ISSN: 0090-3973
Published Online: 14 March 2008
Page Count: 9

Performance Evaluation Test of the Time-of-Flight Diffraction Technique for Welded Joints of Steel Bridges

Miki, Chitoshi
Dr. of Eng., Professor,Tokyo Institute of Technology,

Nishikawa, Kazuhiro
Director,Public Works Research Institute,

Shirahata, Hiromi
Dr. of Eng., Associate Professor,Musashi Institute of Technology,

Takahashi, Minoru
Researcher,Public Works Research Institute,

(Received 1 July 2005; accepted 7 January 2008)

Abstract

Ultrasonic testing can be applied to welded joints of steel bridges following a revision of the Japanese Specifications for Highway Bridges. The time-of-flight diffraction (TOFD) technique and the pulse echo technique are possible testing methods. However, the efficiency of the TOFD technique for steel bridges has until now not been investigated completely. A round robin test project using testing systems of several different companies was organized by the Ministry of Construction for this purpose. The performance of each participant system was evaluated and applicability of the TOFD technique was investigated.

Keywords:
nondestructive evaluation, ultrasonic testing, time-of-flight diffraction, round robin test, weld defect, steel bridge

Paper ID: JTE100108
DOI: 10.1520/JTE100108
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