Defect imaging for plate-like structures using diffuse field

• 林, 高弘

  Graduate School of Engineering, Kyoto University

抄録

Defect imaging utilizing a scanning laser source (SLS) technique produces images of defects in a plate-like structure, as well as spurious images occurring because of resonances and reverberations within the specimen. This study developed defect imaging by the SLS using diffuse field concepts to reduce the intensity of spurious images, by which the energy of flexural waves excited by laser can be estimated. The experimental results in the different frequency bandwidths of excitation waves and in specimens with different attenuation proved that clearer images of defects are obtained in broadband excitation using a chirp wave and in specimens with low attenuation, which produce diffuse fields easily.

収録刊行物

• The Journal of the Acoustical Society of America

  The Journal of the Acoustical Society of America 143 (4), EL260-EL265, 2018-04

  Acoustical Society of America

キーワード

• Acoustics and Ultrasonics
• Arts and Humanities (miscellaneous)

詳細情報

• CRID: 1050001335857494912
• NII論文ID: 120006462514
• NII論文ID: 120007149436
• NII書誌ID: AA00253792
• ISSN: 00014966
• ISSN: 15208524
• DOI: 10.1121/1.5030915
• HANDLE: 2433/230946
• HANDLE: 11094/84490
• Web Site: https://pubs.aip.org/asa/jasa/article-pdf/143/4/EL260/15333270/el260_1_online.pdf
• 本文言語コード: en
• 資料種別: journal article
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