FATIGUE CRACK INITIATION PREDICTIONS FOR NAVAL PLATFORM WELDMENTS

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Authors
  1. Porter, J.F.
  2. Yee, R.
Corporate Authors
Defence Research Establishment Atlantic, Dartmouth NS (CAN)
Abstract
While fatigue in metals has been extensively studied for over 150 years, fatigue crack initiation and propagation in marine platforms remains one of the most common and serious challenges facing the maintainers and operators of these structures. An inability to satisfactorily quantify all of the factors which contribute to the formation of cracks has led to the creation of design methods for fatigue avoidance which are conservative in many situations and inaccurate in others. This paper reviews the current popular fatigue control methodologies and outlines recent experimental efforts to better understand the role of residential strain on the formation of fatigue cracks in complex welded joints. The fatigue control methodologies have been applied to the experimental weld joint configurations to predict initiation lives for comparison with the experimental results.
Report Number
DREA-NAMT-95-6-PAP-4 — CONTAINED IN 99-00779
Date of publication
30 May 1995
Number of Pages
31
DSTKIM No
99-00809
CANDIS No
510373
Format(s):
Hardcopy;Document Image stored on Optical Disk

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