|
|
THERMAL FATIGUE AND FRACTURE MECHANICS ANALYSIS OF GREY CAST IRON |
GUO Chengbi;ZHOU Weisheng Dalian Institute of Technology Liaoning |
|
Cite this article:
GUO Chengbi;ZHOU Weisheng Dalian Institute of Technology Liaoning. THERMAL FATIGUE AND FRACTURE MECHANICS ANALYSIS OF GREY CAST IRON. Acta Metall Sin, 1988, 24(6): 419-425.
|
Abstract The in-phase and out-of-phase therznal fatigue, the C-P type and P-Ctype isothermal fatigue of grey cast iron were experimentally studied. The fatiguelife was evaluated analytically by using the elastic-plastic fracture mechanics method(mainly J integral). The results of experiments and calculations showed that thelife of in-phase and C-P type fatigue are longer than that of out-of-phase and P-Ctype fatigue respectively within the same strain range. This is in contrast toresults of other materials such as low carbon steel. On the other hand, the predicted life are consistent with experimental results. This suggests that J integral asa mechanics parameter for characterizing the thermal fatigue strength of grey castiron and the mechanics model and calculation method developed here are efficient.A parameter △W_t was proposed from energy aspect to characterize the capacityof crack propagation. The isothermal fatigue life is the same as the thermal fatiguelife for identical △W_t values.
|
Received: 18 June 1988
|
1 平修二,藤野宗昭,材料,1978;27:440--445 2 桑原和夫,新田明人,北村隆行.材料,1983;32:1167--1173 3 田中启介,材料,1984;33:961--972 4 大谷隆一,北村隆行.材料,1985;34:843--849 5 Westergaurd H M, J Appl Mech, 1939; 61: A49--53 6 Paris P C, Sih G C. Stress Analysis oi Cracks, ASTM STP 391. 1965: 30--81 7 平修二,大谷隆一.材料,1979,28:414--420 |
No Suggested Reading articles found! |
|
|
Viewed |
|
|
|
Full text
|
|
|
|
|
Abstract
|
|
|
|
|
Cited |
|
|
|
|
|
Shared |
|
|
|
|
|
Discussed |
|
|
|
|