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Failure assessment diagram under biaxial loading

Shao, Q. / Tan, D.M.

AbstractThe Failure Assessment Diagram (FAD) for evaluating the safety margin of cracked structure under biaxial loading is explored. The $J- integral$ fracture parameters, i.e. $J e$ (elastic) and $J ep$ (elastic-plastic) are calculated by the finite element method and the instantaneous load of initiation of crack growth is examined by the method of local D.C. electric potential measurement. With the research work mentioned above, several failure assessment methods are compared in biaxial stress states. The modified methods of failure assessment of CEGB's R6 and EPRI's Engineering Approach for biaxial loading have been proposed respectively in the present work. The experimental results reveal that the $J- integals$ based on the measured instantaneous load of initiation of crack growth, $J i$ , under different ratio of biaxial load are, in general, almost identically equal.

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Failure assessment diagram under biaxial loading

Shao, Q. / Tan, D.M.

AbstractThe Failure Assessment Diagram (FAD) for evaluating the safety margin of cracked structure under biaxial loading is explored. The $J- integral$ fracture parameters, i.e. $J e$ (elastic) and $J ep$ (elastic-plastic) are calculated by the finite element method and the instantaneous load of initiation of crack growth is examined by the method of local D.C. electric potential measurement. With the research work mentioned above, several failure assessment methods are compared in biaxial stress states. The modified methods of failure assessment of CEGB's R6 and EPRI's Engineering Approach for biaxial loading have been proposed respectively in the present work. The experimental results reveal that the $J- integals$ based on the measured instantaneous load of initiation of crack growth, $J i$ , under different ratio of biaxial load are, in general, almost identically equal.

Failure assessment diagram under biaxial loading

Shao, Q. / Tan, D.M.

AbstractThe Failure Assessment Diagram (FAD) for evaluating the safety margin of cracked structure under biaxial loading is explored. The $J- integral$ fracture parameters, i.e. $J e$ (elastic) and $J ep$ (elastic-plastic) are calculated by the finite element method and the instantaneous load of initiation of crack growth is examined by the method of local D.C. electric potential measurement. With the research work mentioned above, several failure assessment methods are compared in biaxial stress states. The modified methods of failure assessment of CEGB's R6 and EPRI's Engineering Approach for biaxial loading have been proposed respectively in the present work. The experimental results reveal that the $J- integals$ based on the measured instantaneous load of initiation of crack growth, $J i$ , under different ratio of biaxial load are, in general, almost identically equal.

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Title:

Failure assessment diagram under biaxial loading

Contributors:

Shao, Q. (author) / Tan, D.M. (author)

Published in:

Structural Safety ; 12 ; 113-121

Publication date:

1993-01-01

Size:

9 pages

ISSN:

DOI:

https://doi.org/10.1016/0167-4730(93)90032-V

Type of media:

Article (Journal)

Type of material:

Electronic Resource

Language:

English

Keywords:

fracture , biaxial , failure assessment

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