Effect of Ranking Selection on the Weibull Modulus Estimation

Sebahattin KIRTAY; Derya DISPINAR

Makale detayları

Effect of Ranking Selection on the Weibull Modulus Estimation

Yazarlar:

Sebahattin KIRTAY | Derya DISPINAR

Yayıncı:

Gazi University

Dergi:

Gazi University Journal of Science 2012 Vol.25 Issue 1, pp.175-187

Belge Tipi:

Makale

Yayın Tarihi:

1/2012

Belge Dili:

İngilizce

Document ID (Org No.):

2000429453

eISSN:

2147-1762

Özet:

 


Determination of mechanical properties of materials requires repeatable and consistent results. Therefore, the Weibull statistical distribution is widely used to verify the confidence levels of the test results where probability of failure is predicted. The reliability of results is characterised by Weibull distribution where Weibull parameters are determined and compared with the benchmarks. Recent studies showed that the size of the population and the method chosen to estimate the Weibull modulus play an important role. Therefore, in this study, the effect of ranking selection over the Weibull parameters (alpha-characteristic life, beta-shape parameter, R2 and survival probability) was investigated. The data from authors’ recent research were re-evaluated. In addition, randomly generated data with population from 5 to 50 sample sizes were studied. The results showed that the mean rank regression to estimate the failure probability had the highest R2 and the lowest shape parameter. It was also found that the results were independent of sample size.

 

Keywords: Estimators, mechanical test, prediction limit, Weibull distribution, Weibull modulus

 

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Makale detayları

Effect of Ranking Selection on the Weibull Modulus Estimation

Yazarlar: Sebahattin KIRTAY | Derya DISPINAR

Yayıncı: Gazi University

Dergi: Gazi University Journal of Science 2012 Vol.25 Issue 1, pp.175-187

Belge Tipi: Makale

Yayın Tarihi: 1/2012

Belge Dili: İngilizce

Document ID (Org No.): 2000429453

eISSN: 2147-1762

Sayı

Yazarlar:

Sebahattin KIRTAY | Derya DISPINAR

Yayıncı:

Gazi University

Dergi:

Gazi University Journal of Science 2012 Vol.25 Issue 1, pp.175-187

Belge Tipi:

Makale

Yayın Tarihi:

1/2012

Belge Dili:

İngilizce

Document ID (Org No.):

2000429453

eISSN:

2147-1762