Fatigue Crack Detection and Sizing in Welded Steel Structures
نویسنده
چکیده
The paper gives an outline of the non-destructive evaluation (NDE) methods currently being pursued at the Admiralty Marine Technology Establishment, Dunfermline, Scotland. The methods are being used to locate and characterise fatigue cracks in high yield strength welded steel structures. The techniques have been applied principally to large fatigue models (5' and 9' diameter) as part of a comprehensive fatigue programme, with back-up work on large T-butt welded "type test" specimens. Results are presented which illustrate the progress made with each technique in detecting and sizing fatigue cracks in welded structures. An indication of the accuracy and reproducibility is given with particular reference to ultrasonic diffraction and ACPD techniques.
منابع مشابه
Detection of Fatigue Cracks at Weld Toes by Crack Detection Paint and Surface SH WaveThis Paper was Originally Published in Japanese in JOURNAL OF JSNDI 54 (2005) 503--508
A crack detection (CD) paint was applied to weld lines of a transverse rib welded joint specimen of a rolled steel for welded structures, and the effects of the paint on visual detection of fatigue cracks were evaluated by performing a fatigue test. Remarkable color development was observed in the CD paint when fatigue cracks propagated along the weld toe lines. At intervals in the fatigue test...
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