|
Match
|
Document |
Document Title |
|
|
7552810 |
Sensor and method for discriminating coins using fast fourier transform
A coin discrimination sensor having an excitation coil and two detector coils arranged to detect eddy currents in a passing coin. The excitation coil is provided a composite waveform formed by...
|
|
|
7518359 |
Inspection of non-planar parts using multifrequency eddy current with phase analysis
A non-planar part has a non-planar surface such as an edge, and may contain an anomaly such as a crack. The non-planar part is inspected using an eddy current technique. The method includes...
|
|
|
7499815 |
Machine radial stack gap generation and clearance management system and method
A system and method for readily generating radial clearance data for a radial clearance between locations on at least two parts in a rotating machine includes rendering an image of a cross section...
|
|
|
7487052 |
State detection device
An exciting unit, applies, to a fluid, a time-changing magnetic field asymmetrical to a plane (PLN). An electrode is placed on the plane in a measuring tube, and detects a resultant electromotive...
|
|
|
7480574 |
Method to characterize material using mathematical propagation models and ultrasonic signal
The invention is directed to a system and method for detecting defects in a manufactured object. These defects may include flaws, delaminations, voids, fractures, fissures, or cracks, among others....
|
|
|
7469187 |
Eddy current detection and compensation
A distortion compensation method includes determining an undisturbed phase for at least one of a first position indication signal and a second position indication signal. The method includes...
|
|
|
7467057 |
Material property estimation using non-orthogonal responsive databases
Precomputed databases of sensor responses are used to convert measurement data into properties of interest, for example, conductivity or lift-off. These databases of responses may be generated...
|
|
|
7460963 |
Device and method for health monitoring of an area of a structural element, and structure adapted for health monitoring of an area of a structural element of said structure
Device for health monitoring of a structure comprising a dielectric material of permittivity ε r , comprising a source of electromagnetic radiation, generating an electric field in the structure a...
|
|
|
7400984 |
Biomagnetic measurement apparatus
A biomagnetic measurement technique which can obtain a potential waveform corresponding to a ventricular muscle cell action potential in a non-invasive manner. The biomagnetic measurement apparatus...
|
|
|
7376519 |
Method for reducing the computation resources required for determining damage in structural health management system
A method for determining damage in a structural health monitoring system comprising a plurality of sensors distributed across a structure is disclosed. The method includes decomposing the plurality...
|
|
|
7356421 |
Precise location of buried metallic pipes and cables in the presence of signal distortion
A new approach for locating an underground line described herein remains accurate in the face of bleedover by including both amplitude and phase from at least two magnetic field strength sensors in...
|
|
|
7289913 |
Local feature characterization using quasistatic electromagnetic sensors
Local features such as cracks in materials are nondestructively characterized by measuring a response with an electromagnetic sensor and converting this response into a selected property using a...
|
|
|
7275015 |
Method and device for determining motion parameters of a conductive, profiled surface
A method and a device for determining motion parameters of a conductive, profiled surface ( 22 ) relative to a sensor ( 3 ), with the sensor ( 3 ) comprising at least one coil for generating an...
|
|
|
7275003 |
Harmonic diagnosing method for electric facility
The present invention relates to a method of diagnosing deterioration by comparing an index value which is obtained by dividing the relative harmonic content of each order of the current harmonics...
|
|
|
7243058 |
Method and circuit for operating a voice coil actuator of a mass data storage device
A circuit ( 90 ) and method are presented to accurately determine a BEMF voltage of a VCM coil ( 20 ) after termination of a driving current in a first current direction in the coil ( 20 ). The...
|
|
|
7209844 |
Magnetic crash sensor
A first magnetic field generated by a first coil operatively associated with a first portion of a vehicle interacts with at least one conductive element operatively associated with or at least a...
|
|
|
7174256 |
Magnetoinductive flowmeter and measuring method for a magnetoinductive flowmeter
The magnetoinductive flowmeter measures the flow volume of a medium traveling through a measuring tube, with a magnet that serves to generate a magnetic field permeating the measuring tube that has...
|
|
|
7110891 |
Degaussing vulnerability display program
Magnetic signature measurements are taken at various points corresponding to an original water depth beneath a ship. A computer processor receives and processes (i) this group of measured magnetic...
|
|
|
7089130 |
Electric/magnetic field analysis method using finite difference time domain, material descriptive method in electric/magnetic analysis, electric/magnetic analysis device, analysis data generation device and storage medium
Two centerlines each of which goes through the center of a surface and is parallel to one of the coordinate axes are considered for each surface constituting a cell. If one of the centerlines...
|
|
|
7085656 |
Method for suppressing edge artifacts in magnetic microscopy
A technique for eliminating edge artifacts in magnetic microscopy includes the steps of scanning a SQUID over an object under study to acquire values of magnetic fields produced by currents running...
|
|
|
7038423 |
Apparatus and method for ride through for AC induction motors
A method and an apparatus for controlling ride through of an induction motor by detecting a power loss from a power supply connected to the induction motor, disconnecting the induction motor from...
|
|
|
6962087 |
Electromagnetic flow meter
There is described herein a method of obtaining a measure of flow from an electromagnetic flow meter having at least one field generating coil and potential sensing electrodes. A composite...
|
|
|
6959267 |
Method of inspecting a heat exchanger and computer program product for facilitating same
A method of inspecting a heat exchanger including a plurality of tubes having ends fixed in a tubesheet includes the steps of: establishing a baseline for each tube of its location in the tubesheet...
|
|
|
6933718 |
Quantification method and system for corrosion and damage assessment
The present invention provides a method for the direct measurement and quantification of the material volume loss on and beneath a first surface of a substrate and thus provides an accurate...
|
|
|
6907358 |
Eddy current inspection method
A specimen is mounted in a multiaxis machine. An eddy current probe is also mounted in the machine for multiaxis movement relative to the specimen. The probe is aligned in situ with a target in the...
|
|
|
6885948 |
Data management of pipeline datasets
An apparatus for applying a method for managing the integration of multiple pipeline datasets into a combined dataset or superset otherwise known as an asset survey. As each dataset is integrated...
|
|
|
6880379 |
Method and device for detecting damage in materials or objects
In a method of detecting damage in materials or objects ( 4 ) the material or object is physically influenced to produce a physical change of the material or object inducing transient slow dynamics...
|
|
|
6868363 |
Methods and systems for calculating steam turbine radial clearance
A method and a system for determining radial clearances in a rotating machine are provided. The rotating machine includes at least one shell, at least one rotor, and at least one stationary...
|
|
|
6865494 |
Method and apparatus for noise tomography
The subject invention pertains to an imaging technique and apparatus which can utilize an array of RF probes to measure the non-resonant thermal noise which is produced within a sample, such as a...
|
|
|
6862538 |
Induction motor module and motor incorporating same
A system and method for establishing estimated values of a plurality of electrical parameters of a motor. The plurality of electrical parameters may be established from stator resistance data and...
|
|
|
6847901 |
Electromagnetic flowmeter
An electromagnetic flowmeter includes a exciting coil, exciting section, and arithmetic processing section. The exciting coil applies a magnetic field to a fluid flowing in a pipe line. The...
|
|
|
6845330 |
Electromagnetic flowmeter
An electromagnetic flowmeter includes a coil, exciting section, noise eliminating section, and arithmetic processing section. The coil applies a magnetic field to a fluid flowing in a pipe line....
|
|
|
6834238 |
Method for identifying optical contrast enhancing agents
Optical detection techniques for the assessment of the physiological state, health and/or viability of biological materials are provided. Biological materials which may be examined using such...
|
|
|
6826489 |
Fault classification in a plasma process chamber
A method of fault classification in a plasma process chamber powered by an RF source includes initially running a plurality of different baseline plasma processes on the chamber. For each baseline...
|
|
|
6823269 |
Eddy current data union
A method of synthesizing nondestructive examination data of a component including the steps of generating nondestructive examination data of the component in the field and separately generating...
|
|
|
6820020 |
Method of determining magnitude of sensing current for electromagnetic transducer
A first resistance value of an electromagnetic transducer is calculated based on an examination current of a first current value. A second resistance value of the electromagnetic transducer is...
|
|
|
6816794 |
Apparatus and method for detecting contamination of object by a metal
The present invention provides apparatus for interactively observing metal or other electrolyte contamination of a product against a reference datum or calibration signal for that product; and...
|
|
|
6799125 |
Method and system for on-line monitoring of bearing insulation in an electrical generator
The present invention monitors an electrical generator ( 10 ) to provide an indication of a problem in the generator's bearing insulation ( 26 ), such as insulation damage or insulation bridging,...
|
|
|
6789043 |
Magnetic sensor system for fast-response, high resolution, high accuracy, three-dimensional position measurements
The position, orientation, velocity and acceleration of remote sensors is determined using magnetic fields. Multiple, arbitrarily oriented magnetic field transmitters are placed in one reference...
|
|
|
6734670 |
Determining a surface profile of an object
A method of determining a surface profile of an electrically conductive object, using a probe having a transmitter adapted for inducing transient eddy currents in the object, and a receiver which...
|
|
|
6718267 |
Monitoring the corrosion of pipelines by evaluting the noise in data signals transmitted via the pipeline
When a pipeline is used as a medium for data transmission using a VLP or ELF Electro-magnetic signal the presence of corrosion effects on the pipeline lead to noise signals appearing in the...
|
|
|
6707296 |
Method for detecting cracks in electrically conducting material
Method of detecting cracks in an object of an electrically conducting material that is covered by a non-conductive layer using a probe comprising a transmitter coil for inducing eddy currents in...
|
|
|
6636827 |
Foreign-matter detector and foreign-matter detecting system
A foreign-matter detector for detecting foreign matter contained in an article P transported between a transmitter ( 17 ) and a receiver ( 18 ). The detector ( 1 ) includes a signal extractor ( 2 )...
|
|
|
6633820 |
System for assessing metal deterioration on maritime vessels
This invention involves an apparatus for on-site testing and inspecting of metal structures and their deterioration. The NDT and hands free computer are both worn by the inspector to give him or...
|
|
|
6593737 |
Method for measuring the wall thickness of an electrically conductive object
Measuring the wall thickness of an electrically conductive object using a probe comprising a transmitter coil, a first receiver and a second receiver, which method comprises arranging the probe...
|
|
|
6591200 |
Method and system for performance testing of rotating machines
A method and system for dynamic testing of loaded or unloaded electrical rotating electric motors, wherein a dynamic speed-time characteristic of the electric motor is determined during...
|
|
|
6573712 |
Non-destructive inspection device
In a non-destructive inspection device of the present invention which detects in a non-destructive manner a defect of a member to be inspected, based on a change in magnetic fluxes due to eddy...
|
|
|
6566871 |
Process and device for testing a workpiece by means of eddy currents
The invention relates to a process for testing of a workpiece by means of eddy currents induced by a field coil in the workpiece and from which a measurement signal is obtained by means of a...
|
|
|
6564167 |
Method of determining a position in dependence on a measurement signal of a position sensor
The position sensor has a sensor element and a transmitter part which can be displaced between a first end position and a second end position. The measurement signal passes through an extreme value...
|
|
|
6563309 |
Use of eddy current to non-destructively measure crack depth
A method and apparatus for non-destructively measuring the depth of a crack with precision and accuracy in a workpiece using an eddy current process. The method involves empirically creating a...
|