Observation of acoustic emission signals from a ceramic coating layer on polyethylene terephthalate film

We observed 100-MHz-band acoustic emission (AE) signals from a 2-µm-thick ceramic coating layer on a 12-µm-thick polyethylene terephthalate (PET) film using a point focus beam (PFB) transducer. The S / N was about 11 dB. The power spectra of the signals showed peaks at 36 MHz and 70 MHz, which are a...

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Bibliographic Details
Published in:Japanese Journal of Applied Physics 1993-05, Vol.32 (5B), p.2533-2535
Main Authors: NAKASO, N, YASUJIMA, H
Format: Article
Language:English
Subjects:
Applied sciences
Exact sciences and technology
Forms of application and semi-finished materials
Polymer industry, paints, wood
Sheets and films
Technology of polymers
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Summary:We observed 100-MHz-band acoustic emission (AE) signals from a 2-µm-thick ceramic coating layer on a 12-µm-thick polyethylene terephthalate (PET) film using a point focus beam (PFB) transducer. The S / N was about 11 dB. The power spectra of the signals showed peaks at 36 MHz and 70 MHz, which are attributed to the AE energy propagating along the specimen as Lamb waves.
ISSN:0021-4922
1347-4065
DOI:10.1143/jjap.32.2533