Papers by Keyword: Rupture Life

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Authors: Jie Zhao, Tie Shan Cao, Xin Yue Liu, Cong Qian Cheng
Abstract: The current paper proposes a so-called Zc method to evaluate creep strain and rupture life of heat resistant steels by considering the scattering distribution of experimental data, where the Zc value indicates the deviation of the fitted σ-P curves at different creep strains to the main curve. It is shown that the value of Zc increased rapidly at first and then became stable with increasing creep strain, meanwhile, the degree of deviation between experiment data and the corresponding fitted curves came to decrease. The current method provides a statistic method for predicting creep stain and rupture life and get good agreement with experiment result.
Authors: M.N. Menon, H.T. Fang, D.C. Wu, M.G. Jenkins, Mattison K. Ferber
Authors: Xiao Bing Ma, Ting Ting Wang, Jing Yu Wang, Zhen Yu Liu
Abstract: Integral inference method for multi-state type-Ⅱcensored data is presented, which is used to evaluate the rupture life of composite material. The best unbiased estimators for the model parameters, the standard deviation and their covariance are also given. The confidence limits of the acceleration equation and the confidence intervals of percentiles for Weibull distribution are discussed in detail. According to the presented method, the experimental information of accelerated rupture life is fully exploited, and the cross information among test data in different stresses are analyzed as an integration.So its information quantity is much bigger than traditional group test method. The method provides a feasible and effective approach to rupture life evaluation and reliability estimation of composite material.
Authors: Xing Gang Liu, Xu Pan, Jin Guo Li, Yan Hui Wang, Shi Zhe Zhu, Yun Yang Pang
Abstract: This paper studies the coupled effects of alloy elements for precipitation strengthening to rupture life of single crystal Ni-based superalloys. Through setting up the Radial Basis Function model to predict rupture life, the generalization ability test indicated that this model has better precision and practicability. According to this model, utilizing the theory of parameter sensitivity analysis to quantitative analysis the interactive effects of different alloy elements and/or groups to rupture life, providing the theory basis and reference for the alloy design and productivity of single crystal Ni-based superalloys.
Authors: D.L. Wang, Tao Jin, S.Q. Yang, Z. Wei, J.B. Li, Zhuang Qi Hu
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