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[1]李 清1,袁小会1,刘 岑2,等.有效试验数据对钢材机械性能分布规律的影响[J].武汉工程大学学报,2015,37(04):69-73.[doi:10. 3969/j. issn. 1674-2869. 2015. 04. 015]
 ,,et al.Validity test data effect on steel mechanical properties distribution law[J].Journal of Wuhan Institute of Technology,2015,37(04):69-73.[doi:10. 3969/j. issn. 1674-2869. 2015. 04. 015]
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有效试验数据对钢材机械性能分布规律的影响(/HTML)
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《武汉工程大学学报》[ISSN:1674-2869/CN:42-1779/TQ]

卷:
37
期数:
2015年04期
页码:
69-73
栏目:
机电与信息工程
出版日期:
2015-04-30

文章信息/Info

Title:
Validity test data effect on steel mechanical properties distribution law
文章编号:
1674-2869(2015)04-0069-05
作者:
李 清1袁小会1刘 岑2吴元祥1刘 兵1刘小宁12*
1. 武汉软件工程职业学院机械工程学院,湖北 武汉 430205; 2. 武汉工程大学机电工程学院,湖北 武汉 430205
Author(s):
LI Qing1YUAN Xiao-hui 1LIU Cen2WU Yuan-xiang1LIU Bing1LIU Xiao-ning12*
1. School of Mechanical Engineering, Wuhan Polytechnic College of Software and Engineering, Wuhan 430205, China;2. School of Mechanical and Electrical Engineering, Wuhan Institute of Technology, Wuhan 430205, China
关键词:
抗拉强度屈服强度试验数据有效性分布规律S30408钢9%预应变
Keywords:
tensile strength yield strength test data validity distribution law steel S30408 9%-prestrained
分类号:
TH 49 O213.2
DOI:
10. 3969/j. issn. 1674-2869. 2015. 04. 015
文献标志码:
A
摘要:
为了建立机械强度可靠性设计方法,必须分析钢材抗拉强度与屈服强度的分布规律;判别抗拉强度与屈服强度试验数据的有效性是研究其分布规律的基础. 应用数理统计理论,建立了试验数据有效性的判别方法. 基于9%预应变奥氏体不锈钢S30408在液氮温度下的抗拉强度与屈服强度试验数据,在单侧置信度为99%时,判别了试验数据的有效性;根据有效试验数据与可靠性理论,对钢材抗拉强度与屈服强度的分布规律进行了假设检验. 研究表明:试验数据的有效性对分布规律的影响不可忽视;在显著度为0.05时,抗拉强度基本符合正态分布,屈服强度似不符合正态分布.
Abstract:
To establish mechanical strength reliability design method, the tensile strength and yield strength of the steel distribution law must be analyzed; distinguishing the test data validity of steel tensile strength and yield strength is the basis of studying distribution law. Applying mathematical statistics theory, the method for judging the validity of test data was established. Based on tensile strength and yield strength test data of 9%-prestrained austenite stainless steel S30408 at liquid nitrogen temperature, the test data validity was judged at one-sided confidence of 99%; the distribution law of the steel tensile strength and yield strength was studied by hypothetical test based on the validity test data and reliability theory. Results show that the influence of the validity of test data on the distribution law cannot be ignored; at the saliency of 0.05, the tensile strength is random variable which conforms to normal distribution while the yield strength seems not consistent with the normal distribution.

参考文献/References:

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备注/Memo

备注/Memo:
收稿日期:2015-03-02基金项目:湖北省教育厅科研项目(B2014209)作者简介:李清渊(1965-),女,湖北武汉人,副教授.研究方向:机械设计与制造等. * 通信联系人.
更新日期/Last Update: 2015-05-25