Method for resonant measurement

Details Method for resonant measurement Method for resonant measurement

1995-03-25

1997-05-20

Oda, Christine K.

Measuring and testing

Vibration

Resonance, frequency, or amplitude study

73602, G01H 1300

Patent

active

056314230

ABSTRACT:
A method of measurement of objects by resonant ultra sound is used to determine object surface to near surface flaws. First, the frequency for expected degenerate surface acoustic wave responses is determined for one or more input frequencies and then splitting of degenerate resonant modes are observed to identify the presence of surface flaws in the object.

REFERENCES:
patent: 4428235 (1984-01-01), Sugiyama
patent: 5257544 (1993-11-01), Khuri-Yakub
patent: 5355731 (1994-10-01), Dixon

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