Fatigue Crack Inspection, Weld Repair and Post-Repair Fatigue Behavior of Stainless Steel Welded Components

Cheng, Xiaohua; Fisher, John W.; Yen, Ben T.; Ma, Zuozhang

doi:10.2749/222137804796302888

Cited by 2 publications

(1 citation statement)

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“…However, except for very few investigations [10], [11], all of the existing studies are focusing so far on improving the fatigue resistance of new manufactured/fabricated welded details. Based on this situation a small experimental program was initiated in the frame of a diploma thesis [12] in order to quantify the effectiveness of UIT as a strengthening measure to extend to the life time of partially damaged details typical in existing structures.…”

Section: Scopementioning

confidence: 99%

Rehabilitation of Welded Joints by Ultrasonic Impact Treatment (UIT)

Günther¹,

Kuhlmann²,

Dürr³

2005

IABSE Symposium, Lisbon 2005: Structures and Extreme Events

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SummaryDue to the increasing traffic and life loading fatigue becomes of high relevance in order to maintain the integrity of existing steel bridge structures. Poor construction details which used to be regarded as less important when applied e.g. to road bridges are nowadays often the starting point of fatigue cracks. Repair and strengthening of welded details are thus of great importance in order to extend the life time and safety of existing bridges. For welded details under fatigue loading one effective possibility to do this is the application of local post-weld treatment methods. This paper presents the application of a relatively new post-weld treatment method called "Ultrasonic Impact Treatment" (UIT). The paper summarizes the results obtained on a series of experimental fatigue tests where UIT has been applied in order to extend the life time of partially damaged non load carrying fillet welded joints.

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Section: Scopementioning

confidence: 99%