Fatigue life prediction of thick-section S2-glass/vinyl-ester composites under flexural loading

Article Abstract:

Research discusses testing of fatigue life prediction of S2-glass/vinylester composites under flexural loading in terms of cycle number, stress level, and laminate thickness using the degradation of fatigue modulus. Data indicate that laminate thickness significantly alters modulus whereas it does not change the strength of the material.

United States, Statistical Data Included, Evaluation, Dynamic testing (Materials), Laminated materials, Laminates

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Response of resin transfer molded (RTM) composites under reversed cyclic loading

Article Abstract:

A study analyzes the compressive behaviour and the tension-compression fatigue response of resin transfer molded IM7 PW/PR 500 composite laminates with circular notch. Variations in the laminate strength and stiffness by incrementing fatigue cycles at a fixed load characterize the fatigue damage. The use of cellular replica leads to the estimation of surface damage growth during fatigue. Fatigue failures occur due to debonding of filaments and complete fiber bundle fracture followed by delamination. Fiber buckling, partial fiber fracture and delamination characterize the compressive failure mode.

Research

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Response of SiCf/Si3N4 composites under static and cyclic loading - an experimental and statistical analysis

Article Abstract:

Monotonic tensile and fatigue response of continuous silicon carbide fiber reinforced silicon nitride composites were studied. Findings revealed that the composites retain only 30% of its room temperature strength at 1600 degrees C, indicating a substantial chemical degradation of the matrix at that temperature. The softening of the matrix at high temperature also causes a decrease in tensile modulus and the total decrease in modulus is around 45%.

Analysis, Fiber reinforced composites, Fiber-reinforced ceramics, Ceramic composites

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