【摘要】 在发动机受热件高频感应式加速热疲劳台架试验研究的基础上 ,综合连续损伤力学及热强度、热疲劳研究的一些成果 ,推导了试验控制参数与零件试验寿命间的趋势预测模型 ,拟合了平均试验寿命的趋势预测模型参数 ;根据一定试验控制参数下的试验结果分析 ,验证了寿命分布服从威布尔分布 ,并对分布模型参数进行了参数估计 ;根据试验结果分析及威布尔分布的特点近似确定了安全寿命 (可靠度大于 99% )的曲线模型及参数值 ,得到了有实用价值的概率—试验载荷—寿命曲线 (曲面 )更多还原

【Abstract】 Based on the testing results obtained by high frequency induction accelerated thermal fatigue testing rig and combined with the theory and achievements of Continuous Damage Mechanics and Thermal Fatigue , a forecasting model about relation between the control parameters of the thermal fatigue and further the heated part life is deduced . The results for life testing, made under the conditions of certain control parameters, show that the Life-Distribution obeys the Weibull-Distribution. And a final valuable curve (curved surface) Probability-Testing Load-Life is yielded, after deciding the corresponding Weibull’s parameters and selecting the Safety-Life for the engineering application purpose.更多还原