Acoustic emission frequency discrimination

Measuring and testing – Vibration – By mechanical waves

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73801, G01H 100

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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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