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8179132 |
Method and system for integrating eddy current inspection with a coordinate measuring device
A method for integrating a measurement device for use in measuring a machine component includes providing a coordinate measuring machine (CMM) and combining eddy current (EC) capabilities and CMM...
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8125219 |
Method for determining and evaluating eddy-current displays, in particular cracks, in a test object made from an electrically conductive material
A method for determining and evaluating eddy-current displays, in particular cracks, in a test object made from an electrically conductive material is provided. The method uses the following steps,...
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8035373 |
Device and method for inspecting scratches on cell external case
It is possible to accurately and stably inspect a scratch in the vicinity of a surface of a cell external case formed by a cylindrical copper plate by using a simple device. The cell external case...
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8018228 |
High resolution and flexible eddy current array probe
Disclosed is a method and an NDT/NDI probe deploying a slit or a flexible joint of probe bending region, preferably between two rows of probe elements to allow free bending between rows of probe...
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7994780 |
System and method for inspection of parts with an eddy current probe
An inspection system for detecting a flaw in a part is provided. The inspection system includes a generally C-shaped core having an opening for receiving the part. The system also includes a driver...
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7994781 |
Eddy current sensor with concentric segments
Reference standards or articles having prescribed levels of damage are fabricated by monitoring an electrical property of the article material, mechanically loading the article, and removing the...
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7982457 |
Method and eddy current system for non-contact determination of interface resistance
The present invention is a method and an eddy current system for non-contact determination of the resistance between the current lead stripe and the coating during continuous fabrication of...
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7948233 |
Omnidirectional eddy current array probes and methods of use
Omnidirectional eddy current array probes for detecting flaws in a conductive test object generally includes semi-circular wave shaped continuous drive lines in two rows disposed in two layers that...
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7902819 |
Rivet rotating eddy current probe
An eddy current probe adapted for detecting cracks in material directly beneath a raised-head fastener is disclosed. The probe comprises an eddy current coil and a support for carrying the coil in...
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7888932 |
Surface flaw detection system to facilitate nondestructive inspection of a component and methods of assembling the same
A method of assembling an eddy current array probe to facilitate nondestructive testing of a sample is provided. The method includes positioning a plurality of differential side mount coils at...
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7876094 |
Magnetic field characterization of stresses and properties in materials
Described are methods for monitoring of stresses and other material properties. These methods use measurements of effective electrical properties, such as magnetic permeability and electrical...
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7762142 |
Integrated fastener-sensor arrangement
Characteristics of a multi-layer structure are detected, such as for detecting mechanical and/or corrosive damage of the multi-layer structure. In an example embodiment, an integrated in-situ...
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7759939 |
Sensor for locating metallic objects and method for evaluating measurement signal of such a sensor
A sensor for locating metallic objects, in particular a metal sensor for building materials, includes at least one transmission coil and at least one reception conductor loop system that are...
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7737683 |
Process and device for electromagnetically based detection of field-influencing parts in a material flow
A device for detecting parts in a material flow which influence an electromagnetic alternating field comprises an oscillator (1) and at least one transmitting coil (2) for generating an...
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7728586 |
Method and device for testing pipes in a non-destructive manner
The present invention pertains to a method for the nondestructive testing of pipes made of ferromagnetic steel by means of a stray flux, in which the pipe, which is moving in the longitudinal...
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7719258 |
Method and apparatus for current measurement using hall sensors without iron cores
A method and apparatus for current measurement using Hall sensors without iron cores, used to estimate a flowing current in an electric conducting cable are provided by the exemplary examples of...
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7671596 |
Detector for locating metallic objects with inductively coupled transmit and receive coils
A detector for locating metallic objects includes a transmit coil (116, 216) and at least two receive coils (112, 114; 212, 214), which are inductively coupled to one another; the at least two...
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7626383 |
Apparatus and method for holding a rotatable eddy-current magnetic probe, and for rotating the probe around a boundary
An RFEC excitation unit and sensor apparatus and method that facilitate detection of cracks or other anomalies within or under a surface and immediately next to an expected structure (such as a...
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7589526 |
Surface mounted sensor arrays having segmented primary windings
One of the issues with planar eddy-current sensors is the placement of the current return for the primary winding. Often the ends of the primary winding are spatially distant from one another,...
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7576534 |
System and method to forecast the electrical conductivity of anodes for aluminum production before baking
The system (10) and the method are used for forecasting the electrical conductivity of an anode (12) for aluminum production before the anode (12) is baked. In the system (10), at least one...
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7560920 |
Apparatus and method for eddy-current scanning of a surface to detect cracks and other defects
An apparatus having a plurality of coils (e.g., numerous thin-film coils formed in an array on a flex circuit), each coil acting as an excitation unit that generates an alternating excitation...
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7533575 |
Quasistatic magnetic and electric field stress/strain gages
Magnetic or electric field sensors are mounted against a material surface and used for stress, strain, and load monitoring of rotating components such as vehicle drive trains. The stationary...
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7528598 |
Fastener and fitting based sensing methods
Damage and usage conditions in the vicinity of fasteners in joined structures are nondestructively evaluated using the fasteners themselves. Sensors or sensor conductors are embedded in the...
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7528599 |
Eddy current probe
An eddy current probe moves along a longitudinal axis and includes a support structure defining a surface, the surface including a set of panels. Conductor coils are distributed across said...
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7518360 |
Hybrid wound/etched winding constructs for scanning and monitoring
Combined wound and micro-fabricated winding constructs are described for the inspection of materials and the detection and characterization of hidden features or flaws. These constructs can be...
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7489128 |
MRI protector
An MRI protector for protecting personnel and the MRI apparatus from the introduction of ferrous articles into the magnetic field of the MRI has an array of Hall effect sensors oriented to scan the...
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7411390 |
High resolution inductive sensor arrays for UXO
For the inspection of materials and the detection and characterization of hidden objects, features, or flaws sensors and sensor arrays are used to image form two-dimensional images suitable for...
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7405558 |
Steam generator mapping with reflections of eddy current signal
A method to determine deposits in a steam generator having the steps of creating a calibration standard having at least two rings of deposit material, subjecting the calibration standard to an eddy...
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7385392 |
Eddy current sensing arrays and system
An apparatus that measures electrical impedance. The apparatus includes a signal generator controlled by a master microcontroller, a plurality of data acquisition channels, each channel containing...
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7358721 |
Eddy current flaw detection sensor and method
An eddy current flaw detection sensor is provided which can detect a circumferential crack occurring at the deformed portion or peripheral portion thereof of a heat transfer tube with a high degree...
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7352176 |
Rotating concave eddy current probe
A rotating concave eddy current probe for detecting fatigue cracks hidden from view underneath the head of a raised head fastener, such as a buttonhead-type rivet, used to join together structural...
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RE40166 |
MAGNETIC NON-DESTRUCTIVE METHOD AND APPARATUS FOR MEASUREMENT OF CROSS SECTIONAL AREA AND DETECTION OF LOCAL FLAWS IN ELONGATED FERROUS OBJECTS IN RESPONSE TO LONGITUDINALLY SPACED SENSORS IN AN INTER-POLE AREA
A magnetic non-destructive method and an apparatus for measurement of cross sectional area of elongated ferrous objects such as steel wire ropes and for detecting local flaws is disclosed. A...
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7301335 |
Apparatus and method for eddy-current magnetic scanning a surface to detect sub-surface cracks around a boundary
An RFEC excitation unit and sensor apparatus and method that facilitate detection of cracks or other anomalies within or under a surface and immediately next to an expected structure (such as a...
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7256577 |
High frequency rotary eddy current probe device
An eddy current detection system configured in accordance with an example embodiment of the invention employs a high frequency rotary eddy current probe that is capable of detecting very shallow...
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7242186 |
Device for testing a test specimen for surface faults by magnetization means and by means of induction probes as measurement sensors
A device for testing a test specimen for surface faults is equipped for delivering a magnetic flux into the specimen and has induction probes measurement sensors. At least two yoke legs have...
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7242201 |
Apparatus and method for detecting state of heat exchanger tube
Provided is an apparatus for concurrently detecting a defect occurring in a heat exchanger tube and a geometric transition of the heat exchanger tube. The apparatus for detecting the state of a...
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7218102 |
Pipeline inspection apparatus and method
A apparatus for pipeline integrity monitoring comprising a magnetically permeable backing bar and at least three magnets comprising a relatively medium-strength magnet positioned at one end of the...
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7161351 |
Hidden feature characterization using a database of sensor responses
Quasistatic sensor responses may be converted into multiple model parameters to characterize hidden properties of a material. Methods of conversion use databases of responses and, in some cases,...
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7154265 |
Eddy current probe and inspection method
An eddy current (EC) probe for inspecting a component is provided. The EC probe includes a tangential drive coil configured to generate a probing field for inducing eddy currents in the component,...
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7135867 |
Method and apparatus for verifying connectivity of an instrumentation system
An instrumentation system including a plurality of sensors attached to a test piece, each of the sensors provided with an electrical signal generating device and an electrical signal measurement...
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7109702 |
Non-destructive inspection method
A non-destructive inspection includes: magnetizing a target by a first magnetostatic field (S2); shutting off the magnetostatic field (S3); measuring, at measurement points, the transient change of...
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RE39206 |
Absolute property measurement with air calibration
An instrument and method for providing accurate and reproducible measurement of absolute properties of a material under test without using conductivity or crack calibration standards. The...
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7071685 |
Induction sensor using printed circuit
A planar induction sensor for sensing of security features of documents having changing magnetic and (or) conducting properties is of a multilayer printed circuit board design. The sensor comprises...
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7049811 |
Test circuit having parallel drive segments and a plurality of sense elements
A test circuit having a drive winding with parallel conducting segments and a plurality of sense elements used for the nondestructive measurement of materials. The drive winding segments have...
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7026811 |
Methods and apparatus for eddy current inspection of metallic posts
An apparatus for inspecting a metallic post contoured in a single dimension for defects. The apparatus has a clamp having at least one jaw with a surface conforming to the contour to the metallic...
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7005851 |
Methods and apparatus for inspection utilizing pulsed eddy current
In some aspects, the present invention provides a method for estimating at least one measurement/object property of a metal object. The method includes generating a time-varying eddy current in a...
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6952095 |
Surface mounted and scanning spatially periodic eddy-current sensor arrays
Inductive sensors measure the near surface properties of conducting and magnetic material. A sensor may have primary windings with parallel extended winding segments to impose a spatially periodic...
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6946833 |
Polar coordinates sensor having an improved flux suspension system and excitation method
An improved polar coordinates sensor comprising a pot-core half having a concentric winding window surrounded by a washer-like high conductive Lenz lens. A toroidal core stack concentrically...
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6933717 |
Sensors and probes for mapping electromagnetic fields
Products are disclosed for measuring electromagnetic fields. One embodiment has at least two coplanar magneto-resistive sensors. Each magneto-resistive sensor has a sensitive axis in the plane of...
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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...
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