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| Number | Title | Issue Date |
| 8175821 | Method for measuring physical quantity distribution and measurement system using sensor for physical quantity distribution It is an object of the present invention to provide a measurement system that measures physical quantity distribution over the entire region using a sensor for physical quantity distribution (PQD sensor) that realizes high stretchability, flexibility, etc., in at le... | 05/08/2012 |
| 8126659 | Computational method of material constant of composite material and volume fraction of material component in composite material, and recording medium In computing the overall material constant of a composite material, a virtual composite material is defined as the one that predetermined material components are dispersed in a form of spherical particles in a matrix phase at known volume fractions, and a nonlinear ... | 02/28/2012 |
| 8108156 | Methods, program products, and systems for estimating the stress-strain relationship of a toughened structural adhesive polymer Methods, program products, and computer systems for estimating a stress of a toughened structural adhesive polymer are provided. One method comprises selecting a strain, a strain rate, a temperature, or a combination thereof at which the stress is to be estimated. A... | 01/31/2012 |
| 8108157 | Electrospun fibrous nanocomposites as permeable, flexible strain sensors The present invention generally relates to methods to provide electrospun polymer/nanoparticle composite-fiber structures for use as lightweight, compliant, porous strain sensors for non-cyclic strain sensing. In one embodiment, the fibers in the nanocomposites comp... | 01/31/2012 |
| 8032313 | Device for measuring a load at the end of a rope wrapped over a rod A machine for raising and lowering a load, the machine including a platform, a boom attached at one end to the platform, a rod mounted transverse to the longitudinal axis of the boom on the other end of a boom, the rod having a central bore there through, with at le... | 10/04/2011 |
| 7983854 | Method and apparatus for monitoring a structure The present disclosure discloses a method of monitoring a structure by a monitoring system including at least one strain gauge positioned on the structure and a computer processor coupled to the at least one strain gauge. According to at least one embodiment, strain... | 07/19/2011 |
| 7966135 | Characterizing curvatures and stresses in thin-film structures on substrates having spatially non-uniform variations Techniques and devices are described to use spatially-varying curvature information of a layered structure to determine stresses at each location with non-local contributions from other locations of the structure. For example, a local contribution to stresses at a s... | 06/21/2011 |
| 7953562 | Method and apparatus for measuring the stress or strain of a portion of a ferro-magnetic member A method and apparatus for measuring stress or strain in a portion of a ferromagnetic member is disclosed in which advantage is taken of the fact that the magnetic properties of a ferromagnetic member change with applied tensile or compressive stress. A magnetic hys... | 05/31/2011 |
| 7953561 | Resonance test system An apparatus (10) for applying at least one load to a specimen (12) according to one embodiment of the invention may comprise a mass (18). An actuator (20) mounted to the specimen (12) and operatively associated with the mass (1... | 05/31/2011 |
| 7949482 | Delay-based bias temperature instability recovery measurements for characterizing stress degradation and recovery A method, test circuit and test system provide measurements to accurately characterize threshold voltage changes due to negative bias temperature instability (NBTI) and positive bias temperature instability (PBTI). Both the bias temperature instability recovery prof... | 05/24/2011 |
| 7945398 | Reflow process evaluation device and reflow process evaluation method A reflow process evaluation device includes, a stress calculation part for calculating an average principal stress acting on a joint portion, wherein a principal stress occurs when a chip and a substrate are joined by solder with a reflow method and a rupture occurr... | 05/17/2011 |
| 7930113 | Measuring stresses in multi-layer thin film systems with variable film thickness Systems are described that include computer program products that enable data processing apparatus to perform operations to determine stresses for a system including a substrate with a plurality of films layered thereon. The operations include determining film stres... | 04/19/2011 |
| 7881882 | Apparatus and method for detecting tampering in flexible structures A system for monitoring or detecting tampering in a flexible structure includes taking electrical measurements on a sensing cable coupled to the structure, performing spectral analysis on the measured data, and comparing the spectral characteristics of the event to ... | 02/01/2011 |
| 7848895 | Predicting changes in hydrofrac orientation in depleting oil and gas reservoirs Stress rotation due to depletion can be estimated in reservoirs having an impermeable reservoir boundary. More specifically, the isotropic change in stress due to depletion, and the uniaxial stress resulting from a change in pore pressure across an impermeable bound... | 12/07/2010 |
| 7826985 | Power module life estimation fatigue function A system and method for estimating a condition of a power module is provided. In accordance with an embodiment, a motor controller may be maintained by tracking a total proportion of power module life expended by a power module in a variable frequency motor controll... | 11/02/2010 |
| 7801690 | Tensile support strength measurement system and method A method and system determines probable strength degradation in a tensile support in an elevator system by monitoring an electrical characteristic of the tensile support as a whole, such as the total electrical resistance of the tensile support, that varies as the r... | 09/21/2010 |
| 7769550 | Stress analysis method and stress analysis apparatus A stress analysis method uses a thermoelastic stress measurement device to measure measuring stress state acting on an object by measuring material temperature state variation caused by stress, a mechanoluminescence measurement device to measure measuring stress sta... | 08/03/2010 |
| 7747396 | Apparatus and method for measuring loads sustained by a bearing pin A pin bearing arrangement for use on an aircraft landing gear includes a pin and a load sensor arrangement, which may include strain gauges for measuring shear loads and accelerometers for measuring loads sustained by the pin. The pin includes a self-contained data ... | 06/29/2010 |
| 7715994 | Process for using surface strain measurements to obtain operational loads for complex structures The invention is an improved process for using surface strain data to obtain real-time, operational loads data for complex structures that significantly reduces the time and cost versus current methods. ... | 05/11/2010 |
| 7668669 | Method for estimating magnitude of back-and-forth-direction force exerted on tire A method for estimating the magnitude of a back-and-forth-direction force exerted on a tire comprises: using a plurality of strain sensors fixed to a tire sidewall capable of outputting data on the magnitude of a strain occurred at the position of the strain sensor;... | 02/23/2010 |
| 7668668 | Stress component measurement method A method of measuring a stress component in a short period of time in a nondestructive manner and a stress component measurement device that includes a stress component comparison section that compares a Raman spectrum L obtained in a predetermined area W1 of... | 02/23/2010 |
| 7590497 | Automatic generation of tolerance schemes Automatic generation of a tolerance scheme includes accessing data defining a three-dimensional model that defines a part for manufacture, identifying a tolerance feature in the three-dimensional model, determining at least one unconstrained degree of control for th... | 09/15/2009 |
| 7567874 | System and method for detecting furniture cruising frequency to monitor gait decline A system and method for detecting furniture cruising frequency to monitor gait decline. Embodiments of the invention monitor the frequency of furniture cruising in one's home in such a way that it does not require daily user intervention to operate. Here, shock sens... | 07/28/2009 |
| 7561976 | Method and system for monitoring the performance of a pipe containing a pressurised fluid A method and system for monitoring the performance of a pipe containing a pressurised fluid. The pipe is made up of at least one current zone and singular zones. A predetermined number of singular zones are monitored, in order to obtain circumferential expansion inf... | 07/14/2009 |
| 7519481 | System and method for predicting compatibility of fluids with metals A method and system for selecting fluids for compatibility with specified metals exposed to oil field environments. Metal specimens are tested for corrosion and/or cracking behavior by exposing them to fluids under stressful test conditions. The testing is conducted... | 04/14/2009 |
| 7512502 | Method and apparatus for analyzing deformation and predicting failure in solid-state objects The invention is a method to predict the type of deformation of an object as elastic, plastic or fracture from a time series of specklegram patterns or fringe patterns (the difference of specklegrams). From the recorded patterns, a velocity vector field is calculate... | 03/31/2009 |
| 7487050 | Techniques and devices for characterizing spatially non-uniform curvatures and stresses in thin-film structures on substrates with non-local effects Techniques and devices are described to use spatially-varying curvature information of a layered structure to determine stresses at each location with non-local contributions from other locations of the structure. For example, a local contribution to stresses at a s... | 02/03/2009 |
| 7487051 | Evaluating method of the fracture toughness using the continuous indentation method The present invention relates to a method of evaluating the fracture toughness of a material using the continuous indentation technique. In the method of this invention, the stress coefficient, strain hardening modulus and yield stress of the material are determined... | 02/03/2009 |
| 7480575 | Method for detecting mechanical features of a material and apparatus that carries out this method A method for detecting mechanical features of a material, in particular a metal material, provides a preliminary step where a database is created containing a finite number of reference curves (P,h) (52). Such curves are obtained using a finite elements analy... | 01/20/2009 |
| 7477995 | Optical linear strain gage An optical linear strain gage includes a target, a sensor, and a computer, wherein the target contains a gage length defined by end points. The target can be a one-dimensional barcode, the gage length defined between, and perpendicular to, two chosen parallel lines ... | 01/13/2009 |
| 7454297 | System and method for determining fatigue life expenditure of a component A system and method for determining remaining fatigue life of a component experiencing stress/strain cycles. In one embodiment the fractional life expended per clock cycle of the component is determined and multiplied by a data type value indicating whether a full c... | 11/18/2008 |
| 7433789 | Method, apparatus and computer program product for determining a maintenance value associated with a component A method, apparatus and computer program product are provided in which information identifying a stress/strain range cycle and the time duration of the stress/strain range cycle associated with the component is received. The maintenance value based upon the actual s... | 10/07/2008 |
| 7423442 | System and method for early qualification of semiconductor devices According to one embodiment of the invention, a method for early qualification of semiconductor device includes performing initial testing on a semiconductor device, receiving fail data on the semiconductor device, determining a solution model for the semiconductor ... | 09/09/2008 |
| 7418353 | Determining film stress from substrate shape using finite element procedures A method for determining the stresses in a film applied to a substrate from measured substrate shape. The substrate is first analyzed using finite element techniques to obtain nodal forces at the surface of the substrate to which the film is applied, based on measur... | 08/26/2008 |
| 7412899 | MEMS-based monitoring A solution for monitoring a property of an object and/or an area using a Micro-ElectroMechanical Systems (MEMS)-based monitoring device is provided. In an embodiment of the invention, the MEMS-based monitoring device includes a MEMS-based sensing device for obtainin... | 08/19/2008 |
| 7415398 | Method of simulating viscoelastic material The present invention relates to a method of simulating the deformation of a viscoelastic material in which filler is blended to a matrix made of rubber or resin, the method including the steps of dividing the viscoelastic material into a finite number of elements t... | 08/19/2008 |
| 7415363 | High resolution torque measurement on a rotating shaft with movement compensation An apparatus for determining the torque imposed on a rotatable shaft. The shaft has at least four paired probes, paired horizontal probes and paired vertical probes. The horizontal probes are positioned 90 degrees apart from the vertical probes. If the shaft moves h... | 08/19/2008 |
| 7400994 | Method and test component for rotatable disc parts Rotatable discs combined with turbine blades in engines must be tested for critical life analysis. Thus, consideration must be made as to life expectancy for such components as a result of tensile circumferential hoops as generated by the weight of blades under rota... | 07/15/2008 |
| 7398164 | Sensor network system, base station, and method to forward measured data The object of the invention is to facilitate the entry of a sensor node and the adoption of a protocol in the existing sensor network system effectively utilizing limited resources of radiocommunication. To achieve the object, the following are provided. A sensor no... | 07/08/2008 |
| 7395179 | Rotation angle calculating method of wire harness, rotation angle calculating apparatus, and computer-readable recording medium In a rotation angle calculating method of a wire harness, a rotation angle of the wire harness is calculated at an arbitrary measuring point of the wire harness when the wire harness is deformed from a first shape to a second shape while a fixed point of the wire ha... | 07/01/2008 |
