Study of Ultrasonic Transmission System Using a Long Waveguide

• MURAYAMA Riichi

  Fukuoka Institute of Technology

• KOBAYASHI Masayuki

  福岡工業大学工学部知能機械工学科

• KOBAYASI Makiko

  カナダ国立研究機構材料研究所

• JEN Cheng-Kuei

  カナダ国立研究機構材料研究所

Bibliographic Information

Other Title

• 導波体を利用した遠距離超音波伝送システムの研究

Abstract

The nondestructive inspection of a high temperature structure is required to guarantee its safety. However, there are not any useful sensors for high temperature structures. Some of them cannot work at temperatures over 50°C. Another concern is that they are too expensive to use. The sensing system, which can transmit and receive an ultrasonic wave that travels a long distance using a long waveguide, has been studied. We could confirm that an optimal guided ultrasonic wave can travel more than 50cm using a thin 2mm diameter bar as the waveguide. However, we had a difficult problem of receiving a reflected ultrasonic wave from the bottom surface of a test specimen. We tried to improve the trial inspection system using an ultrasonic horn. Finally, an experiment in which the temperature of a test block was heated to about 270°C has been done and the reflected ultrasonic wave from the bottom surface was successfully detected.

Journal

• TRANSACTIONS OF THE JAPAN SOCIETY OF MECHANICAL ENGINEERS Series A

  TRANSACTIONS OF THE JAPAN SOCIETY OF MECHANICAL ENGINEERS Series A 78 (785), 116-124, 2012

  The Japan Society of Mechanical Engineers

Keywords

• Nondestructive Inspection
• High Temperature Structure
• Ultrasonicwave
• Waveguide
• Remote Sensing

Details

• CRID: 1390282679454609664
• NII Article ID: 130002050220
• DOI: 10.1299/kikaia.78.116
• ISSN: 18848338
• ISSN: 03875008
• Web Site: http://www.jstage.jst.go.jp/article/kikaia/78/785/78_785_116/_pdf
• Data Source:
  • JaLC
  • Crossref
  • CiNii Articles
  • KAKEN
• Abstract License Flag: Disallowed