TY - JOUR
T1 - The effects of stress ratio on fatigue threshold
AU - Xiaopeng, Zhao
PY - 1990/3
Y1 - 1990/3
N2 - Arising from the fact that there is a reverse compression stress around a fatigue crack, it is supposed that there is an equivalent compressive high-strain area. Based upon the eigenequation of crack growth, the critical value, Kthc, of the compressive stress intensity factor is derived. The analytical expression for the change in fatigue threshold with stress ratio is derived from the similarity between the crack closure stress intensity factor and Kthc. The fatigue threshold values for some materials are calculated using the results of this paper; it is found that the theoretical values are in good agreement with the experimental results.
AB - Arising from the fact that there is a reverse compression stress around a fatigue crack, it is supposed that there is an equivalent compressive high-strain area. Based upon the eigenequation of crack growth, the critical value, Kthc, of the compressive stress intensity factor is derived. The analytical expression for the change in fatigue threshold with stress ratio is derived from the similarity between the crack closure stress intensity factor and Kthc. The fatigue threshold values for some materials are calculated using the results of this paper; it is found that the theoretical values are in good agreement with the experimental results.
KW - compressive stress intensity factor
KW - equivalent compressive high-strain area
UR - https://www.scopus.com/pages/publications/45149137244
U2 - 10.1016/0142-1123(90)90683-6
DO - 10.1016/0142-1123(90)90683-6
M3 - 文章
AN - SCOPUS:45149137244
SN - 0142-1123
VL - 12
SP - 127
EP - 130
JO - International Journal of Fatigue
JF - International Journal of Fatigue
IS - 2
ER -