Eddy current nondestructive testing device for measuring variable characteristics of a sample utilizing Walsh functions

Patent · 01 January 1978

OSTI ID:863053

Libby, Hugo L ^[1]; Hildebrand, Bernard P ^[1]

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1. Richland, WA

An eddy current testing device for measuring variable characteristics of a sample generates a signal which varies with variations in such characteristics. A signal expander samples at least a portion of this generated signal and expands the sampled signal on a selected basis of square waves or Walsh functions to produce a plurality of signal components representative of the sampled signal. A network combines these components to provide a display of at least one of the characteristics of the sample.

• Research Organization: BATTELLE MEMORIAL INSTITUTE
• DOE Contract Number: AC06-76RL01830
• Assignee: Battelle Memorial Institute (Richland, WA)
• Patent Number(s): US 4084136
• OSTI ID: 863053
• Country of Publication: United States
• Language: English

Related Subjects

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