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Evaluation of Stress Intensity Factor for A Partially Patched Crack Using an Approximate Weight Function  

Kim, Jong-Ho (Force Measurement ＆ Evaluation Lab., Korea Research Institute of Standards and Science(KRISS))
Hong, Seong-Gu (Department of Mechanical Engineering, Korea Advanced Institute of Science and Technology)
Lee, Soon-Bok (Department of Mechanical Engineering, Korea Advanced Institute of Science and Technology)
Publication Information
Journal of Mechanical Science and Technology / v.17, no.11, 2003 , pp. 1659-1664 More about this Journal
Abstract
A cracked plate with a patch bonded on one side was treated with a crack-bridging model using weight function: assuming continuous distribution of springs acting between th crack surfaces, the stress intensity factor of the patched crack was numerically obtained. Especially in the case of a patched crack subjected to residual non-uniform stress, the stress intensity factor was easily with the corresponding approximate weight function. This paper presented the stress intensity factors for a crack partially patched within a finite plate or a patched crack initiated from a notch.
Keywords
Crack-bridging Model; Stress Intensity Factor; Weight Function; Patched Crack; Notch;
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