Effectiveness of grinding and peening techniques for fatigue life extension of welded joints
- Univ. of Trondheim (Norway)
Weld improvement methods can be used to upgrade existing structures and to repair weldments containing fatigue cracks. Some methods are suitable for use underwater to repair damaged structures. The fatigue strength properties of as-welded specimens and specimens improved by weld toe grinding, and toe grinding combined with hammer peening were investigated in constant amplitude tests in air. The material was a low carbon microalloyed steel of 360 MPa yield strength. The specimens were non-load carrying T-joints that were loaded in four point bending. The effectiveness of weld toe grinding and grinding combined with hammer peening to repair fatigue cracks was examined in tests on specimens with simulated fatigue cracks repaired by grinding followed by hammer peening.
- OSTI ID:
- 27925
- Report Number(s):
- CONF-940230--; ISBN 0-7918-1266-9
- Country of Publication:
- United States
- Language:
- English
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