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| 核电压力壳材料SA508－1a钢断裂韧性K_（IC）的可靠性研究 | |
| 引用本文： | 翟忠和. 核电压力壳材料SA508－1a钢断裂韧性K_（IC）的可靠性研究[J]. 系统工程理论与实践, 1996, 16(4): 107-112. DOI: 10.12011/1000-6788(1996)4-107 |
| 作者姓名： | 翟忠和 |
| 作者单位： | 哈尔滨理工大学 |
| 摘 要： | 本文对核电压力壳材料ＳＡ５０８－１ａ钢断裂韧性ｋＩＣ的Ｗｅｉｂｕｌｌ分布及对数正态分布的参数给出了四种不同的估计方法，并通过кодмогров检验和极大拟然比进行优选，确定该材料ＫＩＣ的概率分布．最后求出该ＫＩＣ转变曲线９５％、９９％可靠性的分布带，为该材料的可靠性研究提供了理论依据和实际参数． |
| 关 键 词： | 断裂韧性K_（IC） 概率分布 可靠性 |
| 收稿时间： | 1995-11-06 |
Research into the Reliability of the Material of NuclearPower's Pressure Casing-SA508-1a Steel Fracture Toughness K_(IC) |
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| Zhai Zhonghe. Research into the Reliability of the Material of NuclearPower's Pressure Casing-SA508-1a Steel Fracture Toughness K_(IC)[J]. Systems Engineering —Theory & Practice, 1996, 16(4): 107-112. DOI: 10.12011/1000-6788(1996)4-107 | |
| Authors: | Zhai Zhonghe |
| Affiliation: | Harbin University of Science and Technology, Harbin 150080 |
| Abstract: | This paper has been presented four different kinds of estimate methods for the Weibull distribution and parameter of logarithmic normal distribution of the material of nuclear power,s pressure casing--SA508-1a steel fracture toughness KIc' Meanwhile optimization has been done by means of test and maximum likelihood ratio and the KIC's distribution of material has been decided. Finally the distribution band of 95 percent and 99 percent have been obtained. It has furnished the theoretical evidence and practical parameter for studying reliability of the material. |
| Keywords: | fracture toughness K_(IC) probability distribution reliability |
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