Document Type

Patent

Publication Date

10-31-1995

Abstract

Techniques for providing an ultrasonic flaw detection system are disclosed. A continuous wave of wide-band direct-sequence spread-spectrum signals continuously drives one or more transmitting transducers, thereby flooding a test object with coded ultrasound. In operation, the ultrasonic testing system is capable of reliably and predictably transmitting a high degree of ultrasonic energy (power) to a test object. Code division multiplexing correlation techniques using a variably delayed replica of a selected segment of the DSSS signal are applied to the signals received by the receiving transducers to generate a signature representing the signal returned from all reflectors within the test object.

Patent Number

US 5,461,921

ISURF Reference Number

1514

Assignee

Iowa State University Research Foundation, Inc.,

Application Number

US 08/091,179

Date Filed

7-13-1993

Language

en

File Format

application/pdf

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