DocumentCode
2701241
Title
Bispectrum analysis for impact sound of composite materials
Author
Ogawa, Takehiko ; Kanada, Hajime ; Mori, Kiyomi ; Sakata, Masaru
Author_Institution
Dept. of Electron. & Syst., Takushoku Univ., Tokyo, Japan
fYear
2000
fDate
2000
Firstpage
31
Lastpage
34
Abstract
A method to estimate the elastic moduli of a composite material by the sound that occurs at an impact on the composite material was proposed in the field of the material engineering. To estimate elastic moduli from the impact sound, we have to estimate the natural frequencies of the vibration of the material from the obtained time-series waveform. In this report, we show that the natural frequencies of the vibration of the composite material can be estimated by the bispectrum analysis more clearly than the power spectrum analysis
Keywords
acoustic emission testing; composite materials; elastic moduli measurement; impact testing; spectral analysis; time series; bispectrum analysis; composite materials; elastic modulus estimation; impact sound; material engineering; power spectrum analysis; time-series waveform; vibration natural frequencies estimation; Composite materials;
fLanguage
English
Publisher
ieee
Conference_Titel
SICE 2000. Proceedings of the 39th SICE Annual Conference. International Session Papers
Conference_Location
Iizuka
Print_ISBN
0-7803-9805-X
Type
conf
DOI
10.1109/SICE.2000.889648
Filename
889648
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