Results 11 to 20 of about 14,459 (265)
Weibull modulus for diverse strength due to sample-specificity [PDF]
Theoretical and Applied Fracture Mechanics, 2000 By sample specificity it is meant that specimens with the same nominal material parameters and tested under the same environmental conditions may exhibit different behavior with diversified strength. Such an effect has been widely observed in the testing of material failure and is usually attributed to the heterogeneity of material at the mesoscopic ...
Yao Bai +3 more
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Evaluation of Weibull Modulus by Weibull Plane
Journal of the Ceramic Society of Japan, 1993 H. Uchimura
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Gazi University Journal of Science, 2022 The Weibull distribution has been widely used to model strength properties of brittle materials. Estimation of confidence intervals for Weibull shape parameter has been an important concern, since small sample sizes in materials science experiments bring about large intervals.
Meryem Yalçınkaya, Burak Birgören
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Weibull Modulus of Cleavage Fracture Toughness of Ferritic Steels
Metallurgical and Materials Transactions A, 2021 The ordinary Weibull distribution function has been commonly accepted for empirical characterization of cleavage fracture toughness of nuclear reactor and containment pressure vessel steels. However, this method lacks a fundamental basis. This work adopts the standardized Weibull distribution function to analyze cleavage fracture toughness of ferritic ...
Wei‐Sheng Lei +3 more
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Unbiased weighted least squares estimation of Weibull modulus with small samples [PDF]
Sigma Journal of Engineering and Natural Sciences – Sigma Mühendislik ve Fen Bilimleri DergisiBurak Birgören
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On estimating Weibull modulus by moments and maximum likelihood methods [PDF]
Journal of Materials Science, 2007 The effect of true Weibull modulus and sample size on Weibull modulus estimated by moments and maximum likelihood methods was investigated. Results indicated that the value of true Weibull modulus had no effect on estimated modulus for the maximum likelihood method, and a strong effect for the moments method, especially when sample size was less than ...
Murat Tiryakioğlu
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Bayesian Confidence Interval Estimation of Weibull Modulus Under Increasing Failure Rate
Gazi University Journal of Science, 2021 Estimating the confidence interval of the Weibull modulus is an important problem in the fracture strength modeling of ceramic and composite materials. It is particularly important in cases where the sample size is small due to high experimental costs.
Meryem Yalçınkaya, Burak Birgören
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Statistical distribution of the estimator of Weibull modulus [PDF]
Journal of Materials Science Letters, 2001 The Weibull statistic has been widely used to study the inherent scatter existing in the strength properties of many advanced materials, as well as in the fracture toughness of steels in the ductile-brittle transition region.
E. Barbero +2 more
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Improvement of Strength, Weibull Modulus and Damage Tolerance of SiC
Materials Science Forum, 2007 This paper reports the significant effects of addition of 30 nm SiC, polytitanocarbosilane and SiC fabric to enhance the mechanical reliability of SiC. The flexural strengths of dense SiC hot-pressed with 800 nm particles (average strength 565 MPa for Y2O3-Al2O3 additives and 640 MPa for Yb2O3-Al2O3 additives) were enhanced to average strength 735-820 ...
Yoshihiro Hirata +5 more
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Weibull Modulus Estimated by the Non-linear Least Squares Method: A Solution to Deviation Occurring in Traditional Weibull Estimation [PDF]
Metallurgical and Materials Transactions A, 2017 Abstract The Maximum Likelihood method and the Linear Least Squares (LLS) method have been widely used to estimate Weibull parameters for reliability of brittle and metal materials. In the last 30 years, many researchers focused on the bias of Weibull modulus estimation, and some improvements have been achieved, especially in the case of the ...
T. Li, W.D. Griffiths, Jing Chen
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