Abstract
This paper describes investigations into the fabrication and repair of large welded tubular joints and how the processes used affect fatigue life. Research has been conducted to determine the benefit of local post weld heat treatment (PWHT) of the connections in terms of hardness and residual stress. The use of hole drilling and trepanning techniques for residual stresses measurements in the clusters are described. The results are compared with fitness-for-service assessments and considered in relation to the fatigue performance of the welded connections. Very substantial theoretical improvement in fatigue life can be expected after PWHT. Crown
Original language | English |
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Pages (from-to) | 320-327 |
Number of pages | 8 |
Journal | Engineering Failure Analysis |
Volume | 17 |
Issue number | 1 |
DOIs | |
Publication status | Published - Jan 2010 |
Externally published | Yes |
Keywords
- Fatigue
- Hole drilling
- Residual stress
- Welding
ASJC Scopus subject areas
- General Materials Science
- General Engineering