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| Number | Title | Issue Date |
| 7757566 | Testing system for flip-type electronic device A testing system (100) is used to test a flip-type electronic device (80). The electronic device includes a cover (802) and a main body (801). A hinge (803) connects with the cover and the main body. The testing system includes a b... | 07/20/2010 |
| 7409869 | Resistance test method A method for evaluating thermal fatigue resistance for a welding consumable alloy can include the following steps: placing a test specimen of a welding consumable alloy in a testing device such that a tensile load and a compressive load can be introduced to the test... | 08/12/2008 |
| 7409870 | Elevator load bearing member wear and failure detection An elevator load bearing member (22) monitoring device (20) has a controller (30) that applies a first signal (40) and a second signal (50) to at least one tension member (24) in the belt. The first signal (40) in one... | 08/12/2008 |
| 7370542 | Flat belt durability tester The apparatus is a multi-speed flat belt durability tester that can simultaneously test several belts of different lengths. The tester can apply different tensions to each belt with a tension pulley powered by a hydraulic cylinder, and it monitors the tracking of th... | 05/13/2008 |
| 7363821 | Systems and methods for fatigue testing stents Systems and methods for fatigue testing one or more stents based on measured electrical resistance levels of each stent. Pairs of lead lines from an ohmmeter are connected to a respective stent. The respective stent is mounted onto an expander having an interior tap... | 04/29/2008 |
| 7299703 | Bearing balls escape and wear annunciator arrangement for ball screw An arrangement for detecting a load bearing failure includes a primary load-carrying system for bearing axially translatably a coaxial load, said primary load-carrying system having a rotor portion and an axially displaceable stator portion. A plurality of bearing b... | 11/27/2007 |
| 7204152 | Apparatus and method for fatigue testing A method of simulating life of a rotor blade mounting feature mounted in a complementary rotor disc mounting feature comprises the steps of providing two specimen mounting features (37) each having portions defining pressure faces matching in profile respecti... | 04/17/2007 |
| 7204153 | Apparatus and a method for testing attachment features of components An apparatus (10) for testing attachment features (26,28,30,32) of components (12,14) comprises a first member (16) having a first end (18), a second end (20), a first edge (22) and a second edge (24). The firs... | 04/17/2007 |
| 7155982 | Testing apparatus for compression and shear testing of a test component such as a curved aircraft component A testing apparatus receives a test component between a force introduction table and a pressure plate, which apply a compressive load to the component therebetween. First and second shear beams are secured to opposite vertical edges of the component to respectively ... | 01/02/2007 |
| 6945098 | Hydrocyclone wear-detection sensor Wear-detection sensor has a body of electrically insulating material with an opening through which a flowable substance can pass, and one or more electrical conductors surrounding the opening and adapted to undergo a discernable change in conductivity as the insulat... | 09/20/2005 |
| 6912916 | Polyvalent test stand A test stand for allowing the testing of both a pull-type lifting apparatus and a push-type lifting apparatus. The test stand includes a base and a carriage component, the carriage component including a load transmitting section and a sensor receiving section. The l... | 07/05/2005 |
| 6905073 | Electronic card assembly and shell therefor An electronic card and the shell for the electronic card capable of exceeding applicable bending, torque, and fingernail test specifications are disclosed. The electronic card assembly can resist a bend of greater than 10° during a torque test applying a torque of ... | 06/14/2005 |
| 6843135 | Method and apparatus for remotely monitoring corrosion using corrosion coupons A method and an apparatus for remotely and automatically monitoring for corrosion of a tank, pipe, or container with a gas or liquid environment using corrosion coupons that do not have to be removed from the environment for inspection and evaluation. The coupons ar... | 01/18/2005 |
| 6681639 | Method of estimating the lifetime of thermal barrier coatings A method of estimating the lifetime of a thermal barrier coating (14), which is applied to the surface of a member subjected to cyclical thermal loads, especially a vane and/or blade of a gas turbine, by means of a bond coat (12) lying in between the coat... | 01/27/2004 |
| 6591692 | Bend-test device for wire harnesses A bend-test device for wire harnesses capable of handling a plurality of samples at the same time. The bend-test device includes a fixed frame unit, a hinge unit with a fulcrum axis, and a mobile frame unit connected to the fixed frame unit via the hinge ... | 07/15/2003 |
| 6494104 | Bend test for a wire harness and device for such a test The invention provides a method of simulating and estimating the minimum lifetime under repeated bending for a wire harness containing a plurality of electrical cables, by applying a compact and lightly equipped device. To this end, representative electri... | 12/17/2002 |
| 6443016 | Electric cable assembly with sacrificial conductors A cable assembly having a critical conductor and a sacrificial conductor and a critical conductor which has a fatigue life of a predetermined first length and the sacrificial conductor has a fatigue life of a predetermined second length shorter than the p... | 09/03/2002 |
| 6250166 | Simulated dovetail testing A dovetail of a rotor blade is mounted in a complementary slot in a rotor disk. Life of the dovetail is simulated by providing a specimen dovetail mounted in a complementary slot in a fixture. Relative stiffness of the specimen dovetail and fixture are ta... | 06/26/2001 |
| 6119527 | Method and apparatus for proof testing optical fibers A method, technique, and apparatus proof test an optical fiber interconnect by applying an ends off-set stress on the optical fiber until the optical fiber fails or breaks, either immediately (short-term strength), or as a result of the delayed-fracture/"... | 09/19/2000 |
| 5930155 | Method of evaluating endurance of vehicle wheel by computer simulation A method of evaluating endurance of a vehicle wheel by computer simulation of a dynamic radial fatigue test. The modeling of the system is simplified by modeling the tire portion made of a nonlinear material by linear elements, and modeling each of the ai... | 07/27/1999 |
| 5881971 | Monitoring systems for detecting failures in fly-by-wire aircraft flight control systems A monitoring system for detecting failures, or impending failures, in subsystems of a fly-by-wire primary flight control system of an aircraft. The system monitor a critical variable of at least two controllers acting in concert, in real time. Differences... | 03/16/1999 |
| 5698977 | Eddy current method for fatigue testing Flux-focusing electromagnetic sensor using a ferromagnetic flux-focusing lens simplifies inspections and increases detectability of fatigue cracks and material loss in high conductivity material. A ferrous shield isolates a high-turn pick-up coil from an ... | 12/16/1997 |
| 5677494 | Method for high strain-rate testing of specimens A mechanical impact test is performed using an incremental mechanical loading apparatus having a loading head movable in a first direction and in a second direction opposite to the first direction, and a stationary cross piece. A starter specimen is mount... | 10/14/1997 |
| 5652386 | Method and apparatus for predicting sturctural integrity by estimating modal damping factor The integrity of structures may be determined by either one of two methods. In a first method, an impulse of energy is introduced into the structure, such as by striking the structure, and the induced vibration is measured and the modal damping factor is ... | 07/29/1997 |
| 5567884 | Circuit board assembly torsion tester and method A torsion tester for circuit board assemblies (boards) clamps opposite edges of the board and cyclicly twists the board to provide substantially pure sheer stress in interconnection joints to SMT components for replicating failure modes due to thermal cyc... | 10/22/1996 |
| 5544530 | Assembly suitable for life testing a multi-dimensional force transducer A test assembly suitable for life testing a computer pointing stick includes a rigid shaft that is rotated by a motor and a mounting mechanism for holding and positioning the pointing stick under test in a coaxial relationship with the rigid shaft. A cant... | 08/13/1996 |
| 5428556 | Apparatus for predicting tool life There is provided an apparatus for predicting a tool life which reports a tool life ratio to an operator or a control device, when a remarkable change of work load values is detected. In a predicted life setting section 122, there is set a percentage of a... | 06/27/1995 |
| 5423223 | Fatigue detection in steel using squid magnetometry The magnetoelectric coefficient in iron-based alloys has a stress value of about 0.6 of that of the elastic limit. A reversal in sign is caused by structural phase slip which is the basis for the onset of metal fatigue. Based on this phenomenon, a method ... | 06/13/1995 |
| 5419200 | Method for assessing the effects of loading forces on a composite material structure To determine the optimum load a laminate member or element is capable of bearing, a three-dimensional progressive analysis is proposed in which the stress and strain states of each ply of the laminate are subjected to failure criteria. If there is failure... | 05/30/1995 |
| 5417116 | Active stress specimen using an electromagnet and belleville washer An apparatus and method for inducing and measuring crack growth in a solid by using a double cantilever beam assembly which includes a fracture specimen with a notch that defines a pair of spaced outwardly extending beams terminating at an end where growt... | 05/23/1995 |
| 5046368 | Apparatus and method for fatigue testing a wheel An apparatus and method for fatigue stress testing a vehicle wheel or the like includes a plate to which the wheel is mounted, and a clamping system for maintaining the wheel stationary. The clamping system fixes the vertical and lateral position of both ... | 09/10/1991 |
| 5038619 | Process and an apparatus for testing vehicle stabilizers A process and an apparatus for testing stabilizers (10) which are supported on stationary bearings (16, 17) upon a bench (32) and which are strained via a drive assembly by movement of one stabilizer leg (12) against the other stabilizer leg (13) includes... | 08/13/1991 |
| 4998440 | Apparatus and method for fatigue testing a wheel An apparatus and method for fatigue stress testing a vehicle wheel or the like includes a plate to which the wheel is mounted, and a clamping system for maintaining the wheel stationary. A nonrotatable shaft is connected to the plate through a bushing. Th... | 03/12/1991 |
| 4836029 | Method and apparatus for measuring crack growth A method and apparatus for determining crack growth in an elastomer. A horizontally elongate elastomeric test specimen is cyclically stretched crosswise by upper and lower rigid plates contiguously attached to the long edges on both sides. The lengthwise ... | 06/06/1989 |
| 4777829 | Multi-station piezoelectric load cycle counter A piezoelectric load cycle counter is provided for a multi-stationed strain-life tester. A plurality of test specimens are interposed between a fixed upper bracket and a lower reciprocating bracket and are cyclically flexed therebetween. Piezoelectric cry... | 10/18/1988 |
| 4718281 | Bearing-bypass material system test A material specimen 12 containing a central hole is bolted (bolt 27) between two bearing guide plates 28 and 29. An applied load control 11 applies an applied load, either tension or compression, to one end of specimen 12 and a bypass load control 13 appl... | 01/12/1988 |
| 4676110 | Fatigue testing a plurality of test specimens and method A fatigue testing apparatus (10) for simultaneously subjecting a plurality of material test specimens (24) to cyclical tension loading to determine the fatigue strength of the material. The fatigue testing apparatus includes a pulling head (12) having cyl... | 06/30/1987 |
| 4538462 | Adhesive bond integrity evaluation method The invention is a method of determining whether an adhesively bonded joint between two structural elements meets established strength requirements. The method comprises the following steps: (1) Determining by test the levels of acoustic energy to be dire... | 09/03/1985 |
| 4487069 | Method of image display by ultrasonic microscope A method of image display of a specimen by an ultrasonic wave microscope comprising an acoustic wave propagating medium, a piezoelectric member provided at one end of said medium for generating an ultrasonic beam, and an acoustic wave lens formed at an op... | 12/11/1984 |
| 4409841 | Fatigue damage indicators A fatigue damage indicator includes a thin plate mounted between or integral with two members to which a stress is to be applied, the disposition of the two members being such that the thin plate is stressed in shear. Slots extending in the direction of t... | 10/18/1983 |
