Theoretical and Experimental Investigations of Transmission Coefficients of Longitudinal Waves through Metal Plates Immersed in Air for Uses of Air Coupled Ultrasounds

• Nishino Hideo

  Institute of Technology and Science, The University of Tokushima

• Masuda Shuichi

  Institute of Technology and Science, The University of Tokushima

• Yoshida Kenichi

  Institute of Technology and Science, The University of Tokushima

• Takahashi Masakazu

  Japan Probe Co., Ltd.

• Hoshino Hidekazu

  Japan Probe Co., Ltd.

• Ogura Yukio

  Japan Probe Co., Ltd.

• Kitagawa Hideaki

  Research Laboratory, Kyusyu Electric Power Co., Inc.

• Kusumoto Junichi

  Research Laboratory, Kyusyu Electric Power Co., Inc.

• Kanaya Akihiro

  Research Laboratory, Kyusyu Electric Power Co., Inc.

抄録

Theoretical and experimental investigations of transmission coefficients of longitudinal waves through metal plates immersed in air have been carried out for noncontact and nondestructive testing (NDT) of metal plates. Transmission coefficients through metal plates in water and through polymer plates in air have also been shown for comparisons. Theoretical relations between the transmission coefficients and the Lamb wave dispersions were described. It was confirmed that the transmission coefficients took high values when the Lamb waves were generated without exception. Quantitative evaluations for the transmission coefficients were investigated for the use of the air-coupled ultrasounds. The experimental verifications were carried out using 1-, 3-, and 5-mm-thick aluminum plates. The experimental results of the transmission coefficients were in fairly good agreement with the theoretical predictions.

収録刊行物

• MATERIALS TRANSACTIONS

  MATERIALS TRANSACTIONS 49 (12), 2861-2867, 2008

  公益社団法人 日本金属学会

キーワード

• nondestructive inspection
• ultrasonic testing
• air-coupled ultrasound
• metal plate
• lamb wave

詳細情報

• CRID: 1390282679227682176
• NII論文ID: 10024404164
• NII論文ID: 130004453899
• NII書誌ID: AA1151294X
• DOI: 10.2320/matertrans.mra2008270
• ISSN: 13475320
• ISSN: 13459678
• NDL書誌ID: 9728852
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I9728852
• Web Site: https://www.jstage.jst.go.jp/article/matertrans/49/12/49_MRA2008270/_pdf
• 本文言語コード: en
• データソース種別:
  • JaLC
  • NDL
  • Crossref
  • CiNii Articles
• 抄録ライセンスフラグ: 使用不可