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Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 9 of 9 for “"Weibull Analysis"”.
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Mechanical Properties and Electrochemical Durability of Solid Oxide Fuel Cells
… for the electrolyte materials. Finite element analysis (FEA) was validated and used to calculate 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 …
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Analysis of Strength Variation in Glass Due to Ion Exchange
… compare the changes in statistical variation and Weibull characteristics of the strength of glass rods as modified by heat treatment with and without an ion exchange bath. Several sample groups of 30 sodium borosilicate glass rod specimens were heat treated at various temperatures in air and in a …
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Precursor gas comparison for the growth of silicon carbide fibers via laser chemical vapor deposition
… were qualitatively more delicate to handle. A Weibull analysis revealed that the fibers had a low Weibull modulus, which is an indication of a large and unpredictable variation of flaws within the fibers.
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Crush Strength Analysis of Hollow Glass Microspheres
… a major factor affecting strength as well as the Weibull parameters. Two different methods, microscopy counting and laser light scattering, used in the research yielded similar distributions. The main objective of this research was to analyze the crush strength of individual microspheres. Using …
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Mechanical characterization of advanced polyacrylonitrile derived carbon fibers reinforced with carbon nanotubes
… number of individual fibers. The two parameter Weibull distribution was used to analyze the mechanical strength data. Due to variability in the fiber cross-section and the two different gauge lengths, a volume corrected Weibull analysis was applied. Fibers isolated from three different bundles, …
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Use of a Synthetic Substrate for Orthodontic Bond Strength Testing
… adhesive remnant index (ARI). One-way ANOVA and Weibull analysis statistical tests were used to evaluate and compare the groups. Sample surfaces were analyzed under the light microscope to determine the mode of bond failure for ARI. The Kruskall-Wallis test was used to determine differences in …
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Vibration assisted filling of thin section castings
… filling type and the fluidity characteristics. Weibull analysis identifies the acceleration vibration as practical criterion to judge the reliability of casting. A vibration mould with vertical direction in the thin wall investment casting after filling can make the liquid metal flow into the …
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Data Driven Bridge Deck Deterioration Modeling and Maintenance Intervention Scheduling
<p>Majority of over 617,000 bridges across the United States are significantly impacted by environmental factors, aging materials, and heavy traffic loads. According to the 2021 Infrastructure Report, nearly 231,000 bridges require repair or preservation work, with 46,154 (7.5%) being classified as …
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Ranking of Fatigue Data Based upon Monte Carlo Simulated Confidence Number Figures
… time consuming and costly. As a solution a Weibull-based Monte Carlo simulation of fatigue life was developed based upon a failed "bin" model, and five billion fatigue lives were simulated. These fatigue lives were used to generate L10 lives. A model of confidence number was developed …