Class / Patent application number | Description | Number of patent applications / Date published |
073587000 | Acoustic emission | 81 |
20080202242 | Use of acoustic signals for measuring membrane fouling in spiral wound modules - A spiral wound module assembly comprising: a permeate collection tube, at least one membrane envelope wound about the permeate collection tube, an outer module housing, and at least one acoustic transducer located adjacent to the permeate collection tube. Several embodiments are disclosed including a stand-alone probe adapted for insertion into the permeate collection tube. In several other embodiments, one or more transducers are secured to the inner surface of the permeate collection tube. The invention further includes a method of measuring membrane fouling within a spiral wound module comprising the steps of: a) transmitting an acoustic signal from a location adjacent to the permeate collection tube; b) receiving an echo signal resulting from the transmitted acoustic signal reflecting from an interface within the module; c) providing a reference signal corresponding to a known state of membrane fouling; d) comparing the echo signal to the reference signal; and e) determining a state of membrane fouling based upon the comparison of the echo signal and reference signal. | 08-28-2008 |
20080223136 | Minute structure inspection device, inspection method, and inspection program - There are provided an inspection device, an inspection method, and an inspection program for accurately inspecting a minute structure having a movable portion by using a simple method. A test sound wave is inputted and frequency characteristic of a sensor output voltage amplitude responding to the input of the test sound wave is analyzed. The maximum frequency and the minimum frequency of the device is calculated from estimated use conditions and it is judged whether it is possible to detect a desired characteristic in the frequency band. More specifically, the device is judged to be good or bad depending whether the response characteristic in a predetermined frequency band exceeds the minimum characteristic level as a threshold value. | 09-18-2008 |
20080257047 | MACHINE AND OPERATING ENVIRONMENT DIAGNOSTICS, DETECTION AND PROFILING USING SOUND - A method, system and program storage device are provided for machine diagnostics, detection and profiling using pressure waves, the method including profiling known sources, acquiring pressure wave data, analyzing the acquired pressure wave data, and detecting if the analyzed pressure wave data matches a profiled known source; the system including a processor, a pressure wave transducer in signal communication with the processor, a pressure wave analysis unit in signal communication with the processor, and a source or threat detection unit in signal communication with the processor; and the program storage device including program steps for profiling known sources, acquiring pressure wave data, analyzing the acquired pressure wave data, and detecting if the analyzed pressure wave data matches a profiled known source. | 10-23-2008 |
20080302185 | Microstructure Inspecting Apparatus and Microstructure Inspecting Method - Voltage is applied to a chip TP by a voltage drive unit | 12-11-2008 |
20080302186 | Method for Evaluating Pressure Containers of Composite Materials by Acoustic Emission Testing - The invention relates to a method for evaluating pressure containers made of a composite material by acoustic emission testing. The method comprises the steps:
| 12-11-2008 |
20090049915 | System and method for evaluating concealed termite damage - A method and system for detecting the presence of subterranean termites, involving use of a thermal imaging camera to scan the structure before installation of an acoustic sensor in order to quickly locate potential areas of subterranean termite infestation, and an acoustic sensor in the form of an accelerometer or the disclosed innovative acoustic sensors having a bandwidth of at least 100 Hz to 15 kHz to detect noises made by the subterranean termites. Information collected by the acoustic sensor may be transmitted to a portable mini-computer (pocket PC) for confirmation and to a central operations center for inclusion in a comprehensive database of termite data and information. A method and system for detecting the presence of dry-wood termites concealed in a structure, involving use of a heat source to warm up the wooden structure of interest and then using a thermal imaging camera to scan the structure for suspicious dry-wood infestation, followed by the use of an acoustic sensor and pattern recognition software to more precisely and accurately locate potential area of dry-wood termite infestation. Additionally, structural damage can be evaluated by the methods discussed herein, including live trees | 02-26-2009 |
20090090185 | Method and system for diagnosing mechanical, electromechanical or fluidic components - There is described a diagnosis method and system comprising a sensor for structure-borne noise which emits a measuring signal in a bandwidth-filtered manner due to its mechanical resonant frequency, its capacity and an inductance. The system also comprises an evaluation device in which the measuring signal is subsampled measuring signal exceeds a defined threshold value. The system requires only a small number of electronic components and only little power supply capacity, thereby allowing diagnosis to be carried out without complication in existing devices, especially in field devices of process instrumentation for which only a limited amount of operating power is available. The method and system are especially advantageous for the recognition of valve leakage with an electropneumatic position controller. | 04-09-2009 |
20090090186 | Method and system for diagnosing mechanical, electromechanical or fluidic components - There is described a diagnosis method and a system comprising a structure-born noise sensor which transmits, in a bandpass filtered manner, a measuring signal based on the mechanical resonance frequency and capacity thereof and on an inductance and an evaluating device in which the frequency, at which the measuring signal level exceeds a predetermined threshold value, is defined and which is used for producing an error signal, when the frequency exceeds a second predetermined threshold value. As far as the diagnosis performance requires a small number of electronic components and a low power supply, the diagnostic can be integrated into existing devices, in particular into process instrumentation field devised for which a restricted quantity of operating power is available. The method and the system can be used for identifying a valve leakage with the aid of an electro-pneumatic positional regulator. | 04-09-2009 |
20090095082 | ACOUSTIC SENSING DEVICE, SYSTEM AND METHOD FOR MONITORING EMISSIONS FROM MACHINERY - Acoustic sensing devices, systems and methods are provided for monitoring emissions from machinery. Representative is an acoustic sensing device for transmitting to a measuring instrumentation detection signals indicative of sound wave levels from the machinery. A housing assembly is constructed for removable attachment between a surface mounting region of the machinery and the measuring instrument to define a coupled state. An acoustic emissions (AE) sensor is located in the housing assembly's interior and detects sound waves propagating through the surface mounting region to produce detection signals for processing. A mounting adapter may be employed to interface the housing assembly to the machinery's surface mounting region. | 04-16-2009 |
20090114019 | METHOD FOR IMAGING SURFACE ROUGHNESS USING ACOUSTIC EMISSIONS INDUCED BY ULTRASOUND - A method for measuring variations of the surface of an object using acoustic energy in the audio range is provided. Imaging fine surface roughness on the order of few microns is achievable by using a vibroacoustography technique. This technique provides a method for imaging surface roughness on the basis of an ultrasound radiation force that stimulates acoustic emissions at an ultrasound standing wave field. The present invention may be employed as a tool for the nondestructive inspection and imaging of the surface variations of an object. | 05-07-2009 |
20090217761 | METHOD AND APPARATUS FOR CONDUCTING STRUCTURAL HEALTH MONITORING IN A CRYOGENIC, HIGH VIBRATION ENVIRONMENT - Sensors affixed to various such structures, where the sensors can withstand, remain affixed, and operate while undergoing both cryogenic temperatures and high vibrations. In particular, piezoelectric single crystal transducers are utilized, and these sensors are coupled to the structure via a low temperature, heat cured epoxy. This allows the transducers to monitor the structure while the engine is operating, even despite the harsh operating conditions. Aspects of the invention thus allow for real time monitoring and analysis of structures that operate in conditions that previously did not permit such analysis. A further aspect of the invention relates to use of piezoelectric single crystal transducers. In particular, use of such transducers allows the same elements to be used as both sensors and actuators. | 09-03-2009 |
20090301197 | DEVICE FOR NON-DESTRUCTIVE TESTING OF A STRUCTURE BY VIBRATORY ANALYSIS - A device for non-destructive testing of a structure likely to contain a defect, including means for measuring vibratory waves emitted by the structure at different points of a surface of the structure, the measuring means being integrated in a flexible housing capable of adhering on the surface of the structure to be tested. The disclosed embodiments are applicable to all industrial sectors where testing of the integrity of structures is important, in particular in areonautics. | 12-10-2009 |
20100011862 | Method For Inspecting At Least One Rotor Blade Of A Wind Turbine And Inspection System For At Least One Rotor Blade Of A Wind Turbine - A method for inspecting at least one rotor blade of a wind turbine for damage, such as subsurface blade cracks, includes the steps of: attaching at least one acoustic emission sensor to a surface of a rotor blade to be inspected, exciting oscillations in the rotor blade for a time period, measuring activity signals of the oscillations in the rotor blade with the at least one acoustic emission sensor, and detaching the at least one acoustic emission sensor from the surface of the rotor blade after the inspection. An inspection system for a rotor blade of a wind turbine is also contemplated. | 01-21-2010 |
20100037695 | PHOTOACOUSTIC IMAGING APPARATUS - A photoacoustic imaging apparatus is equipped with: light generating means, for emitting measuring light; light irradiating means, for irradiating the measuring light onto a target; ultrasound detecting means, for detecting ultrasonic waves which are generated in the target portion by the irradiation of the measuring light; and tomographic image obtaining means, for obtaining a tomographic image of the target based on signals of the detected ultrasonic waves. The light generating means includes a pulse laser and light modulating means, which are employed to emit a pulse train having a plurality of pulse beams having pulse widths within a range from 1 nsec to 100 nsec as the measuring light. The tomographic image obtaining means generates processed signals by performing a correlating process between transmission signals of the pulse train and the signals of the ultrasonic waves, and obtains the tomographic image of the target based on the processed signals. | 02-18-2010 |
20100050773 | System and Method for Determining the Operating State of Orthopaedic Admixtures - A system and method for determining the operating state of a curable composition utilizes an acoustic wave or signal transmitted into a container holding the composition. In one embodiment, characteristics of a reflected component of the acoustic signal are measured and correlated to pre-determined values indicative of one or more operating states, or degrees of curing, of the composition. In another embodiment, characteristics of a transmitted component of the acoustic signal are measured and correlated. The characteristics include, for example, the speed of sound through the curable composition or the attenuation of the acoustic signal reflected by or transmitted through the composition. | 03-04-2010 |
20100058867 | ACOUSTIC EMISSION DETECTOR AND CONTROLLER - An AE detector has an AE sensor and a destruction judging section. The destruction judging section judges it as a warning of destruction of a bearing when there are a predetermined number or more of points defined by parameters calculated based on signals from the AE sensor in a predetermined region of a parameter space defined by a plurality of parameters which can be created based on the signals from the AE sensor. | 03-11-2010 |
20100107765 | METHOD AND APPARATUS FOR DETECTING DAMAGE TO HIGH-PRESSURE TANK - There are provided a method and an apparatus for detecting damage to a high-pressure tank, with which a sign of failure of a high-pressure tank containing a high-pressure fluid can be detected early and non-destructively. | 05-06-2010 |
20100139403 | PARAMETER INDEPENDENT DETECTION OF ROTATING MACHINERY FAULTS - A parameter-free method to analyze sensor signals incorporates two or more of frequency demodulation, amplitude demodulation and phase demodulation of the raw signal data. The resulting signal is transformed to a frequency domain, and target fault characteristics from the demodulated signal are identified. The method is used to detect faults in bearings, gears and other mechanical components. | 06-10-2010 |
20100162816 | Process to Monitor Unwanted Formation of a Polymer having Internal Strain by Acoustic Emission Analysis - The present invention relates to a process to monitor unwanted formation of a polymer having internal mechanical strain wherein acoustic emission generated by said polymer formation is detected by one or more acoustic sensors attached to a piece of equipment. | 07-01-2010 |
20100162817 | ULTRASONIC STRESS MEASUREMENT METHOD AND DEVICE - The present invention relates to an ultrasonic stress measurement method of measuring a residual stress of a measuring target layer in a measuring object using an ultrasonic wave, the method comprising, setting a plurality of vibration modes according to a number of degree of freedom of the measuring target layer in the measuring object, performing, for each vibration mode, a measurement operation of emitting an ultrasonic wave corresponding to the set vibration mode to the measuring target layer, receiving the ultrasonic wave reflected by the measuring target layer, and measuring an eigenfrequency of the measuring target layer, and measuring the residual stress of the measuring target layer based on plural measurement data of the eigenfrequency with respect to each vibration mode obtained by the measurement operation. The residual stress of the measuring object thus can be measured at higher accuracy. | 07-01-2010 |
20100206078 | Method for Predicting Failure of Geotechnical Structures - Provided is a method of predicting failure in geotechnical structures using an AE method instead of a conventional displacement or stress measuring method, which belongs to a field of rock mechanics and geotechnical engineering. The method is a measurement technology for identifying signs of failure in geotechnical structures using Acoustic Emission (AE) signals generated by damage in the geotechnical structure and also providing management standard for failure prediction. | 08-19-2010 |
20100269592 | STRUCTURAL INTEGRITY MONITORING SYSTEM - A structural integrity monitoring system includes a structure, at least two vibration monitoring devices mounted to the structure. Each of the at least two vibration monitoring devices outputs a vibration response signal. The structural integrity monitoring system also includes a controller operatively connected to each of the at least two vibration monitoring devices. The controller is configured to calculate a predicted vibration response based upon a vibration mode shape and the vibration response signal. The controller then compares the predicted vibration response against a measured vibration response to detect changes in the structure. | 10-28-2010 |
20100313661 | UNIVERSAL ACOUSTIC EMISSION TEST SENSOR FIXING DEVICE - A universal acoustic emission test sensor fixing device includes a radial positioning mechanism, supporting mechanisms, bases, acoustic emission test sensor mounting mechanisms, and parallelism adjusting members, in which the supporting mechanism includes a main supporting arm and an auxiliary supporting arm, with one end of the auxiliary supporting arm fixedly connected to or hinged with the main supporting arm and the other end being provided with a ball head, and a parallelism adjusting member mounting mechanism is provided at the joint of the main supporting arm and the auxiliary supporting arm, and the base is provided with a spherical hole. | 12-16-2010 |
20100313662 | ACOUSTIC EMISSION TEST SENSOR FIXING DEVICE - An acoustic emission test sensor fixing device, comprising a radial positioning mechanism, supporting mechanisms, bases, acoustic emission test sensor mounting mechanisms, and parallelism adjusting members, wherein the supporting mechanism comprises a main supporting arm and an auxiliary supporting arm, with one end of the auxiliary supporting arm is fixedly connected to or hinged with the main supporting arm and the other end is provided with kink shaft members which are symmetrical about the auxiliary supporting arm; and the bases are provided with plugholes which form revolute pairs with the auxiliary supporting arm. The above components are assembled as follows: the main supporting arms of the two sets of supporting mechanisms are connected to the two free ends of the radial positioning mechanism respectively in the way that the auxiliary supporting arms of the two sets of supporting mechanisms are located at the inner sides of the main supporting arms respectively and are arranged axis symmetrically with respect to the central line of the radial positioning mechanism, and the kink shaft members of the two auxiliary supporting arms are respectively inserted into the plugholes of the two bases to form revolute pairs, the two sets of acoustic emission test sensor mounting mechanisms are respectively mounted at the two bases, and the two sets of parallelism adjusting members are respectively mounted on the two main supporting arms and correspond to the positions of the bases. | 12-16-2010 |
20100326195 | DEVICE AND METHOD FOR QUALITY TESTING SHEET METAL PARTS - A device and a method are provided for quality testing sheet metal parts, particularly deep-drawn parts. The device has a pulse generator ( | 12-30-2010 |
20110138917 | Portable ultrasonic instrument used to distinguish among pig meat and meats of other origin - The technology is based on subjecting the meat sample to an ultrasonic signal, of a specific frequency, and detects its reflected component. The detected signal will be analyzed using a fully developed and commercially available digital signal processing techniques to extracted ultrasonic parameters that can be directly related to elastic properties of the sample under investigation (piece of meat) and hence used to distinguish among the meats in question. | 06-16-2011 |
20110185814 | METHOD FOR NON-DESTRUCTIVE INVESTIGATION OF THE BOTTOM OF METALLIC TANK STRUCTURES - The present invention relates to a method for non-destructive investigation of the bottom of metallic tank structures, comprising the following steps:
| 08-04-2011 |
20110219880 | Method and Arrangement for Determining and Monitoring the State of a Rolling Bearing - An arrangement and method for determining and monitoring the state of a rolling bearing, wherein a first sensor signal is captured in the form of a sound emission signal in a first frequency band in the ultrasonic range during operation of the rolling bearing, a second sensor signal is captured in a second frequency band of lower frequency in the ultrasonic range, a first characteristic value for recently occurred damage is determined from the shape of the first sensor signal, a second characteristic value for recently occurred damage is determined from the shape of the second sensor signal, and the state of the rolling bearing is determined by comparing the first characteristic value to a reference value dependent on the speed of the rolling bearing and dependent on the second characteristic value to at least one second reference value dependent on the speed of the rolling bearing. | 09-15-2011 |
20110239765 | Acoustic Emission Toughness Testing For PDC, PCBN, Or Other Hard Or Superhard Material Inserts - An acoustic emissions testing device includes a testing sample including a hard surface, an acoustic sensor, an indenter coupled to the hard surface, and a load. The load is exerted on the indenter, which transfers the load to the hard surface. The acoustic sensor is communicably coupled to the testing sample and detects one or more acoustic events occurring within the testing sample. An acoustic emissions testing system includes a data recorder coupled to the testing device. The data recorder records the data from testing device. Based upon the data received, the toughness of the sample is objectively determined and can be ranked comparatively to the toughness of other samples. The load is ramped up to a peak load, held for a period of time, and then ramped down. | 10-06-2011 |
20110239766 | PHOTOACOUSTIC IMAGING APPARATUS AND PHOTOACOUSTIC IMAGING METHOD - A photoacoustic imaging apparatus performs imaging of an optical absorber. The photoacoustic imaging apparatus includes a light source, a detector configured to detect an acoustic wave generated from the optical absorber that has absorbed energy of light emitted from the light source, and a signal processing unit configured to form an image of the optical absorber. The signal processing unit stores information indicating whether a rate of change in pressure of the acoustic wave detected by the detector is positive or negative before performing a waveform process on the acoustic wave. | 10-06-2011 |
20110239767 | Acoustic Emission Toughness Testing Having Smaller Noise Ratio - A method, system and apparatus for testing properties of a hard component. The apparatus includes a holder, a component, an indenter, a sensor holder, and an acoustic sensor. The holder includes a first end and a second end opposite the first end. The first end defines a first cavity extending towards the second end. The component is positioned in the first cavity. The indenter is positioned adjacent to a portion of the component and applies a load onto the component. The sensor holder includes an upper portion, a lower portion, and a second cavity therein. The upper portion is coupled to the second end. The sensor is positioned within the second cavity. In some embodiments, the apparatus includes a rod coupled to the lower portion. The rod has a lower acoustic impedance than the sensor holder, thereby allowing sound waves to pass through the sensor holder and not be reflected back into the sensor. | 10-06-2011 |
20110247416 | SENSOR AND TRANSMITTER SYSTEM FOR COMMUNICATION IN PIPELINES - A system for sensing and communicating in a pipeline that contains a fluid. An acoustic signal containing information about a property of the fluid is produced in the pipeline. The signal is transmitted through the pipeline. The signal is received with the information and used by a control. | 10-13-2011 |
20110265569 | Lubrication Condition Monitoring - The present invention relates to a method of determining a lubrication parameter indicative of a lubrication condition of an oil-lubricated rolling element bearing. The method comprises measuring high-frequency structure-borne acoustic emissions generated by asperity contact between rolling contact surfaces of the bearing, to provide a measured signal. The emitted acoustic energy is then extracted from the measured signal and the lubrication parameter is determined from the acoustic energy. The determination is made on the basis of a power-law relation between acoustic energy and the lubrication parameter. | 11-03-2011 |
20110290025 | Ultrasonic Acoustic Emissions to Detect Substrate Fracture - A method of detecting a fracture as it occurs in a component during a manufacturing process includes positioning an acoustic sensor in acoustic communication with the component. A manufacturing process is performed while the acoustic sensor remains in acoustic communication with the component. A signal indicative of acoustic emissions from the component during the manufacturing process is provided to a controller where it is determined whether the component has fractured based on the signal. | 12-01-2011 |
20120006116 | Device, System and Method For Locating a Pipe - A device, system and method of locating a target pipe in a pipe system utilizes an electric signal transmitter and an electrical signal detector. A pipe locator signal conductor comprises a spool and a flexible insulated electrical conductor wound around the spool. The exposed end of the conductor is fixed near an entry point in the pipe system, and the spool is fed into the pipe system such that the conductor pays off of the spool and extends at least partially through the target pipe. The signal transmitter is coupled to the exposed end of the conductor, transmitting a signal through the conductor and allowing the pipe to be located by the signal detector. | 01-12-2012 |
20120006117 | Method and Apparatus for Locating Cable Faults - An electrical pulse fed into an electrical cable, e.g. a power transmission or distribution cable buried underground, produces an acoustic signal, e.g. an arc-over or discharge noise, at a fault in the cable. This acoustic signal is detected and used to locate the fault. But the acoustic signal has interference noise superimposed on it, which makes it difficult to identify the acoustic signal in the noise-burdened received signal, and thus also makes it difficult or impossible to accurately locate the fault. To minimize or avoid the influence of interference noises, the relevant acoustic signal is identified in the received signal by comparing the received signal with predetermined sample data, such as signal patterns, characteristics or characteristic sets. | 01-12-2012 |
20120006118 | ACOUSTIC STRUCTURAL INTEGRITY MONITORING SYSTEM AND METHOD - A method and system is disclosed for detecting structural damage in a structure by detecting acoustic emissions from damage in a structure to obtain acoustic emission data, and processing the acoustic emission data in accordance with a model characterising acoustic paths. | 01-12-2012 |
20120017683 | VIBRATING MICROMECHANICAL SYSTEM HAVING BEAM-SHAPED ELEMENT - An exposed end o a micromechanical system having at least one beam-shaped element is connected to a further element of the micromechanical system at the other end thereof. To optimize the mechanical properties of the micromechanical system, recesses are provided in the beam-shaped element in such a way that the mass of the beam-shaped elements decreases toward the exposed end. | 01-26-2012 |
20120024066 | MICROMECHANICAL SYSTEM AND METHOD FOR BUILDING A MICROMECHANICAL SYSTEM - A micromechanical system with a system that can vibrate, has a seismic mass and at least two spring elements. The spring elements are respectively fastened on one side externally to the seismic mass and on the other side to fixed anchor points of the micromechanical system such that the seismic mass can vibrate in a movement direction. In order to obtain a particularly large frequency spacing between the useful mode and further vibration modes of the system, at least one further spring element is provided in the inner region of the seismic mass. The further spring element the is fastened to a further anchor point of the micromechanical system. A method builds a micromechanical system with a system that can vibrate. | 02-02-2012 |
20120125108 | QUANTITATIVE ACOUSTIC EMISSION NON-DESTRUCTIVE INSPECTION FOR REVEALING, TYPIFYING AND ASSESSING FRACTURE HAZARDS - Inspecting for fracture hazards by detecting a presence of at least one flaw development process in an equipment under inspection, the flaw development process being corrosion product nucleation and development, pitting, plastic deformation development, and/or micro-cracking. Detecting the presence of the flaw development process includes (a) determining at least one characteristic acoustic emission (AE) signature associated with a respective flaw development process, and (b) measuring an AE from each of a plurality of locations within the equipment. Presence of the respective flaw development process is identified only when the measured AE conforms to the characteristic AE signature within a predetermined tolerance. A fracture hazard is determined to exist only when (a) a quantity of the identified flaw development processes exceeds a first predetermined threshold and/or (b) a magnitude of at least one of the identified flaw development processes exceeds a second predetermined threshold. | 05-24-2012 |
20120260734 | MULTIPURPOSE SENSOR FIXING DEVICE - A multipurpose sensor fixing device includes a radial positioning mechanism, a supporting mechanism, a base, a mounting mechanism, and a parallelism adjusting member. The supporting mechanism comprises a main supporting arm and an auxiliary supporting arm, with one end of the auxiliary supporting arm connected to the main supporting arm and the other end comprising kink shaft members. The main supporting arm is connected to an end of the radial positioning mechanism to locate the auxiliary supporting arm at the inner side of the main supporting arm. The kink shaft member of the auxiliary supporting arm is inserted into a plughole of the base to form a revolute pair with the auxiliary supporting arm. The mounting mechanism is mounted at the base. The parallelism adjusting member is mounted on the main supporting arm. | 10-18-2012 |
20120304771 | Inspection Apparatus and Inspection Method for Lithium Ion Secondary Battery, and Secondary Battery Module - The present invention provides an inspection method for a lithium ion secondary battery in which an electrolyte and an electrode group are disposed in one container, the electrode group including a positive electrode, a negative electrode, and a separator, wherein a sensor for detecting acoustic emission is attached to the outside of the container and acoustic emission generated in the battery container is detected upon provision of charge or discharge current and stopping of provision thereof between the positive electrode and the negative electrode. Specifically, the amplitude intensity of the acoustic emission is measured that is generated upon provision of charge-discharge currents having different values, linear approximation is conducted for the charge-discharge current value and the amplitude intensity of the acoustic emission, and the number of times of charge-discharge cycles that has been provided so far to the battery is estimated. | 12-06-2012 |
20130008252 | DETECTION OF CRACKS ON METAL BELLOWS OF VALVES - The present disclosure relates to a method for detecting a damage or contamination of a valve bellows, comprising the steps of: causing the valve bellows to oscillate, sensing the oscillations with a sensor and outputting a sensor signal generated by the oscillations, and comparing at least one sensor signal value with at least one reference value. The disclosure further relates to an apparatus comprising a valve with a valve bellows, a sensor for sensing oscillations of the valve bellows and for outputting a sensor signal generated by the oscillations, and a comparator circuit, such as a microprocessor, for comparing at least one sensor signal value with at least one reference value. | 01-10-2013 |
20130008253 | FBG VIBRATION DETECTION SYSTEM, APPARATUS AND VIBRATION DETECTION METHOD USING THE SYSTEM - A vibration detection apparatus for, for example, ultrasound/AE, with Fiber Bragg Grating (FBG), is used for elastic wave detection generated by a material impact and ultrasonic defect detection. Disadvantageously, the apparatus cannot detect ultrasound and has degraded performance at variable temperatures and strains. In response, a highly sensitive, small and light vibration detection apparatus is provided. FBG reflection light is lased by using a fiber laser. The intensity of the lased reflection light from the FBG is converted into an electrical signal. Thus, the ultrasound vibration or the like is detected. A vibration detection system includes an optical amplifier | 01-10-2013 |
20130019683 | Control Valve Monitoring System - A control valve monitoring system is disclosed. The control valve monitoring system includes at least one sensor connected to one of a valve stem or valve shaft, and the at least one sensor detects a change in mechanical integrity of one of the valve stem or valve shaft. A device for providing data regarding the change in mechanical integrity of one of the valve stem or valve shaft is provided, allowing maintenance of the valve shaft or valve stem to be conducted in an efficient manner. | 01-24-2013 |
20130091950 | METHOD AND SYSTEM FOR DIAGNOSIS OF THE INTERNAL STATE OF A BATTERY THROUGH ACOUSTIC EMISSION - The invention relates to a method of estimating the internal state of a first electrochemical system for electric power storage, such as a battery, wherein at last one property relative to the internal state of the first electrochemical system is estimated from acoustic emission measurements. | 04-18-2013 |
20130111994 | SYSTEM AND METHOD FOR STRAIN AND ACOUSTIC EMISSION MONITORING - A device is provided for monitoring strain and acoustic emission in an object. The device includes: a strain measurement portion operable to measure strain; an adhesive layer disposed on the strain measurement portion; and a peel-off mask disposed on the adhesive layer. In an example embodiment, the strain measurement portion includes a body, a transparent window portion, a strain measurement device and a signal processing portion. The body includes an attachment surface, wherein the adhesive layer is disposed on the attachment surface for attachment of the body to the object. The transparent window portion is arranged to enable viewing of a portion of the object through the body. The strain measurement device is disposed within the transparent window portion and is operable to generate a strain signal based on strain in the object. The signal processing portion is operable to generate a processed signal based on the strain signal. | 05-09-2013 |
20130145848 | PROBING SYSTEM FOR MEASUREMENT OF MICRO-SCALE OBJECTS - An apparatus for measuring dimensions of a micro-scale object includes a movable stylus, a probe and at least one acoustic emissions sensor. The movable stylus is positionable to contact an object to be measured. The probe is rotatably coupled to the stylus and has a distal end that circumscribes a circle when rotated. The acoustic emissions sensor is operatively coupled to the probe. The sensor is operative to detect acoustic emissions generated from contact between the distal end of the probe and the object, thereby allowing dimensions of the object to be determined. | 06-13-2013 |
20130167644 | DEVICE FOR INSPECTING A MOVING METAL STRIP - A device for inspecting a moving metal strip includes a first electromagnetic acoustic transducer having an ultrasonic wave emitter. The waves emitted from the emitter are emitted to be incident on a first edge of a surface of the strip, and the emitter is not in contact with the strip. A second electromagnetic acoustic transducer is provided and includes an ultrasonic wave receiver. The waves received emerging from an area of the strip surface toward the receiver, the receiver is not in contact with the strip. A processing unit is coupled to the second electromagnetic acoustic transducer to provide an inspection criterion using a signature of the ultrasonic waves measured. The area is located on the strip such that a wave path between the first edge of the strip and the area is aligned in a linear direction mainly transverse to the direction of movement of the strip. | 07-04-2013 |
20130283916 | SELF-TESTING FUNCTIONAL CHARACTERISTICS OF ULTRASONIC SENSORS - Functional characteristics of an ultrasonic element are self-tested by, in various embodiments, causing the ultrasonic element to emit an ultrasonic signal; detecting the emitted ultrasonic signal substantially simultaneously with its emission; and verifying proper operation of the ultrasonic element based on comparison between a detected ultrasonic signal parameter and a reference parameter. | 10-31-2013 |
20130298677 | DEVICE FOR PREDICTION UNDERGROUND BEHAVIOR BY USING ACOUSTIC EMISSION SENSOR AND PRODUCING METHOD THEREOF - Provided is a device for predicting an underground behavior by using an acoustic emission (AE) sensor, including: a waveguide rod having an elongated end to be inserted in a borehole; a plurality of acoustic emission sensors mounted on different positions of the waveguide rod; a wrapping layer configured to cover a circumferential surface of the waveguide rod such that a gap is formed between the waveguide rod and the wrapping layer; an acoustic emission generating layer filled into the gap and being homogeneous along a direction of the waveguide rod; and a grouting layer configured to fix the waveguide rod in the borehole. | 11-14-2013 |
20130298678 | Process to Monitor Unwanted Formation of a Polymer having Internal Strain by Acoustic Emission Analysis - A process to monitor unwanted formation of a polymer having internal mechanical strain is disclosed. The acoustic emission generated by polymer formation is detected by one or more acoustic sensors attached to a piece of equipment. | 11-14-2013 |
20140026665 | Acoustic Sensor II - At least one exemplary embodiment is directed to an acoustic sensor that can be used to identify various fluids as well as concentrations of compounds dissolved in liquids. | 01-30-2014 |
20140033820 | STRENGTH PROOF TEST METHOD AND DEVICE TO BE USED THEREIN - The present invention is intended for improving the reliability of a strength proof test method for ceramic parts. The present invention is directed to a strength proof test method for making total inspection of ceramic parts, including: applying a prescribed load to the ceramic parts; and at the same time, making an acoustic emission measurement, in which the ceramic parts are considered as passing when the ceramic parts are not fractured in the test and the variation of acoustic emission energy is not more than a threshold. | 02-06-2014 |
20140076052 | TESTING FOR DEFECTIVE MANUFACTURING OF MICROPHONES AND ULTRALOW PRESSURE SENSORS - A method of testing a MEMS pressure sensor device such as, for example, a MEMS microphone package. The MEMS pressure sensor device includes a pressure sensor positioned within a housing and a pressure input port to direct acoustic pressure from outside the housing towards the pressure sensor. An acoustic pressure source is activated and acoustic pressure from the acoustic pressure source is directed to the pressure input port and to an exterior location of the housing other than the pressure input port. Based on the output signal of the pressure sensor, it is determined whether any defects exist that allow acoustic pressure to reach the pressure sensor through the exterior of the housing at locations other than the pressure input port. | 03-20-2014 |
20140090472 | DEVICE AND METHOD FOR EVALUATION OF VIBRATIONS - A device for the evaluation of vibrations ( | 04-03-2014 |
20140116141 | METHOD FOR DETECTING DEFECTS IN TREATING IRON COMPONENTS - A method of testing a treating iron component for the presence of a defect in structural integrity is presented. The treating iron component is subjected to test conditions of hydrostatic pressure. Test acoustic emission from the treating iron component while under the test conditions can be detected by at least one acoustic sensor and compared to standard acoustic emission detected by subjecting a similar non-defective treating iron component to the same test conditions of hydrostatic pressure. An increase in the test acoustic emission compared to the standard acoustic emission indicates the presence of a defect in the structural integrity of the treating iron component. | 05-01-2014 |
20140123758 | FURNACE STRUCTURAL INTEGRITY MONITORING SYSTEMS AND METHODS - Various systems and method for acoustic monitoring of smelting furnaces and similar devices are disclosed. Acoustic sensors (and optionally other sensors) are mounted to the furnace. Acoustic emission events generated in the furnace are analyzed to identify conditions that exceed one or more thresholds. The location of acoustic emissions may be identified and reported. Output signals may be generated in response to acoustic emissions. The location of acoustic emissions may be used to identify the location of potential failures in the furnace. | 05-08-2014 |
20140165729 | ACOUSTIC EMISSION DIAGNOSIS DEVICE FOR GAS VESSEL USING PROBABILISTIC NEURAL NETWORK AND METHOD OF DIAGNOSING DEFECT OF CYLINDER USING THE SAME - An acoustic emission diagnosis device is provided for a gas vessel using a probabilistic neural network, and a method of diagnosing a defect of the gas vessel using the same, in which acoustic emission signal sensors are attached to multiple portions of the gas vessel. Acoustic emission signals are detected when filling the inside of the gas vessel with gas, when holding the pressure after filling, and when decreasing the pressure. Features in which the detected acoustic emission signals are varied are extracted, and a damaged degree of the gas vessel is determined using the probabilistic neural network that has been trained through a classification learning algorithm for the extracted features. | 06-19-2014 |
20140174186 | SYSTEM METHOD AND DEVICE FOR LEAK DETECTION AND LOCALIZATION IN A PIPE NETWORK - The invention provides a system for leak detection of a fluid in a pipe network. The system includes flow meters, and vibration detectors adapted to be attached to a pipe at a location in the pipe network. A processor analyzes signals generated by the flow meters and vibration detectors to identify the presence of one or more leaks in the pipe network. The invention also provides a method for detecting and localizing leaks in a pipeline network, and a device comprising a flow meter integral with a vibration detector for use in the system of the invention. | 06-26-2014 |
20140182381 | Gate Valve Real Time Health Monitoring System, Apparatus, Program Code and Related Methods - Systems, apparatus, and program code, and methods for monitoring the health and other conditions of the valve, are provided. An exemplary system for monitoring the condition of the gate valve includes a logic module configured to perform the operations of receiving sensor data providing an acoustic emission, vibration, and/or stream level signature and determining the level of lubricity, level of friction, level of surface degradation, and leakage rate at a gate-valve seat interface. An exemplary method for monitoring the condition of the gate valve includes receiving sensor data providing an acoustic emission, vibration, and/or stream level signature and determining the level of lubricity, level of friction, level of surface degradation, and leakage rate at a gate-valve seat interface. | 07-03-2014 |
20140190263 | ACOUSTIC FLUID VALVE CALIBRATION - Methods and apparatus for acoustic fluid valve calibration are disclosed herein. An example method involves rotating a closure member of a valve to a involves rotating a closure member of a valve to a plurality of positions along a valve stroke, obtaining acoustic emission signals generated by a fluid passing through the valve using a sensor when the closure member is in the positions, and identifying, using a processor, a zero position of the closure member based on the acoustic emission signals. | 07-10-2014 |
20140208850 | APPARATUS AND METHOD OF DETECTING A DEFECT OF A SEMICONDUCTOR DEVICE - A semiconductor device defect detecting apparatus including: a sensor disposed on semiconductor process equipment, the sensor configured to detect a signal emitted from a semiconductor device in contact with the semiconductor process equipment; and a signal analyzer configured to determine whether the semiconductor device is defective based on the detected signal in a predetermined frequency range. | 07-31-2014 |
20140260624 | ACOUSTICALLY-MONITORED SEMICONDUCTOR SUBSTRATE PROCESSING SYSTEMS AND METHODS - A semiconductor substrate processing system having acoustic monitoring is disclosed. The system includes a process chamber adapted to perform a process on a substrate, a process fluid source, a fluid conduit coupling the fluid source to the process chamber, and a flow control valve located along the fluid conduit and adapted to be operable to control a flow of a process fluid between the process fluid source and the process chamber. The system includes one or more acoustic sensors operable to sense acoustic noise coupled to at least one of the process fluid source, the fluid conduit, and the flow control valve, and an acoustic processor adapted to receive at least one signal from the one or more acoustic sensors. Acoustic monitoring methods are provided, as are other aspects. | 09-18-2014 |
20140283608 | DEVICE AND METHOD FOR TESTING A VEHICLE - A device for testing a vehicle includes at least one sound recording device, which is designed for recording the sound emitted by a vehicle to be tested, and an evaluation device, which is designed for evaluating the sound recorded by the at least one sound recording device. The device may include at least one image recording device, which is designed for recording at least one image of the vehicle to be tested, and a display device which is designed for representing the source(s) of the recorded sound in at least one image of the vehicle to be tested. | 09-25-2014 |
20140283609 | Systems and Methods For Determining Geologic Properties Using Acoustic Analysis - Systems and methods which determine geologic properties using acoustic analysis are shown. Acoustic signals are collected during processing (e.g., crushing, shearing, striking, compressing, etc.) of geologic media, such as rock samples, for determining geologic properties according to embodiments. The acoustic signals collected may include frequency information, amplitude information, time information, etc. which may be utilized in determining geologic properties, such as geologic media properties (e.g., mineralogy, porosity, permeability, sealing capacity, fracability, compressive strength, compressibility, Poisson's Ratio, Youngs Modulus, Bulk Modulus, Shear Modulus), geologic structure properties (e.g., lithology, seal quality, reservoir quality), geologic acoustic properties (e.g., acoustic logging effectiveness, acoustic response, natural or harmonic frequencies, etc.). Embodiments may be used to provide determination of geologic properties from a variety of geologic media samples, such as cuttings, core samples, etc. | 09-25-2014 |
20140352435 | ACOUSTIC TRANSDUCER ASSEMBLY FOR A PRESSURE VESSEL - A transducer assembly includes an acoustic sensor element and an acoustic waveguide. The acoustic waveguide includes a rotatable acoustic coupler, a tube, and a foot. The foot has a mounting surface that is mountable on a fluid conduit. A circuit assembly couples to acoustic sensor element and provides a diagnostic output. | 12-04-2014 |
20150082887 | SENSOR ELEMENT WITH AN ACOUSTIC EMISSION SENSOR - A sensor element includes an acoustic emission sensor for detecting acoustic emission. The sensor element has a second sensor for a second measured variable which is different from acoustic emission. Furthermore, a sensor element is provided, which includes an acoustic emission sensor for detecting acoustic emission and includes an interface for receiving an external sensor signal. | 03-26-2015 |
20150082888 | ACOUSTIC SENSOR AND ACOUSTIC SENSOR SYSTEM - According to one embodiment, an acoustic sensor includes a base and a first strain sensing element. The base includes a support and a first film unit supported by the support. The first film unit is flexible. The first strain sensing element is provided on a first surface of the first film unit. The first strain sensing element includes a first magnetic layer, a second magnetic layer, and a first intermediate layer provided between the first magnetic layer and the second magnetic layer. An angle between a magnetization of the first magnetic layer and a magnetization of the second magnetic layer is variable by an acoustic wave. The acoustic wave is transmitted to a first film unit by a first transmitting material in contact with the first film unit. | 03-26-2015 |
20150143909 | APPARATUS FOR NONDESTRUCTIVE CRACK INSPECTION - According to the present invention, it is possible to determine a defect on a product caused in a press process by applying a predetermined acoustic signal to an object to be inspected and then sensing propagation of the applied signal, and it is possible to improve inspection performance, using an acoustic sensor capable of sensing sounds in an audible band and a high-frequency sensor capable of sensing sounds in an non-audible band. | 05-28-2015 |
20150330950 | STRUCTURAL FATIGUE CRACK MONITORING SYSTEM AND METHOD - A monitoring system of the present disclosure reduces the sampling and processing requirements for on-line/in-flight monitoring of structural components and thus facilitates detection of high cycle/low amplitude fatigue damage. Moreover, the monitoring system can develop a physical failure model based on information received from monitoring sensors that can be used to determine the remaining useful life (RUL) of structural components. In an exemplary embodiment, the incorporation of low cost, light weight, bused sensors would facilitate in-flight load tracking and detection of high cycle/low amplitude fatigue damage. In this embodiment, a model based on the physical degradation process of the material under analysis (e.g., a physical failure model based on cumulative damage estimation, i.e., based on an AE events count) can be generated using measurable and quantifiable parameters from these sensors and accordingly the RUL of structural components can be determined. | 11-19-2015 |
20150338306 | PIEZOELECTRIC SENSOR CONFIGURATION FOR DETECTING DAMAGE IN A STRUCTURE - Described herein is an apparatus for detecting damage in a structure that includes a plurality of first piezoelectric sensing elements arranged in a generally circular shape. The apparatus also includes an annular-shaped second piezoelectric sensing element positioned adjacent the plurality of first piezoelectric sensing elements. One of the plurality of first piezoelectric sensing elements or the annular-shaped second piezoelectric sensing element generates a wave through the structure and other of the plurality of first piezoelectric sensing elements or the annular-shaped second piezoelectric sensing element senses the wave after passing through the structure. | 11-26-2015 |
20150338380 | Assessing Corrosion Damage in Post-Tensioned Concrete Structures Using Acoustic Emission - Methods are provided for detecting damage in a post-tensioned concrete specimen due to corrosion. In one embodiment, the method comprises mounting at least two piezoelectric sensors onto the surface of the post-tensioned concrete specimen; receiving acoustic emission signals at the piezoelectric sensors; recording the acoustic emission signals with associated parameters and waveforms; and filtering the data for example using Root Mean Square data and the average frequency data. | 11-26-2015 |
20150354690 | SYSTEM AND METHOD FOR MONITORING PRELOAD IN BALL SCREW - A system for the monitoring a preload in a ball screw includes a ball screw, a detecting device, a capturing device and a processing device. The ball screw has a preload. The detecting device detects an operating signal of the ball screw. The operating signal contains information about the ball screw's rotating speed and status. The status refers to a vibration or a sound generated by the operating ball screw. The capturing device is connected to the detecting device and acquires the operating signal. The processing device is connected to the capturing device, and has a threshold. The processing device processes and converts the operating signal into a ball-passing signal. When the ball-passing signal surpasses the threshold, the processing device determines that the ball screw's preload has vanished. Thereby, the system is enabled to determine the current state of the ball screw's preload reliably. | 12-10-2015 |
20160047717 | METHOD, COMPUTER PROGRAM PRODUCT & SYSTEM - A method for processing data obtained from a condition monitoring system, the method including steps of (a) obtaining an Acoustic Emission time waveform from at least one sensor and (b) digitally demodulating the Acoustic Emission time waveform. | 02-18-2016 |
20160084803 | DETECTION SYSTEM AND DETECTION METHOD - According to an embodiment, a detection system includes a plurality of sensor nodes and a sensor module. The plurality of sensor nodes detects sound waves generated from a prestressed concrete and converts the detected sound waves into detection signals. The sensor module is connected to the plurality of sensor nodes and receives the detection signals. The plurality of sensor nodes includes the sensor nodes in an operating state and the sensor nodes in a dormant state in which power consumption is held down as compared to the operating state. When magnitude of the detection signals is equal to or greater than a first threshold value, the sensor module switches the sensor node in the dormant state to the operating state. | 03-24-2016 |
20160097745 | APPARATUS AND METHOD FOR DETECTING DEFECT OF PRESS PANEL - An apparatus for detecting a defect of a press panel includes: an acoustic emission sensor unit configured to detect at least one elastic wave signal emitted from the press panel as a detection target during press work, a period measurer configured to measure a period as a section in which there are consecutive signals with a greater voltage than a threshold voltage among the at least one detected signals, and a defect existence determination unit configured to determine that a defect is generated in the press panel when the measured period is greater than a first reference value, and to determine that the press panel is in a normal state when the measured period is smaller than a second reference value which is smaller than the first reference value. | 04-07-2016 |
20160109329 | METHOD, COMPUTER PROGRAM PRODUCT & SYSTEM - A method for processing data obtained from a condition monitoring system, the method comprising steps of: (a) obtaining dynamic Acoustic Emission signal data in the form of a time waveform from at least one sensor, (b) extracting one of a maximum value, a minimum value, or mean value of the time waveform (c) counts of crossing predetermined threshold values, and (d) one of transmitting, displaying, or storing the extracted values and the number of counts instead of the dynamic signal time waveform data. | 04-21-2016 |
20160139084 | SIGNAL PROCESSING APPARATUS, SERVER, DETECTION SYSTEM, AND SIGNAL PROCESSING METHOD - According to an embodiment, a signal processing apparatus includes a receiver, a time information generator, a processor, and a communicator. The receiver receives a voltage signal from a sensor that detects an elastic wave generated from a structure. The time information generator generates time information having a bit length based on a measurement continuing time period of the structure, a propagation velocity of the elastic wave, and a position identification accuracy of a generation source of the elastic wave. The processor generates detection information in which feature amount information that indicates a feature of the voltage signal and the time information that indicates a reception time of the voltage signal are in association with each other. The communicator transmits the detection information to a server. | 05-19-2016 |
20160146763 | SAFT Analysis Of Defects Close To The Surface - A method and device for the ultrasonic testing of test objects by means of a test head. A computer device directly acquires, during a SAFT analysis for determining points in time of the amplitudes to be summed up from among the image time signals, a propagation time, which depends on the test head, from the test head positioned at a measuring point to the location of each of a plurality of voxels and uses the propagation time for calculating an amplitude total for the plurality of voxels. | 05-26-2016 |
20190145937 | SYSTEM AND METHOD FOR INSPECTING A STRUCTURE WITH CODA ACOUSTIC WAVES | 05-16-2019 |