Probability estimators for Weibull statistics of the failure strengths of brittle powder compacts

Balaba, W. M.; Stevenson, L. T.; Wefers, K.; Tackie, M. N.

doi:10.1007/bf00721791

Cited by 14 publications

(3 citation statements)

References 3 publications

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“…The modulus of elasticity was also evaluated measuring the deflection of the bars in correspondence to the middle of the surface subjected to tensile stress, by an extensometer integral with the bending fixture. The average flexural strength, σ, was calculated and Weibull's modulus, m, was evaluated via the least squares method and linear regression analysis, adopting P n = (i−0.5)/N, 13 as the probability estimator.…”

Section: Experimentalsmentioning

confidence: 99%

New body mixes for porcelain stoneware tiles with improved mechanical characteristics

Tucci

Esposito

Malmusi

et al. 2007

Journal of the European Ceramic Society

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Section: Experimentalsmentioning

confidence: 99%

New body mixes for porcelain stoneware tiles with improved mechanical characteristics

Tucci

Esposito

Malmusi

et al. 2007

Journal of the European Ceramic Society

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“…The average flexural strength s was calculated, and Weibull's modulus m was evaluated via the least squares method and linear regression analysis, 18 adopting as the probability estimator P n 5(i20 . 5)/N, 19 where N is the number of strength measurements and i the ranking number, with i51 for the weakest specimen and i5N for the strongest.…”

Section: Methodsmentioning

confidence: 99%

Use of scrap glass as raw material for porcelain stoneware tiles

Tucci¹,

Rambaldi²,

Esposito³

2006

Advances in Applied Ceramics

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The possibility of recycling scrap glass (soda lime, lead and barium based glasses) by incorporation into a porcelain stoneware tile mix has been examined. Starting from a standard porcelain stoneware body mix, several modified mixes were prepared by replacing different amounts of the fluxing component, a sodium feldspathic sand, with three types of scrap glass: a soda lime glass from urban wastes, a lead based glass from the neck part of cathode ray tubes (CRTs), and a barium based glass from CRT panels. The replacement of feldspar sand with a soda lime scrap glass, in the range 5-10 wt-%, allows porcelain stoneware materials to be obtained with good characteristics. A slight decrease in the water absorption of the fired material is observed after sintering at the same temperature as the reference mix. Furthermore, flexural strength remains high and the microstructural homogeneity enhances reliability. The presence of 2 and 5 wt-%, of lead and barium based scrap glass respectively, both characterised by lower liquid viscosity at higher temperature, makes possible a significant decrease in the sintering temperature of the modified porcelain stoneware products while maintaining good mechanical properties.

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“…Failure probability, P, is calculated by several assumptions in Ref. [22][23][24] , but Kirtay and Dispinar [25] suggested that the Hazen estimation is the most stable method, and is determined by an estimator given in Eq. 3;…”

Section: Overseas Foundrymentioning

confidence: 99%

Weibull analysis of fluidity and hardness of ultrasonically degassed secondary Al7Si0.3Mg aluminum alloy

Yüksel

2019

China Foundry

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I n foundry engineering, casting parameters, such as fluidity and turbulent filling directly affect the properties of the cast metals, i.e. hardness and tensile strength. Predicting these parameters can improve the entire casting process. Also, it is necessary to establish these variables in simulation techniques, and casting procedures, i.e. fluidity test and mechanical test [1]. Dong et al. [2] have investigated the effect of ultrasonic stirring on hardness and concluded that if porosities were not eliminated, the hardness values of the materials could not be increased, even if average grain diameter and eutectic silicon aspect ratio are both lowered. Moussa et al. [3] has established ascending hardness values on Mg 5 Si alloy being exposed to the ultrasonic degassing (UD) process with a 38% increase with regard to modification and refining of microstructural constituents. The variation of the mechanical properties of Al-Si alloys was investigated with solute addition and ultrasonic process. It is found that the solute addition has a great contribution to the hardness values of the alloy, and also

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Probability estimators for Weibull statistics of the failure strengths of brittle powder compacts

Cited by 14 publications

References 3 publications

New body mixes for porcelain stoneware tiles with improved mechanical characteristics

New body mixes for porcelain stoneware tiles with improved mechanical characteristics

Use of scrap glass as raw material for porcelain stoneware tiles

Weibull analysis of fluidity and hardness of ultrasonically degassed secondary Al7Si0.3Mg aluminum alloy

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