Measuring and testing – Vibration – By mechanical waves
Patent
1986-06-12
1988-04-19
Chapman, John
Measuring and testing
Vibration
By mechanical waves
73801, G01H 100
Patent
active
047381370
ABSTRACT:
In acoustic emission non-destructive testing, broadband frequency noise is distinguished from narrow band acoustic emission signals, wherein the latter are valid events indicative of structural flaws in the material being examined. This is accomplished by separating out those signals which contain frequency components both within and beyond (either above or below) the range of valid acoustic emission events.
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Graham Lloyd J.
Sugg Frank E.
Chapman John
Fein Edward K.
Manning John R.
Schlorff Russell E.
The United States of America as represented by the Administrator
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