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Showing 1 to 7 of 7 for “"biaxial strength"”.
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Behaviour of steel fibre reinforced high performance concrete under biaxial loading conditions
… high performance concrete (SFRHPC) under biaxial loading conditions. Also included are constitutive models to enable numerical predictions of the strength behaviour of such a material. Within the experimental stage a large biaxial test machine was designed and manufactured. The load …
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Analysis and Modeling of the Mechanical Durability of Proton Exchange Membranes Using Pressure-Loaded Blister Tests
… in operating fuel cells impose significant biaxial stresses in the constrained proton exchange membranes (PEM). The PEM's ability to withstand cyclic environment-induced stresses plays an important role in membrane integrity and consequently, fuel cell durability. In this thesis, pressure …
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Measuring Material Properties of Proton Exchange Membranes using Pressure Loaded Blister Testing and Digital Image Correlation
The strength and durability of proton exchange membranes for use in fuel cells has received much attention recently due to the increased push for sustainable alternatives to the internal combustion engine. To be viable, these alternatives must have comparable lifetimes and power outputs to the …
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Mechanical Properties and Electrochemical Durability of Solid Oxide Fuel Cells
… the stress distribution and peak stress for the biaxial strength test. A Weibull analysis was carried out on the test/FEA-predicted peak stresses, and Weibull strength, modulus and material scale parameters were found for each test methodology. The methodologies were evaluated based on the …
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Alumina-aluminum Titanate-titania Nanocomposite: Synthesis, Sintering Studies, Assessment Of Bioactivity And Its Mechanical And Electrical Properties
… were investigated. Vickers hardness and biaxial flexural strength tests were used to determine mechanical properties. Bioactivity of the nanocomposite was assessed in Simulated Body Fluid (SBF), which has the same ionic concentration as that of human plasma. Effects of biodegradation and …
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Experimental Studies on the Mechanical Durability of Proton Exchange Membranes
… two methods involved measuring the in-plane biaxial strength of PEMs and the biaxial hygrothermal stresses that occur in PEMs during hygrothermal cycles. The third method investigated the nonuniform thickness and compressibility of gas diffusion media which can lead to concentrated …
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Consolidation of Al-TiO₂ and Ti₃Al-Ai₂O₃ composite powders
… composites with 96% theoretical density. Biaxial strength of ≤350MPa and ≤278MPa were achieved for Ti₃Al-TiO-Al₂O₃ and Ti₃Al-Al₂O₃ composites, respectively. In this study, fracture toughness as high as 7.5±0.8MPa.m½ was obtained when the phase structure exhibited fine (:'.S4μm) and …