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Punch stretching process monitoring using acoustic emission signal analysis. II - Application of frequency domain deconvolutionThe coloring effect on the acoustic emission signal due to the frequency response of the data acquisition/processing instrumentation may bias the interpretation of AE signal characteristics. In this paper, a frequency domain deconvolution technique, which involves the identification of the instrumentation transfer functions and multiplication of the AE signal spectrum by the inverse of these system functions, has been carried out. In this way, the change in AE signal characteristics can be better interpreted as the result of the change in only the states of the process. Punch stretching process was used as an example to demonstrate the application of the technique. Results showed that, through the deconvolution, the frequency characteristics of AE signals generated during the stretching became more distinctive and can be more effectively used as tools for process monitoring.
Document ID
19870056754
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Liang, Steven Y.
(California Univ. Berkeley, CA, United States)
Dornfeld, David A.
(California, University Berkeley, United States)
Nickerson, Jackson A.
(California Institute of Technology Jet Propulsion Laboratory, Pasadena, United States)
Date Acquired
August 13, 2013
Publication Date
March 1, 1987
Publication Information
Publication: Journal of Acoustic Emission
Volume: 6
ISSN: 0730-0050
Subject Category
Quality Assurance And Reliability
Accession Number
87A44028
Funding Number(s)
CONTRACT_GRANT: NSF DMC-85-08412
Distribution Limits
Public
Copyright
Other

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