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ISSN: 0090-3973
Published Online: 1 May 2008
Page Count: 9

Performance Evaluation Test of the Time-of-Flight Diffraction Technique for Welded Joints of Steel Bridges
Miki Chitoshi, Nishikawa Kazuhiro, Shirahata Hiromi, Takahashi Minoru

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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