Zhang Hongxue, Jiang Honggen, Yang Wangyue, Xie Xishan, Chen Guoliang, Zhao Yucai, Zhu Jianzhong. The Investigation of Crack Crowth Rate under the Condition of Fatigue-Creep Interaction for GH132 Disc[J]. Chinese Journal of Engineering, 1987, 9(3): 44-52. DOI: 10.13374/j.issn1001-053x.1987.03.027
Citation: Zhang Hongxue, Jiang Honggen, Yang Wangyue, Xie Xishan, Chen Guoliang, Zhao Yucai, Zhu Jianzhong. The Investigation of Crack Crowth Rate under the Condition of Fatigue-Creep Interaction for GH132 Disc[J]. Chinese Journal of Engineering, 1987, 9(3): 44-52. DOI: 10.13374/j.issn1001-053x.1987.03.027
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The Investigation of Crack Crowth Rate under the Condition of Fatigue-Creep Interaction for GH132 Disc

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  • The crack growth rates under the condition of fatigue-creep interaction at 650℃ were measured. The results of mesurement indicated that the crack growth rate was controlled by both Kmax and AK. In this case the effective stress indensity factor (Keq) is a suitable parametes describing the behaviour of crack propagation.Keq is equal to the sum of kmax and α'△k, Where α' was assumed as a parameter represented the effect of crack closure, and α' is a function of crack length.
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