Assessment of Field Surface Treatments for Prolonging the Life of Steel Welded Joints Subjected to Fatigue Loading

Author:  M. Van Sickle and M. Ramulu
Source:  Conf Proc 2014: ICSP-12 Goslar, Germany (pgs.185-190)
Doc ID:  2014073
Year of Publication:  2014
In cases where a weld fatigue issue is discovered in the field the customer desires to have low-cost methods to increase service life. Two different surface treatment processes namely, hammer peening and rotary flap peening effects were evaluated for their ability to increase fatigue life in T-shaped fillet welds. Fatigue tests were conducted on three configurations; aswelded, welded and hammer peened, and welded and flap peened. Metallographic inspection was used to further evaluate the test samples following fatigue testing. It was found that the fatigue life improved significantly with hammer peening in comparison to rotary flap peening and have a strong potential for field applications

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