Matches 1 - 11 out of 11
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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...
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...
7248041 Device and method for measuring transient magnetic performance  
A device for evaluating magnetic component performance and methods of evaluating transient magnetic performance of such components are disclosed. Magnetic flux capacity and/or energy loss of a...
7188532 Self-monitoring metals, alloys and materials  
Observability of damage precursor, damage and usage states, or event occurrence may be enhanced by modifying component materials to include self-monitoring materials or by processing test material...
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,...
7106055 Fabrication of samples having predetermined material conditions  
Fabrication of samples having material conditions or damage representative of actual components inspected by nondestructive testing involves sensors placed near or mounted on the material surface,...
7095224 Process control and damage monitoring  
A process control method is described which uses measurements from magnetic field sensors to monitor the condition of material, such as from a heat treatment process. The sensors can be single...
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...
6995557 High resolution inductive sensor arrays for material and defect characterization of welds  
A sensor that characterizes welds in materials. The sensor includes a meandering drive winding with at least three extended portions and at least one sensing element placed between an adjacent pair...
6992482 Magnetic field sensor having a switchable drive current spatial distribution  
Magnetic field sensor probes are disclosed which comprise primary or drive windings having a plurality of current carrying segments. The relative magnitude and direction of current in each segment...
6727691 High resolution inductive sensor arrays for material and defect characterization of welds  
A sensor that characterizes welds in materials. The sensor includes a meandering drive winding with at least three extended portions and at least one sensing element placed between an adjacent pair...
Matches 1 - 11 out of 11