2024-03-28T18:16:26Z
https://nagoya.repo.nii.ac.jp/oai
oai:nagoya.repo.nii.ac.jp:00005653
2023-01-16T03:50:21Z
312:313:314
き裂エネルギ密度による安定成長き裂の破壊抵抗評価 (第5報, き裂先端開口変位, 開口角による評価との比較)
An Evaluation of the Fracture Resistance of a Stably Growing Crack by Crack Energy Density (5th Report, Comparison with the Fracture Resistance Evaluated by CTOD and CTOA)
渡辺, 勝彦
Watanabe, Katsuhiko
畔上, 秀幸
Azegami, Hideyuki
平野, 八州男
Hirano, Yasuo
open access
日本機械学会
Fracture
Fracture Resistance
Thin Plate
Stable Crack Growth
CTOD
CTOA
Crack Energy Density
In the previous reports, an experimental method to evaluate the fracture resistance of a stably growing crack by crack energy density was proposed, and its applicability and superiority were shown through the applications of the method to the stable crack growth problems of thin plates and the comparison with the fracture resistance evaluated by the J-integral. In this report, experiments on the stable growth fracture of thin plates are carried out, the fracture resistances evaluated by CTOD and CTOA are obtained, and they are compared with prior fracture resistances evaluated by crack energy density. The results are as follows: (1) Both show a similar tendency in their variations with crack extensions as was expected theoretically. (2) In comparison with the latter, the former are scattered because of the difficulty of the measurement of local deformation around a crack tip. Therefore, the proposed method is superior to the method based on CTOD and CTOA in the ease of the measurement of these quantities necessary for evaluation. The validity of the instability criterion on crack extension proposed before is also shown in the Appendix.
日本機械学会
1986-11
jpn
journal article
VoR
http://hdl.handle.net/2237/7259
https://nagoya.repo.nii.ac.jp/records/5653
0387-5008
日本機械学会論文集 A編
52
483
2493
2499
https://nagoya.repo.nii.ac.jp/record/5653/files/JSME-A52-2493.pdf
application/pdf
1.2 MB
2018-02-19