腐食疲労亀裂発生寿命評価に関する一考察

概要

論文の詳細を見る
In this report, corrosion fatigue crack initiation life (N_c) was investigated based on the corrosion fatigue crack initiation tests using 13 Cr stainless steel in artificial sea water, the observation for corrosion fatigue fracture surfaces and the fracture mechanics analysis using an intrinsic crack model. And the following knowledges were obtaind. In the case without a clear stress concentration point seems to fall into a corrosion fatigue crack initiation, the meaning to define the number of cycles, at which the fatigue crack propagation rate becomes faster than the corrosion pit growth rate, so that the fatigue crack initiates from the pit and its propagation starts in earnest, as the reasonable and universal corrosion fatigue crack initiation life (N_c) has been clarified.
社団法人日本船舶海洋工学会の論文
1997-03-29