Class / Patent application number | Description | Number of patent applications / Date published |
073834000 | To failure | 14 |
20110214509 | METHOD FOR PREDETERMINING THE FATIGUE LIFE OF POLYMER COMPOSITION - The invention relates to a method for evaluating the fatigue life of a polymer composition, including the following steps: i) providing a polymer composition; ii) manufacturing a plurality of axisymmetric test tubes cut from said composition; iii) subjecting said test tubes to a uniaxial traction fatigue test including a plurality of loading and unloading cycles for the test tube, the geometry of the test tube making it possible to subject the material to triaxial stresses, in the area of the test tube cut, simulating the stress conditions for the pressure sheath of a flexible pipe, particularly for off-shore use; and iv) predetermining the number of cycles until the rupture of said polymer composition. The invention is related to the use of said polymer composition selected through the predetermining method for manufacturing pipes or conduits to convey a pressurized and/or corrosive fluid. | 09-08-2011 |
20110239775 | PIN SOLDERING FOR PRINTED CIRCUIT BOARD FAILURE TESTING - Systems and methods for performing pin-pull testing of a printed circuit board (PCB) are presented. The pin-pull testing generally involves the use of a standard tensile tester that is useful for performing other tests aside from pin-pull testing. In this regard, a non-specific pin may be used in conjunction with the tensile tester without the need to purchase or manufacture pins specially adapted for use with a specially designed tensile tester. Additionally, the pin-pull testing may include application of heat to the pin by way of an external heat supply such that the need of a heater integrated into the testing device to heat a pin during the testing may be eliminated. As such, a common heating element (e.g., a standard soldering iron) may be employed by applying heat to a pin directly with the external heat supply. Additionally, a dying process is presented that may be performed on a PCB prior to the pin-pull test that allows for evaluation of the presence of cracks in the PCB adjacent to a contact pad prior to the execution of the pin-pull test. | 10-06-2011 |
20130061683 | SYSTEMS AND METHODS FOR PERFORMING STRUCTURAL TESTS ON WIND TURBINE BLADES - Systems and methods for performing structural tests on wind turbine blades are disclosed herein. A system in accordance with a particular embodiment includes a test stand positioned to carry a test article that includes at least a portion of a wind turbine blade. The system can further include first and second reaction anchors movably positioned relative to the test stand. A first generally horizontal force link is attached to the first reaction anchor and coupleable to the test article to apply a first horizontal load to the test article. A second generally horizontal force link is attached to the second reaction anchor and is coupleable to the test article to apply a second horizontal load to the test article. The test stand can be positioned to apply a test stand force to the test article equal and opposite to the sum of the first and second horizontal loads. | 03-14-2013 |
20130192384 | METHOD FOR TESTING TENSILE STRENGTH OF AN ELECTRICALLY NONCONDUCTIVE MATERIAL - The invention pertains to a method and apparatus for testing the tensile strength of a material, particularly an electrically nonconductive material, at a temperature above ambient temperature. The test method is useful for determining the potential suitability of a material for use as a development medium in a thermal development process for preparing relief printing forms. One embodiment of the method includes mounting the strip between upper and lower chucks of a tensile test machine; positioning a means for generating a hot air stream adjacent the strip so that the stream does not impinge the strip; heating the hot air stream to a predetermined temperature above ambient temperature; repositioning the hot air stream so that the stream impinges the strip; and starting the tensile testing when the hot air stream at the predetermined temperature begins heating the strip. | 08-01-2013 |
20130205912 | METHOD AND APPARATUS FOR BENDING LONG MEMBER, AND METHOD FOR BENDING DOOR FRAME - A method of bending a long member includes applying a tensile force to the long member to draw out the long member in a lengthwise direction thereof, measuring a displacement of the long member after commencement of the application of the initial tensile force, and bending the long member by applying a correction tensile force and a bending pressure for bending the long member into a curved shape in the lengthwise direction simultaneously to the long member upon the displacement exceeding a predetermined tensile fracture threshold value within a predetermined period of time or after a lapse of the predetermined period of time without the displacement exceeding the tensile fracture threshold value. The correction tensile force is smaller than the tensile force at the time the displacement exceeds the tensile fracture threshold value or the tensile force at the lapse of the predetermined period of time. | 08-15-2013 |
20140083198 | METHODS OF VALIDATING EDGE STRENGTH OF A GLASS SHEET - Methods of validating edge strength of a glass sheet are provided. The glass sheet comprises a first surface, a second surface opposing the first surface, a thickness defined between the first surface and the second surface, and at least one edge comprising an edge surface. The first surface and the second surface intersect the edge surface of the at least one edge. The methods comprise a step (I) of noncontactually thermally loading the glass sheet to subject at least a portion of the at least one edge to a tensile stress. The methods also comprise a step (II) of determining whether the at least one edge has an edge strength below a predetermined level by detecting whether a resulting strength imperfection has originated in the glass sheet due to the noncontactual thermal loading of step (I). | 03-27-2014 |
20140137661 | METHOD FOR DEMONSTRATING THE STRENGTH OF A FIBROUS STRUCTURE - A method for demonstrating the strength of an absorbent product. The method can include providing a first and second absorbent product; providing, for each of the first and second products, an upper and a lower holding clamp; attaching one of the upper holding clamps to each of the first and second absorbent products; attaching one of the lower holding clamps to each of the first and second absorbent products; optionally, attaching a first predetermined weight to the lower holding clamp; wetting each of the first and second absorbent products with a wetting fluid; waiting until one of the first or second absorbent products fails in tension; optionally, (i) spray a second predetermined amount of the wetting fluid; or (ii) add a second predetermined weight to the lower holding clamp; repeating certain steps until the absorbent product fails in tension. | 05-22-2014 |
20140165738 | Feedback System and Method for Assessing Fixation and Stability of Implantable Leads - A lead fixation and stability feedback assembly for testing stability and anchoring of a fixation tip of a distal end of an implantable lead to a tissue is disclosed. The assembly includes a first member including a first coupling arrangement configured to couple to a proximal end of an implantable lead, wherein the proximal end of the implantable lead is coupled to a distal end of the implantable lead configured to be anchored to a tissue, and a second member including a second coupling arrangement configured to couple the first member to the second member, the second coupling arrangement configured to decouple the second member from the first member when a predetermined force is applied to pull the second member away from the first member to thereby test the anchoring of the distal end of the implantable lead to the tissue. | 06-19-2014 |
20140352452 | SYSTEMS AND METHODS FOR MATERIALS TESTING - Systems and methods for materials testing are disclosed. According to one embodiment, a system for materials testing comprises a communication interface coupled to testing hardware, an electronic user interface for facilitating the input of production requirements and a specification, and a display device for displaying results of tests conducted on the testing hardware, wherein the results are based in part on the production requirements and specification. | 12-04-2014 |
20150122048 | METHOD FOR TESTING LIFTING RING USED AS PLASTIC INFUSION VESSEL - The present invention discloses a test method for suspension rings used for a plastic infusion container, which comprises the four steps of a routine test, an accelerated ageing test, a thermal adaptability test, and a melt flow rate test. The present invention provides an effective means for finding possible problems or defects of the suspension ring used for a plastic infusion container on such aspects as design, material and process, provides a basis for identifying the performances of the suspension rings used for a plastic infusion container, and ensures that the suspension rings used for a plastic infusion container are only used after the performances thereof are identified, and ensures that the quality of the suspension rings used for a plastic infusion container meet industry requirements, so that the probability of occurrence of a medical accident is minimized. | 05-07-2015 |
20150292997 | ROOFING PULL-TEST FRAME ASSEMBLY - A roofing pull-test frame assembly includes a base, a frame plate, and legs. The base is placed on a roof during use of the roofing pull-test frame assembly. The base has one or more walls with a bracing surface. The legs extend between the base and the frame plate and support the frame plate above the base when the roofing pull-test frame assembly is assembled together. In use, loads experienced during a pull-testing event are transmitted between the legs and base via surface-to-surface abutment with the bracing surface. | 10-15-2015 |
20150330883 | LIQUID SALT ENVIRONMENT STRESS-RUPTURE TESTING - Disclosed herein are systems, devices and methods for stress-rupture testing selected materials within a high-temperature liquid salt environment. Exemplary testing systems include a load train for holding a test specimen within a heated inert gas vessel. A thermal break included in the load train can thermally insulate a load cell positioned along the load train within the inert gas vessel. The test specimen can include a cylindrical gage portion having an internal void filled with a molten salt during stress-rupture testing. The gage portion can have an inner surface area to volume ratio of greater than 20 to maximize the corrosive effect of the molten salt on the specimen material during testing. Also disclosed are methods of making a salt ingot for placement within the test specimen. | 11-19-2015 |
20160033379 | Method and Apparatus for Determining the Fracture Strength of the Margins of Thin Sheets of Brittle-Fracture Material - A method and an apparatus for examining the fracture strength of flat samples made of brittle-fracture material are provided. The margin of the respective sample is subjected to tensile stress by bending the material in a circular arc shape. | 02-04-2016 |
20160033380 | Method and Apparatus for Determining the Edge Strength of Plate-Shaped Elements Made of Brittle-Fracture Material - An improved measurement method and a corresponding measurement device are provided that measure the edge strength of plate-shaped elements made of brittle-fracture material. For this purpose, a long sample is drawn apart at the short edges, wherein the force transmission points lie next to the center of gravity of the base surface of the sample. | 02-04-2016 |