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Showing 1 to 11 of 11 for “"weibull statistics"”.
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Exploring the variability in mechanical property testing of dental resin composites
… associated interpretation between investigators. Weibull statistics are used for the analysis of strength data of RBCs, however their applicability to RBCs might be questioned due to some viscous deformation prior to brittle failure. The findings of current study supported the applicability of …
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The Effect of Surface Corrosion Damage on the Fatigue Life of Extruded Aluminum Alloy 6061-T6
… using scanning electron microscopy (SEM) and Weibull statistics. It was determined that samples corroded for both 2-days and 24-days exhibit fatigue lives that can be described using a 3-parameter Weibull distribution. The result of which was the determination of a threshold value for fatigue …
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Electrostatic adhesion testing of metallizations on silicon substrates
… distribution of stress-at-failure data follows Weibull statistics. Field emission scanning electron microscopy reveals that films are delaminated in a micro-blister-type mode. Annealing of metallizations causes reactions and changes flaw distributions. The presence of brittle compounds near the …
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Modeling the Residual Strength Distribution of Structural GFRP Composite Materials Subjected to Constant and Variable Amplitude Tension-Tension Fatigue Loading
… Strength distributions are modeled using Weibull statistics and residual strength is modeled using a strength-life equal rank assumption and a Monte-Carlo style simulation. The model provides good residual strength distribution fits to constant amplitude fatigue data and worked well for …
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Evaluation of fiber-matrix interfacial shear strength in fiber reinforced plastics
… combines stress gradient shear-lag theory with Weibull statistics) to evaluate "interfacial shear strengths". The fact that results did not correlate with the short beam data was examined in detail via a combination of polarized light microscopy, electron microscopy (SEM) and spectroscopy (XPS …
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Reliability and failure analysis of composite beams and plates containing stress concentrations
… literature, are also used. The model is based on Weibull statistics. The Weibull model was extended to account for the three-dimensional stress field including interlaminar stresses. The effect of interlaminar stresses on the total reliability is investigated. Various failure theories for …
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Structural analysis of the MIT Micro Rocket Combustion Chamber
… determination of failure stress levels. Applying Weibull statistics, the strength of the material and the effect of the specimen geometry were quantified. Scanning electron microscope inspection of the etched surfaces provided visual evidence of surface roughness conditions, supporting the …
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Interfacial and Physical Confinement Effects on the Structure and Properties of Aligned Carbon Nanotube Architectures
… based on microfiber bundle mechanics and Weibull statistics, which considers the statistical failure of individual CNTs (fibers) as they either debond from the substrate in Regimes I & II, or break leaving ∼2-micron long CNTs attached to the substrate in Regimes II & III. Morphological and …
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Mechanical and microstructural characterization of nuclear grade PCEA graphite
… alternative for irradiation studies. Weibull statistical analysis across all mechanical tests verified predictable quasi-brittle behavior and provided representative reliability parameters. Digital Image Correlation (DIC) revealed fundamentally different deformation mechanisms under …
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Scaling Effects on Damage Development, Strength, and Stress-Rupture Life on Laminated Composites in Tension
… beams were used to provide parameters for a Weibull model, to re-examine relationship between ultimate strength of 0 deg. plies and specimen volume. The maximum stress in the 0 deg. plies in bending, and the tensile strength of the 0 deg. plies (from valid tests only) was the same. Weibull …
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Design and Performance of Cold Bent Glass
The demand for flat glass is high and increasing significantly in the building industry as a direct result of architectural requirements for lightness, transparency and natural light. Current architectural trends require glass in curvilinear forms for smooth free-form façades. Two principal …