Journal of Mechanical Science and Technology

The Korean Society of Mechanical Engineers (대한기계학회)
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J and CTOD Estimation for Homogeneous and Bi-Material Fracture Toughness Testing Specimens

  • Published : 2001.08.01
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Abstract

This paper proposes J and CTOD estimation schemes applied to fracture toughness testing, covering typical homogeneous and bi-material specimens. Recommendations are based on the plastic limit analysis (either slip line field or finite element limit analyses), assuming the rigid plastic material behavior. The main outcome of the present study is that the J and CTOD estimation schemes (both codified and non-codified), recommended for homogeneous specimens, can be equally used for bi-material specimens with interface cracks. The effect of yield strength mismatch in bi-material specimens on the J-integral CTOD is discussed.

Keywords

References

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