Generation of low-frequency components in ultrasonic waves penetrating the interface between contacting solids

H. Tanaka, T. Okamoto, K. Kurihara, T. Sugiura

研究成果: Conference contribution

抄録

It is difficult to detect a closed crack by conventional ultrasonic testing. However, nonlinear ultrasonics may be useful for detection of a closed crack in structures. This study experimentally examined propagation of ultrasonic waves through the interface between contacting solids. We simulated a closed crack by compressing two aluminum blocks. The input frequency was changed in the range of 1.0-2.0MHz and two different types of surface roughness of specimens were used. As a result, generation of low-frequency components at about 600 kHz was found regardless of the input frequency. Such a feature of low-frequency components is different from that of subharmonics. Additionally, this phenomenon was not confirmed in specimens with smoother surface. Therefore, surface roughness can be one of important factors of generating low-frequency components. The results suggest that these low-frequency components can be useful for detecting a closed crack.

本文言語English
ホスト出版物のタイトル40th Annual Review of Progress in Quantitative Nondestructive Evaluation - Incorporating the 10th International Conference on Barkhausen Noise and Micromagnetic Testing
出版社American Institute of Physics Inc.
ページ1745-1749
ページ数5
ISBN(印刷版)9780735412118
DOI
出版ステータスPublished - 2014
イベント40th Annual Review of Progress in Quantitative Nondestructive Evaluation, QNDE 2013, Incorporating the 10th International Conference on Barkhausen and Micro-Magnetics, ICBM 2013 - Baltimore, MD, United States
継続期間: 2013 7月 212013 7月 26

出版物シリーズ

名前AIP Conference Proceedings
1581 33
ISSN(印刷版)0094-243X
ISSN(電子版)1551-7616

Other

Other40th Annual Review of Progress in Quantitative Nondestructive Evaluation, QNDE 2013, Incorporating the 10th International Conference on Barkhausen and Micro-Magnetics, ICBM 2013
国/地域United States
CityBaltimore, MD
Period13/7/2113/7/26

ASJC Scopus subject areas

  • 物理学および天文学一般

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