Detection of low-frequency components in ultrasonic waves transmitted through contact solids

Yuji Kato, Hirotaka Tanaka, Toshihiko Sugiura

研究成果: Conference contribution

抄録

In internal inspection, it is important to detect closed cracks. One promising method for detecting closed cracks is use of nonlinear ultrasonic waves including superharmonics or subharmonics. However, there have been few reports clarifying a generation mechanism of subharmonics so far. We observed some low-frequency components different from subharmonics in our previous experiments. In this research, we attempted to reveal a generation mechanism of these low-frequency components by experiments and numerical analyses. In experiments limiting the route of wave propagation in two ways, oblique and vertical to contact surfaces, lower-frequency components were found only in the case of the oblique route. These experimental results agree with numerical results obtained by the finite element method. In conclusion, ultrasonic waves propagated through the interface between contacting solids can travel obliquely and, as a result, the waves can contain low-frequency components because of the directivity of the wave.

本文言語English
ホスト出版物のタイトル2015 IEEE International Ultrasonics Symposium, IUS 2015
出版社Institute of Electrical and Electronics Engineers Inc.
ISBN(印刷版)9781479981823
DOI
出版ステータスPublished - 2015 11 13
イベントIEEE International Ultrasonics Symposium, IUS 2015 - Taipei, Taiwan, Province of China
継続期間: 2015 10 212015 10 24

Other

OtherIEEE International Ultrasonics Symposium, IUS 2015
CountryTaiwan, Province of China
CityTaipei
Period15/10/2115/10/24

ASJC Scopus subject areas

  • Acoustics and Ultrasonics

フィンガープリント 「Detection of low-frequency components in ultrasonic waves transmitted through contact solids」の研究トピックを掘り下げます。これらがまとまってユニークなフィンガープリントを構成します。

引用スタイル