Global ETD Search
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 “"Flexure -- Testing"”.
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Low modulus, oxidation-resistant interface coatings for SiC/SiC composites
… Vapor Infiltration (CVI). Bars were cut for flexure testing from the infiltrated composite containing Nicalon cloth samples that had been coated using sol-gel. These composites failed gracefully, 1.e., there was fiber pullout and debonding probably at the matrix-coating interface. …
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Fiber Orientation Effects on the Fracture and Flexural Toughness of Extruded Fiber Reinforced Concrete for Additive Manufacturing
… parallel to the tensile stresses produced in flexure testing. The FRCC employed 0.5% and 1% polyvinyl alcohol (PVA) fiber reinforcement by volume. The flexural properties of FRCC were determined using four-point bend tests according to a modified ASTM C1609. Calculations included the modulus …
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A study of the damage accumulation process in poly(aryl ether ketone ketone) and its AS4 carbon fiber reinforced composites
… method and also the drop in stiffness during flexure testing. It has been observed that the ultimate mechanical properties show a weak dependence on the applied heat treatment, whereas the damage accumulation process changes dramatically. A model has been developed to simulate the damage …
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Tensile and Flexure Strength of Unidirectional Fiber-Reinforced Composites: Direct Numerical Simulations and Analytic Models
… reinforced with Sigma SiC fibers under 4-point flexure testing. The predicted tensile and flexure strengths agree very well with the values measured by Gundel and Wawner and Ramamurty et al. The composite strength of disordered spatial fiber distributions is investigated and is shown to have a …
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The Effect of Atmospheric Aging on a Hybrid Polymer Matrix Composites' Material Properties
… assess the effect that aging had on the static flexure strength of the hybrid composite.</p> <p>It was found that the magnitude in static and fatigue material property reduction increased with aging time, and was dictated by which aging mechanism was dominant. Microstructural changes revealed …
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The role of the fiber/matrix interphase in the static and fatigue behavior of polymeric matrix composite laminates
… Continuous Ball Indentation Test and transverse flexure testing, as a means of interrogating the strength of the interphase. The influence of the interphase on the tensile and compressive strength and modulus of crossplied laminates possessing a center hole is investigated. Unnotched angle-ply …
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Development on wireless IMU sensors for biomechanical assessments
Measuring human movement and posture is an important area of research for biomedical engineering and rehabilitation. These measurements can be used to evaluate functional performance under normal and abnormal conditions and aid in clinical assessment. An increasingly popular method to measure human …
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Flexural Behavior of Laterally Damaged Full-Scale Bridge Girders Through the Use of Carbon Fiber Reinforced Polymers (CFRP)
… CFRP. This document summarizes the analysis and testing of full-scale 40’ foot long prestressed concrete (PSC) bridge girders exposed to simulated impact damage and repaired with carbon fiber reinforced polymers (CFRP) materials. A total of five AASHTO type II bridge girders fabricated in the …