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| Number | Title | Issue Date |
| 8087301 | Optical systems and methods for determining tire characteristics The invention is related to systems and methods for optically measuring conditions and characteristics related to vehicle tires. In one embodiment, a tire monitoring system comprises a grid, a camera, and a processor. The grid can be configured to deform in conjunct... | 01/03/2012 |
| 8082799 | 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 proper... | 12/27/2011 |
| 8056422 | Method and member for measuring stress distribution of natural bone, synthetic bone, or member attached to them When visualizing the stress distribution of natural bone, synthetic bone, or a member attached to either thereof without omitted points, in order to measure accurately in a variety of modes using an inexpensive system, a mechanoluminescence material thin film 6 | 11/15/2011 |
| 8028586 | Load cell and system for measuring forces based on optical spectra shifts A load cell having an optical micro-resonator in a housing formed of high thermally conductive material. Upon application of a force to a surface of the housing, the micro-resonator is squeezed and changes in shape and refractive index, thereby changing the resonant... | 10/04/2011 |
| 8006566 | Screening of silicon wafers used in photovoltaics A method for screening silicon-based wafers used in the photovoltaic industry is provided herewith. ... | 08/30/2011 |
| 8006567 | Stress history recording system A stress history recording system for recording a stress history, which includes a light emitting section including a stress-stimulated luminescent material that emits light in response to a mechanical external force, and a recording section for recording a history ... | 08/30/2011 |
| 7987729 | Attachable member, attaching mechanism, and printer An ink cartridge, which is releasably installed to a cartridge-installing section, includes a contact section which is brought into contact with the cartridge-installing section when the ink cartridge is installed to the cartridge-installing section, a stress light-... | 08/02/2011 |
| 7984656 | NSMS flight laser detector system A method includes rotating a rotor, measuring a rotor rotational time for the rotor to complete a revolution, determining a blade interval by dividing the rotor rotational time by a number of blades carried on the rotor, establishing an active hold-off time interval... | 07/26/2011 |
| 7918141 | Local residual stress measurement and analysis for detection and prediction of damage in thermal barrier coatings The present invention provides a method for evaluating degradation of a thermal barrier coating disposed on a turbine blade. The method includes measuring a residual stress of an outer surface portion of a thermal barrier coating on a turbine blade, the turbine blad... | 04/05/2011 |
| 7856888 | Fiber optic strain gage and carrier The current invention relates to optical gages designed to measure strain on the surface of a test specimen. The gages of this invention is designed to be installed and used in a manner similar to conventional electronic foil strain gages, but to have the advantages... | 12/28/2010 |
| 7770463 | Shear stress measurement apparatus A shear stress sensor for measuring the shear force of a fluid flowing along a wall. A floating member, flush with the wall, senses a shear force of the flowing fluid. The floating member is mounted by support means to a base element that is placed in the wall, so t... | 08/10/2010 |
| 7743669 | Load detecting sensor and collision detecting sensor using the same A load detecting sensor includes a first member, a second member, and an optical fiber. The first member has a groove having a bottom portion and a column portion which defines the groove. The second member covers the groove of the first member so that a surrounded ... | 06/29/2010 |
| 7703331 | Instrumented tabular device for transporting a pressurized fluid The invention relates to an instrumented tubular device for transporting a pressurized fluid notably in the field of oil exploration and in that of the transport of gas or hydrocarbons. This device comprises a tube in which this fluid flows, with which are associate... | 04/27/2010 |
| 7658113 | Lift measurement A method of determining the lift generated by a lift-generating member is presented. The lift-generating member being coupled to a component within the lift load path with the lift load path component experiencing strain as a result of the lift generated by the lift... | 02/09/2010 |
| 7650793 | Gathering data concerning publication usage Methods and systems for measuring and gathering data relating to publication usage by participants in publication readership studies. Some methods and systems employ portable monitors carried by participants of the studies along with publications fitted with various... | 01/26/2010 |
| 7634948 | Process and device for dynamic measurement of the axial deformation of a rotating hollow shaft A process and device for dynamic measurement of the axial deformation of a rotating hollow shaft (10), a glass fiber segment (16) of a fiber optic sensor (18) being attached securely to a section of the inside wall of the hollow shaft (10... | 12/22/2009 |
| 7617737 | Adjustment of pitch and roll static torques in a disk drive head gimbal assembly In a system and method for adjusting a static torque on a slider in a head-gimbal assembly, a substantially rigid mass is placed on an air-bearing surface (ABS) of a slider. A static attitude of the slider is measured, and an adjustment location and intensity for a ... | 11/17/2009 |
| 7610815 | Testing of samples A method of monitoring the surface of a sample under test is provided and the method comprises the steps of: illuminating the surface with light (20) polarised in a first direction; viewing light reflected from the surface through a polarising filter (27 | 11/03/2009 |
| 7594443 | Mechanically tunable optical-encoded force sensor An optical-encoded force sensor is disclosed. The optical-encoded force sensor includes a cantilever probe having a probe tip, a set of reflective phase gratings and multiple nano-photonic displacement sensors. The reflective phase gratings are mechanically coupled ... | 09/29/2009 |
| 7578199 | Apparatus and method suitable for measuring the displacement or load on an aircraft component The load on an aircraft component, such as the load on a landing gear leg during braking, is measured with a contactless, all-weather displacement measuring system. The system includes a control unit a controllable microwave emitter of electromagnetic radiation and ... | 08/25/2009 |
| 7571653 | Stress measuring method and system An energy beam is applied to an evaluation region of a sample, a phase distribution image of the energy beam transmitted to the sample in the evaluation region is obtained, and the obtained phase distribution image is analyzed, whereby a stress distribution in the e... | 08/11/2009 |
| 7509872 | Stress and strain analysis method and its equipment Provided are a stress analysis method and stress analysis equipment that enable a detailed stress measurement, by using both a photoelasticity measurement method and a stress measurement (mechanoluminescence measurement) which utilizes a mechanoluminescent substance... | 03/31/2009 |
| 7506549 | Method and apparatus suitable for measuring the displacement or load on an aircraft component The load on an aircraft component, such as the load on a landing gear leg during braking, is measured with a contactless, all-weather displacement measuring system. The system includes a control unit a controllable microwave emitter of electromagnetic radiation and ... | 03/24/2009 |
| 7487685 | Strain measurement method and device A non-contacting strain measurement method and system employs a laser light source for irradiating a test piece to provide a spectral pattern in spaced relationship from the test piece. The pattern is viewed while the test piece is placed under tension by a pluralit... | 02/10/2009 |
| 7487684 | Glass-modified stress waves for separation of ultra thin films and nanoelectronics device fabrication A device for generating a tensile force between a substrate and a coating, wherein the substrate has a thickness defined by a first side and a second side in a first axis, and the coating is applied to the first side of the substrate such that the coating and substr... | 02/10/2009 |
| 7461561 | Apparatuses and methods for monitoring stress in steel catenary risers The invention describes apparatuses and methods of monitoring fatigue, structural response, and operational limits in structural components. More particularly, the present invention relates to fatigue, response, and operational monitoring systems on steel catenary r... | 12/09/2008 |
| 7458277 | System and method for sensing torque on a rotating shaft A system and method relating to the measuring of torque in a rotating shaft is provided. An optical torque sensing system comprises a rotating shaft, wherein a sleeve of photo-elastic material overlays a portion of the shaft. A light emitting component delivers ligh... | 12/02/2008 |
| 7444882 | Material failure prediction/stress/strain detection method and system using deformation luminescence A method and apparatus are provided for detecting strain, stress, fatigue and incipient failure in materials. A detector (e.g., a photomultiplier tube) is used to detect photonic emissions from a material under test. Data based on the detected photonic emissions is ... | 11/04/2008 |
| 7440644 | Optical fibre sensor assembly An optical sensor assembly comprising a plurality of optical fibre sensor coils optically coupled by optical fibre; and an elongate support element, on which said plurality of optical fibre sensor coils and optically coupling optical fibre are mounted is disclosed. ... | 10/21/2008 |
| 7426856 | Device and method for measuring adhesion strength between two optical elements A device for measuring adhesion strength between a first optical element and a second optical element includes a force gauge, a first magnet, and a second magnet. The second magnet is fixed to the force gauge. The first magnet and the second magnet are configured fo... | 09/23/2008 |
| 7424828 | Device for detecting a cracked substrate A substrate detection system is disclosed to include a conveyer that delivers the substrates, a sensor that detects the length of each substrate being delivered by the conveyer over the top side of the sensor, and a processor that compares the detection length value... | 09/16/2008 |
| 7421905 | Optical sensor with co-located pressure and temperature sensors An optical sensor (10) that provides for concurrent pressure and temperature measurements at substantially the same location includes at least one launch fiber (22) and at least one temperature sensitive material (52) having a refractive index t... | 09/09/2008 |
| 7406877 | Uniaxial thermal and/or mechanical deformation-measuring device system and method employing a Bragg grating optical fibre Uniaxial deformation-measuring device includes a section of optical fiber equipped with a Bragg grating aligned with the measurement axis, and a test body subjected to the deformations to be measured., this device includes the fixing points for attaching the fiber t... | 08/05/2008 |
| 7403270 | Method for whole field thin film stress evaluation A novel method for whole field thin film stress evaluation is provided. Through the provided method, the whole filed thin film stress distribution for an optical thin film would be developed with a commercial interferometer, so that a whole field evaluation for the ... | 07/22/2008 |
| 7398697 | Apparatus and method for retroactively installing sensors on marine elements Sensors, including fiber optic sensors and their umbilicals, are mounted on support structures designed to be retro-fitted to in-place structures, including subsea structures. The sensor support structures are designed to monitor structure conditions, including stra... | 07/15/2008 |
| 7387032 | Methods and apparatus for measuring the viscoelastic response of vocal fold tissues and scaffolds across a frequency range In one aspect the present invention concerns methods and apparatus for measuring the mechanical properties of soft materials across a frequency regime. In particular, the present invention concerns methods and apparatus using torsional waves to measure the mechanica... | 06/17/2008 |
| 7377181 | In-situ large area optical strain measurement using an encoded dot pattern A method of measuring strain in a test specimen comprises the steps of placing a pattern of marks on a surface of the test specimen, wherein the pattern of marks includes a plurality of target marks and a plurality of sets of coded marks, using the sets of coded mar... | 05/27/2008 |
| 7372584 | Dual photo-acoustic and resistivity measurement system A measurement system for measuring aspects of a wafer combines an apparatus for performing a conductivity measurement, such as a four-point probe system, with apparatus for performing an optical measurement, such as a photoacoustic measurement system. Results are ob... | 05/13/2008 |
| 7367239 | Piezocable based sensor for measuring unsteady pressures inside a pipe A piezocable-based sensor for measuring unsteady pressures inside a pipe comprises at least one cable extending around at least a portion of a circumference of the pipe. The cable includes a first electrical conductor, a piezoelectric material disposed around the fi... | 05/06/2008 |
| 7366366 | FBG sensing system To provide a low-cost FBG sensing device having a high reliability, suitable for high-speed measurement such as vibration measurement, able to perform a remote measurement, and simple data processing, the FBG sensing device comprising one or more light sources each ... | 04/29/2008 |
