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工業(yè)純鈦TA2非概率失效評定曲線研究
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國家自然科學(xué)基金(51075199);江蘇省普通高校研究生科研創(chuàng)新計(jì)劃項(xiàng)目 (CXZZ11_0341)


Non-probabilistic Failure Assessment Curve for Commercially Pure Titanium TA2
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    摘要:

    基于中心復(fù)合實(shí)驗(yàn)設(shè)計(jì)方法,對材料性能、裂紋尺寸、操作壓力等不確定參數(shù)對失效評定曲線的影響水平作了定性分析;同時(shí)利用參數(shù)敏感性分析方法,對上述不確定性參數(shù)對失效評定曲線的影響進(jìn)行了定量分析。結(jié)果表明,定性和定量分析具有一致性?;贓PRI工程計(jì)算方法,利用概率理論建立了TA2材料的概率失效評定曲線(Probabilistic Failure Assessment Curve,PFAC);利用區(qū)間分析理論,建立了TA2材料的非概率失效評定曲線(Non-probabilistic Failure Assessment Curve,NPFAC),對比PFAC和NPFAC發(fā)現(xiàn)利用NPFAC進(jìn)行缺陷失效評定是有效可行的

    Abstract:

    Based on the central composite experimental design method, the impact levels of uncertain parameters to failure assessment curve were qualitatively analyzed, such as material properties, defect dimension and operating pressure. With the sensitivity method, the impact levels of uncertain parameters to failure assessment curve were quantitatively analyzed. It is demonstrated that the qualitative results and quantitative results are consistent. Based on EPRI method, probabilistic failure assessment curves (PFAC) of commercially pure titanium TA2 were established with the probabilistic method, and non-probabilistic failure assessment curves (NPFAC) were established based on interval analysis method. Compared NPFAC with PFAC, it could be found that NPFAC for structural defect assessment is feasible and effective

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陳祥偉,賀小華,代 巧,周昌玉.工業(yè)純鈦TA2非概率失效評定曲線研究[J].稀有金屬材料與工程,2014,43(11):2687~2691.[Chen Xiangwei, He Xiaohua, Dai Qiao, Zhou Changyu. Non-probabilistic Failure Assessment Curve for Commercially Pure Titanium TA2[J]. Rare Metal Materials and Engineering,2014,43(11):2687~2691.]
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  • 收稿日期:2013-11-22
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  • 在線發(fā)布日期: 2015-04-07
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