ULTRASONIC TESTING BY THE USE OF PLURAL NUMBER OF PHASED ARRAY TRANSDUCERS

• HIRABAYASHI Masaya

  東日本旅客鉄道(株)

• MIKI Chitoshi

  東京工業大学 理工学研究科土木工学専攻

• TANABE Atsushi

  東京工業大学大学院 理工学研究科土木工学専攻

• SHIRAHATA Hiromi

  武蔵工業大学 工学部都市基盤工学科

Bibliographic Information

Other Title

• マルチフェイズドアレイ探触子を用いた高精度超音波探傷試験

Abstract

The ultrasonic testing has been applied to the quality control of welded joints of steel bridges. By the ultrasonic testing, one probe technique has been applied conventionally. Sometimes, however, detection of planar defects such as crack, incomplete penetration was di.cult by the one probe technique. Recently, phased array transducers have been developed. A phased array transducer consists of many small elements that can focus and change the refraction angles by controlling the excitation time of the elements. This study aims at the accurate non-destructive evaluation by the use of two phased array transducers. The testing system could reconstruct the image of side holes in a specimen of complicated shape very clearly. The testing system could detect an incomplete penetration and gave very accurate result of size estimation.

Journal

• Doboku Gakkai Ronbunshuu A

  Doboku Gakkai Ronbunshuu A 64 (1), 71-81, 2008

  Japan Society of Civil Engineers

Keywords

• nondestructive evaluation
• ultrasonic test
• multi-phased array transducer
• weld defect
• synthetic aperture focusing technique

Details

• CRID: 1390001205253924736
• NII Article ID: 130004467090
• DOI: 10.2208/jsceja.64.71
• ISSN: 18806023
• Text Lang: ja
• Data Source:
  • JaLC
  • Crossref
  • CiNii Articles
  • KAKEN
• Abstract License Flag: Disallowed