대한기계학회논문집 (Transactions of the Korean Society of Mechanical Engineers)
- 제6권3호
- /
- Pages.197-203
- /
- 1982
- /
- 1225-5963(pISSN)
DOI QR Code
微小格子 를 利용한 304스테인레스鋼 의 피勞 크랙 進展擧動 에 관한 硏究
Fatigue-crack propagation behavior of 304 stainless steel by Moire grating
초록
The fatigue crack propagation behavior or non-heat-treatment and thermally aged type 304 stainless steel was investigated on the basis of linear elastic fracture mechanics. This Study was concentrated on the relations between the crack propagation rate and the stress intensity factor range. The following results are obtained : The precision measurement and observation of fatigue crack propagation behavior is studied with moire grating. The effect of thermally aged type 304 stainless steel is investigated under small load. In the equation da/dN=c(.DELTA. k)/SUP m/, factor m of thermally aged steel is a little higher than non-heat-treatmented steel and its limit is m=1.35-4.2.
키워드