ひずみ干渉法による疲労き裂開閉口点の測定 : ひずみ干渉法の実用性について

概要

論文の詳細を見る
The measurement of fatigue crack tip opening stress σ_<op> and closing stress σ_<cl> occurring in actual equipment is generally very difficult. This is the reason why the range of effective stress intensity factor is not sufficiently applied to the fatigue crack propagation behavior of actual equipment. In this study, the measurement of σ_<op> and σ_<cl> in large size specimen is carried out by means of the strain interference method and the crack opening and closing points of long crack are successfully measured. Futhermore, σ_<op> and σ_<cl> in a specimen subjected to a rotating bending stress is measured. From these experimental results, the strain interference method is expected to be applicable to the measurement of σ_<op> and σ_<cl> in actual equipment.
一般社団法人日本機械学会の論文
1991-06-25