| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 073806000 | Varied according to predetermined pattern | 23 |
| 073807000 | Applied directly by fluid pressure | 2 |
| 20110167921 | METHOD OF DETERMINING FATIGUE OF PRESSURE-RESISTANT COMPONENT FOR HIGH-PRESSURE HYDROGEN - A method of determining fatigue of a pressure-resistant component for high-pressure hydrogen made of a ferritic steel and provided in a high-pressure hydrogen gas environment is provided wherein when the material of the ferritic steel in the air has an ultimate tensile strength Su in the range of 958-1,144 MPa and the hydrogen gas environment has a pressure in a range to 45 MPa, then a fatigue strength in a gaseous hydrogen S | 07-14-2011 |
| 20120055258 | Apparatus and Method for Fatigue Testing of a Material Specimen in a High-Pressure Fluid Environment - Provided are several examples of apparatuses and methods for applying loads to material specimens in pressurized fluid environments. The apparatuses use the fluid pressure as the force for applying the loads to the specimens. | 03-08-2012 |
| 073808000 | Repetitive | 21 |
| 20080257057 | Device for fatigue testing an implantable medical device - A device for fatigue testing an implantable medical device having a compression assembly and a first bending assembly. The compression assembly supports first and second portions of the implantable medical device so as to apply a compression force to the implantable medical device along a compression axis and at a compression angle. The first bending assembly is configured to apply a first bending force onto the implantable medical device to move the first portion of the implantable medical device about a first bending axis with respect to the second portion of the implantable medical device. The first bending assembly is coupled with the compression assembly such that the compression angle remains substantially constant regardless of the position of the first portion of the implantable medical device with respect to the second portion of the implantable medical device. | 10-23-2008 |
| 20090120200 | SELF-POWERED SENSOR - A self-powered sensor is provided for strain-rate monitoring and other low power requirement applications. The self-powered sensor is comprised of: a piezoelectric transducer; a non-volatile memory comprised of at least one floating gate transistor; a current reference circuit adapted to receive a voltage signal from the piezoelectric transducer and operable to output a reference current into the non-volatile memory; an impact-monitoring circuit having a triggering circuit and a switch; the triggering circuit adapted to receive the voltage signal from the piezoelectric transducer and operable to control the switch based on the rate of change of the voltage signal. | 05-14-2009 |
| 20090314099 | APPARATUS AND SYSTEM FOR CYCLIC TESTING - A system is disclosed for testing components comprising a loading system capable of applying and reducing mechanical loads on a test specimen, the loading system comprising a fluidic mechanical muscle coupled to a lever arm, the fluidic mechanical muscle having a sheath and a bladder disposed within the sheath and a control system that controls the operation of the fluidic mechanical muscle. An apparatus is disclosed comprising a frame, a lever arm associated with the frame, a fluidic mechanical muscle coupled to the lever arm, the fluidic mechanical muscle having a sheath and a bladder disposed within the sheath; and a control system that controls the operation of the fluidic mechanical muscle. | 12-24-2009 |
| 20110167922 | TRANSVERSE LOAD APPARATUS - A loading device is provided, including a first member, a second member, a first clamping member, a second clamping member, and an actuator. The first member includes a first surface, where the first surface contacts a first side of a test piece. The second member includes a second surface, for contacting a second side of the test piece. The first clamping member includes a first clamping surface for contacting the second side of the test piece. The second clamping member is fixedly secured to the second member. The actuator exerts a predetermined force driving the second member in a first direction away from the first member, and a second direction towards the first member. | 07-14-2011 |
| 20110247428 | TESTING DEVICE - A testing device suitable for testing an electronic device is provided. The electronic device has a first body and a second body, wherein the first body is suitable for rotating relative to the second body. The testing device includes a carrying platform, a fixed frame, a clamping element, a first driving element, and a second driving element. The carrying platform carries the first body. The fixed frame is pivoted to the carrying platform. The clamping element is pivoted to the fixed frame for clamping the second body. The first driving element is disposed between the carrying platform and the fixed frame for driving the fixed frame to pivot relative to the carrying platform. The second driving element is disposed between the clamping element and the fixed frame for driving the clamping element to pivot relative to the fixed frame. | 10-13-2011 |
| 20110259116 | Method of determining material dependent constants of a metal object on fatigue testing - A method of determining material constants of a hardened metal object being exerted to load cycles, and a method of indicating fatigue damage rate of a hardened metal object in relation to load cycles, N, exerted on the hardened metal object, wherein material dependent constants of the hardened metal object are determined according to the method of determining material dependent constants of the hardened metal object. Methods for indicating fatigue and predicting life of a metal object are disclosed. | 10-27-2011 |
| 20120240687 | DEVICE FOR FATIGUE TESTING A SPECIMEN - Apparatus for fatigue or mechanical friction damping measurement testing a specimen the apparatus including a body having opposing arms defining between them a space for receiving the specimen, one of the opposing arms having a fixture for securing the specimen, another of the opposing arms having a further fixture for securing the specimen, the fixture and the further fixture being adjustable to increase or decrease the relative distance therebetween, wherein the body includes an assigned vibration location to which excitation signals are applied during testing. | 09-27-2012 |
| 20130081476 | FATIGUE TEST ARRANGEMENT - High cycle fatigue testing is required with regard to a large number of components in order to evaluate their performance and capabilities. Typically such components are mounted such that an excitation mechanism such as through use of air jets can be utilised in order to stimulate vibration. In order to isolate a desired vibration mode generally, an isolation device is utilised. The isolation device presents an edge to a node within the component in order to inhibit vibration modes other than that of interest. Unfortunately, prior isolation elements tend to wear resulting in spurious results. By providing an isolation element within an isolation device, a fatigue test arrangement can be achieved in which both axial movement in the direction of a spring upon which the element is presented as well as lateral movement can be achieved. | 04-04-2013 |
| 20130220023 | TESTING DEVICE AND TESTING SYSTEM FOR TESTING RELIABILITY OF INTERFACE EMPLOYED BY ELECTRONIC DEVICE - An exemplary testing device includes a shell, a motor, a wheel rotating eccentrically, a testing plug, and a sliding assembly. The sliding assembly is configured to move back and forth along a first direction in a first accommodating space of the shell. A periphery of the wheel abuts against two opposite sides of the sliding assembly. An eccentricity e defined between a eccentric hole of the wheel and the center of the wheel causes the sliding assembly to move back and forth along the first direction when the wheel rotates eccentrically. The testing plug connects to the sliding assembly and moves back and forth in unison with the sliding assembly, such that the testing plug can be inserted into the interface of the electronic device more than once. | 08-29-2013 |
| 20160116387 | TEST BENCH COMBINING HIGH-FREQUENCY TRIBOLOGICAL STRESS AND OLIGOCYCLIC FATIGUE - Test rig combining high-frequency tribological stress and low-cycle fatigue, comprising a first test piece which is fixed to a frame and defines at least one bearing surface, a second test piece which is connected to traction means for loading the second test piece so that it bears against the or each bearing surface of the first test piece, means for heating the test pieces and means for loading the test pieces in a vibratory manner so as to carry out a fretting fatigue and low-cycle and high-cycle fatigue test, one of the test pieces comprising a portion which is in the shape of a turbine engine rotor blade root and which is inserted in a groove, the shape of which groove is substantially complementary to the other test piece so as to reproduce a turbine engine blade-disc attachment. | 04-28-2016 |
| 073810000 | To failure | 2 |
| 20100064819 | METHOD OF FORECASTING THE LIFETIME OF STRUCTURAL PARTS - A method is provided for determining the extent of cyclic stress fatigue suffered by a component comprising the steps of: (i) obtaining a gauge material which undergoes a continued progressive/cumulative and quantifiable change in at least one of its physical properties in response to repeated strain cycles applied to the gauge material, the quantifiable change being indicative of both degree of strain and number of cycles incurred during the repeated strain cycles; (ii) determining a correlation between an extent of the quantifiable change in the gauge material and an effect on said component of a corresponding number and degree of strain cycles; (iii) affixing the gauge material to said component to subject the gauge material to any strain encountered by an adjacent portion of the component; (iv) at least periodically determining the extent of said quantifiable change to the gauge material to determine the extent of cyclic stress fatigue undergone by the component. | 03-18-2010 |
| 20120060621 | WIRELESS ENABLED FATIGUE SENSOR FOR STRUCTURAL HEALTH MONITORING - A fatigue sensor for monitoring the health state of structural members is disclosed. The sensor has multiple parallel beams, each sensitive to different levels of fatigue, that are designed to fail prematurely but progressively as the sensor goes through the same fatigue cycles as the structural member it is attached to. Whenever fatigue levels on a particular beam of the sensor exceed the engineered number of fatigue cycles, that particular beam fails and sensor electronics can detect that failure and transmit this information wirelessly when interrogated by an external interrogator. Having multiple beams that fail after different numbers of fatigue cycles enables the health state of the structural member to be monitored, in that unlike normal fracture sensor that sense failure of the structural members after the actual fracture event, the present invention is capable of sensing imminent failure of the structural member before the actual failure occurs. | 03-15-2012 |
| 073811000 | Electric control circuit or particular loading device | 1 |
| 20090314100 | SYSTEM AND METHOD FOR CYCLIC TESTING - A control system is disclosed for controlling a mechanical test comprising a flow control valve that controls a fluidic mechanical muscle having a sheath and a bladder disposed within the sheath, and a servo-controller that controls the operation of the flow control valve based on an output signal from a master controller based on an input signal corresponding to a desired test profile. A method of controlling a component test is disclosed comprising the steps of programming a test profile in a logic controller, supplying a signal to a master controller, supplying a signal from the master controller to a servo-controller, and controlling the flow of a fluid into a fluidic mechanical muscle having a sheath and a bladder disposed within the sheath for applying and reducing mechanical loads on a test specimen. | 12-24-2009 |
| 073812000 | Flexing, bending, or folding | 5 |
| 20100024565 | METHOD OF CONSIDERING THE DYNAMIC BEHAVIOR OF A MOVABLE MEMBER OF A MACHINE FOR PERFORMING A WHEEL FATIGUE TEST - A method of considering the dynamic behaviour of a movable member of a machine for performing a wheel fatigue test, the wheel including a disc and a rim, the method including mounting the wheel by fixing the wheel rim relative to a fixed structure of the machine, and securing the disc relative to the movable member which is movable to transmit a cyclical bending moment to the wheel, exerting a cyclical force on the movable member to generate the bending moment, at a distant position from the wheel, and while exerting the cyclical force, determining an indication of bending moment in the movable member at a first position between the wheel and the distant position, determining an indication of bending moment in the movable member at a second position between the first position and the distant position, and using the indications of bending moment at both of the first and second positions to determine an actual bending moment applied to the wheel. | 02-04-2010 |
| 20110239774 | FATIGUE TESTING A SAMPLE BY CYCLICAL APPLICATION OF UNIDIRECTIONAL STRESS - A sample having a known mass and stiffness is rigidly secured to an axially elongated beam having a mass and a stiffness that are very large as compared to the mass and stiffness of the sample. The beam is then caused to resonate in the free-free mode. This subjects the sample to cyclical unidirectional stress. Advantageously, resonance of the beam occurs at an audio frequency, permitting severe fatigue tests requiring tens of millions of cycles to be completed in a relatively short time. | 10-06-2011 |
| 20130205911 | REVERSAL BENDING FATIGUE TESTING - Embodiments for apparatuses for testing reversal bending fatigue in an elongated beam are disclosed. Embodiments are configured to be coupled to first and second end portions of the beam and to apply a bending moment to the beam and create a pure bending condition in an intermediate portion of the beam. Embodiments are further configured to cyclically alternate the direction of the bending moment applied to the beam such that the intermediate portion of the beam cyclically bends in opposite directions in a pure bending condition. | 08-15-2013 |
| 20140109682 | Rope Test Stand - A cable test bench for testing a test cable to establish service life, replacement age, number of flex cycles, and/or winding behavior, has a deflection system including at least one deflector roll to deflect the test cable, one test cable drive to wind and unwind the test cable via the deflection system, and one test load to load the test cable. The cable test stand has an additional cable test drive for winding and unwinding a safety cable and/or the named test cable, and a control device for controlling the additional cable drive and/or the test cable drive in a manner wherein the two are adjusted to each other, in such a manner that the load of the test cable can be adjusted differently for different test cable segments and/or different winding directions and/or different winding cycles and/or different phases of a winding cycle. | 04-24-2014 |
| 20140190268 | METHOD FOR DETERMINING THE FATIGUE CAPITAL OF A CABLE - The invention relates to a method for determining the fatigue capital of a cable supporting a civil engineering structure, the method including: a measuring step (S | 07-10-2014 |
| 073813000 | Compressive | 1 |
| 20140290377 | Compression Testing Device For Testing Materials Automatically - A compression testing assembly for compression testing of a test material includes a testing stage with a first surface and a second surface. The test material is disposed between the first and second surfaces. The assembly also includes a thickness detector that automatically detects a thickness of the test material. Moreover, the assembly includes an actuator that moves at least one of the first and second surfaces toward the other of the first and second surfaces to compress the test material to a predetermined percentage of the detected thickness of the test material. Additionally, the assembly includes a load detector that detects a compression load of the test material and that detects a change in the compression load over time. | 10-02-2014 |
| 073814000 | Torsional | 1 |
| 20090114034 | Shaft Torque Profiling Apparatuses and Methods of Use - Embodiments of shaft torque profiling apparatuses and methods of use are generally described herein. In one embodiment, a method for determining the torsional stiffness of a least a portion of a shaft comprises: immobilizing a first portion of the shaft; immobilizing a second portion of the shaft to define a first region between the first portion and the second portion; rotating a first portion of the first region about an axis of the shaft; and measuring a rotation of the first portion of the first region. Other embodiments herein may be described and claimed. | 05-07-2009 |
| 073815000 | Shear | 1 |
| 20160109344 | OPTIMISATION OF A CYCLE FATIGUE OR CYCLE AND HIGH-CYCLE FATIGUE TEST RIG - A method for optimising a cycle and optionally high-cycle fatigue test rig, said test being intended to reproduce a support for turbomachine parts, wherein it comprises the steps consisting of determining variable geometric parameters of the support member and/or of the workpiece of the rig, in addition to ranges of variation of these parameters, determining at least one aim to be achieved, a variation in the values of at least a part of the abovementioned parameters having an influence on this aim, modifying one or a plurality of the values of the abovementioned parameters, in the respective ranges of same, and determining those that make it possible to achieve the aim, and producing or modifying a support member and/or a workpiece on the basis of the optimised parameters. | 04-21-2016 |
