Insulation Debond Detection

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Insulation Debond Detection

Insulation Debond Detection

Johnston, G. D. / Coleman, A. D. / Portwood, J. N. / Saunders, J. M. / Porter, A. J.

Load-cell and acoustic responses indicate bonding condition nondestructively. Signal recorded by load cell direct and instantaneous measure of local stiffness of material at point of impact. Separate and distinctly different measurement that sensed by microphone. Spectrum analysis of pulse obtained from debonded point will only show frequencies below 425 Hz because insulation alone does not have stiffness to support energy at higher frequencies.

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Title :

Insulation Debond Detection

Contributors:

Johnston, G. D. (author) / Coleman, A. D. (author) / Portwood, J. N. (author) / Saunders, J. M. (author) / Porter, A. J. (author)

Published in:

NASA Tech Briefs ; 8 , 4

Publication date :

1985-04-01

ISSN :

Type of media :

Miscellaneous

Type of material :

No indication

Language :

English

Keywords :

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