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STATISTICAL AND PROBABILISTIC ANALYSIS OF FATIGUE LIFE DATA WITH TWO-AND THREE-PARAMETER WEIBULL DISTRIBUTION FUNCTIONS

机译:具有两参数和三参数威布尔分布函数的疲劳寿命数据的统计和概率分析

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Product durability and reliability validation requires fatigue testing of limited samples and the corresponding statistical and probabilistic analyses of the test data. The uncertainties introduced into the tests with limited sample size and the assumptions made about the underlying probabilistic distribution function will significantly impact the analysis results and the result interpretation. In this paper, a large amount of fatigue life data collected from several programs are analyzed. The values of the parameters estimated from the two-parameter and three-parameter probabilistic distribution functions, Weibull in particular, are compared. Finally, the observations are summarized and some recommendations are provided.
机译:产品的耐久性和可靠性验证要求对有限的样品进行疲劳测试,并对测试数据进行相应的统计和概率分析。在样本量有限的情况下引入测试的不确定性以及对潜在概率分布函数所作的假设将极大地影响分析结果和结果解释。在本文中,分析了从几个程序中收集到的大量疲劳寿命数据。比较了从两参数和三参数概率分布函数(尤其是威布尔)估计的参数值。最后,总结了观察结果并提供了一些建议。

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