Time-Frequency Analysis of Impact Sound of Composite Materials

Naoki Jitsukawa; Takehiko Ogawa; Hajime Kanada; Kiyomi Mori

doi:10.11499/sicep.2002.0.237.0

SICE Annual Conference 2002

DOI https://doi.org/10.11499/sicep.2002.0.237.0

会議情報

主催: The Society of Instrument and Control Engineers

共催: IEEE/Industiral Electronic Society, IEEE/Robotics and Automation Society, IEEE/Control System Society

Time-Frequency Analysis of Impact Sound of Composite Materials

Naoki Jitsukawa, Takehiko Ogawa, Hajime Kanada, Kiyomi Mori

著者情報

キーワード: time-frequency analysis, impact sound, composite materials

会議録・要旨集フリー

p. 237

詳細

抄録

The method was proposed for examining the characteristics of materials from impact sound. This mnethod was designed to estimate the elasticity of materials, non-destructively and easily. It becomes difficult to estimate accurate elastic moduli of the vibration as the temperature rises, because of the noise and damping. In this study, we introduce the time-frequency analysis for estimating to estimate the accurate elastic moduli. We examine the effectiveness of the short-time Fourier transform and the wavelet transform.

責任著者(Corresponding author)

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