Effects of Bending Cyclic Load on Mechanical Properties of 2D Carbon Cloth Laminated C/C Composites

Xi Yang; He Jun Li; Kua Hai Yu

doi:10.4028/www.scientific.net/AMM.157-158.792

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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vols. 157-158Effects of Bending Cyclic Load on Mechanical...

Effects of Bending Cyclic Load on Mechanical Properties of 2D Carbon Cloth Laminated C/C Composites

Abstract:

Bending cyclic fatigue tests of 2D laminated C/C composites were conducted under load control at a sinusoidal frequency of 10 Hz. And three-point bending tests of fatigued specimens with various cycles were conducted at room temperature to evaluate the effects of cyclic load on mechanical properties. 2D C/C specimens were prepared by an isothermal chemical vapor deposition (CVD) process. The mechanical properties of composites were improved after cyclic loading at most the flexural strength by about 46% and the modulus 38%. The results show that the flexural properties of C/C composites were enhanced with the increase in fatigue cycles. It is suggested that the weakened interface between matrix and fibers by cyclic load play important roles in enhancing the property of C/C composites.

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Periodical:

Applied Mechanics and Materials (Volumes 157-158)

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792-795

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https://doi.org/10.4028/www.scientific.net/AMM.157-158.792

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February 2012

Authors:

Xi Yang, He Jun Li, Kua Hai Yu

Keywords:

Carbon-Carbon Composites, Fatigue, Mechanical Property

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