Flaw detection apparatus employing tire probes having ultrasonic

Details Flaw detection apparatus employing tire probes having ultrasonic Flaw detection apparatus employing tire probes having ultrasonic

1996-11-15

1998-07-28

Williams, Hezron E.

Measuring and testing

Vibration

By mechanical waves

73622, 73619, 73639, 73641, G01N 2906, G01N 2910, G01N 2926

Patent

active

057865353

ABSTRACT:
An apparatus for detecting flaws using supersonic waves measures a thickness of a test object or a position of a cavity inside the test object by employing a pair of ultrasonic probes. By, changing a relative position of one ultrasonic probe to that of the other ultrasonic probe, a plurality of waveform data of ultrasonic reception signals is acquired. Each of the acquired waveform data is added together. Because a surface wave component of each waveform data has a shifted phase due to a difference in arrival times, a level of the surface wave component is offset and thus minimized through addition of the waveform data.

REFERENCES:
patent: 2937522 (1960-05-01), McGaughey
patent: 4165648 (1979-08-01), Pagano
patent: 4174636 (1979-11-01), Pagano
patent: 4689995 (1987-09-01), Turbe
patent: 5404755 (1995-04-01), Olson et al.

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