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Strength-Size Relationships in Ceramic Materials: 1. Investigation of a Commercial Alumina. 2. Effect of Flaw Shape on Strength of Ceramics.
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In this paper, the bend strength of a commercial sintered alumina, 3M Company's Alsimag 614, was measured at room temperature under environmental conditions which either minimized or enhanced subcritical crack growth prior to catastrophic fracture.Abstract:
: Bend strengths of a commercial sintered alumina, 3M Company's Alsimag 614, are reported. Fracture stresses in specimens differing in each linear dimension by a factor of five were measured at room temperature under environmental conditions which either minimized or enhanced subcritical crack growth prior to catastrophic fracture. Strength was found to be dependent on specimen size under both test conditions. Fractographic identification of strength-controlling flaws, coupled with the analysis of strength-size data, indicated a limited applicability of Weibull's statistical approach.read more
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High‐Temperature Mechanical Behavior of Stoichiometric Magnesium Spinel
TL;DR: In this paper, the elastic and mechanical properties of Stoichiometric polycrystalline magnesium aluminum spinel have been studied from room temperature up to 1300deg;C. Elastic modulus, fracture toughness, and modulus of rupture measurements and observations of polished and fracture surfaces have been performed.
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Mechanical Properties of Mullite
Tai-Il Mah,K. S. Mazdiyasni +1 more
TL;DR: The mechanical properties of 3AI2O3.2SiO2 were investigated over the temperature range room temperature to 1500°C in this article, where large agglomerates were found to contribute to the formation of porosity nests which act as strength-controlling flaws at room temperature as well as at high temperatures.
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Effect of Grinding on Flaw Geometry and Fracture of Glass
TL;DR: In this paper, the authors combined fracture mechanics with fracture surface analysis to analyze brittle failure of glass bars which were tested relative to the direction of grinding and found that the fracture mirror radius, r, occurs at a constant stress-intensity level independent of flaw geometry.
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Mechanical properties of mullite materials
TL;DR: In this paper, the mechanical behavior of two 3Al2O3 · 2SiO2 dense mullite materials with the same level of impurities but different in nature has been studied.
NIST Recommended Practice Guide: Fractography of Ceramics and Glasses
TL;DR: In this paper, an expanded "fractography" guide for analyzing fractography of ceramics and glasses is presented. But it does not cover the analysis of brittle materials.
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