کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
777930 1463843 2008 13 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
A critical comparison of two models for assessment of fatigue data
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی مکانیک
پیش نمایش صفحه اول مقاله
A critical comparison of two models for assessment of fatigue data
چکیده انگلیسی

A comparison and a critical discussion of the results obtained for the analysis of fatigue data using the up-and-down method and the Wöhler field based method proposed by Castillo et al. are done and some practical conclusions are given. In addition, the paper introduces an alternative Markov model for analyzing the up-and-down method which improves that proposed by Chao and Fuh [Chao MT, Fuh CD. Bootstrap methods for the up and down test on pyrotechnics sensitivity analysis. Stat Sinica 2001; 1–21.] in that it keeps one of the characteristic features of the up-and-down method consisting of the fact that some stress levels are not possible for odd steps and some are not possible for even steps. In addition, the method is valid for any parent distribution including the most common normal and Weibull models. In particular the case of a Weibull parent distribution is used for fatigue data and two estimation methods are presented: maximum likelihood and least squares. In particular, it is shown that the up-and-down method neglects important information contained in the data making it very expensive and inefficient when compared with other alternative models. The methods are illustrated using data from Dixon and Mood and an experimental program carried out at Empa.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Journal of Fatigue - Volume 30, Issue 1, January 2008, Pages 45–57
نویسندگان
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