The effect of specimen cross-sectional area on the strength and toughness of two-dimensional C/SiC composites

Hui Mei; Shanshan Xiao; Qianglai Bai; Hongqin Wang; Haiqing Li; Laifei Cheng

doi:10.1016/j.ceramint.2014.10.130

The effect of specimen cross-sectional area on the strength and toughness of two-dimensional C/SiC composites

Hui Mei, Shanshan Xiao, Qianglai Bai, Hongqin Wang, Haiqing Li, Laifei Cheng

School of Materials Sience and Engineering

Northwestern Polytechnical University Xian

Research output: Contribution to journal › Article › peer-review

15 Scopus citations

Abstract

The current work investigates the effect of specimen cross-sectional area on the strength and toughness of two-dimensional carbon fiber-reinforced SiC matrix composites (C/SiC). Three types of C/SiC specimens with varying cross sections were fabricated by chemical vapor infiltration followed by heat treatments at 1500 °C and 1900 °C. Dogbone composite specimens were tested in tension for the determination of tensile strength, fracture toughness and elastic modulus. Results showed that, as specimen cross-sectional area decreased, fracture toughness and elastic modulus increased while tensile strength increased only marginally. Heat treatment was found to limit the effect of cross-sectional area on the tensile strength and elastic modulus of the C/SiC composites.

Original language	English
Pages (from-to)	2963-2967
Number of pages	5
Journal	Ceramics International
Volume	41
Issue number	2
DOIs	https://doi.org/10.1016/j.ceramint.2014.10.130
State	Published - 1 Mar 2015

Keywords

B. Composites
C. Mechanical properties
D. SiC

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10.1016/j.ceramint.2014.10.130

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abstract = "The current work investigates the effect of specimen cross-sectional area on the strength and toughness of two-dimensional carbon fiber-reinforced SiC matrix composites (C/SiC). Three types of C/SiC specimens with varying cross sections were fabricated by chemical vapor infiltration followed by heat treatments at 1500 °C and 1900 °C. Dogbone composite specimens were tested in tension for the determination of tensile strength, fracture toughness and elastic modulus. Results showed that, as specimen cross-sectional area decreased, fracture toughness and elastic modulus increased while tensile strength increased only marginally. Heat treatment was found to limit the effect of cross-sectional area on the tensile strength and elastic modulus of the C/SiC composites.",

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AU - Mei, Hui

AU - Xiao, Shanshan

AU - Bai, Qianglai

AU - Wang, Hongqin

AU - Li, Haiqing

AU - Cheng, Laifei

PY - 2015/3/1

Y1 - 2015/3/1

N2 - The current work investigates the effect of specimen cross-sectional area on the strength and toughness of two-dimensional carbon fiber-reinforced SiC matrix composites (C/SiC). Three types of C/SiC specimens with varying cross sections were fabricated by chemical vapor infiltration followed by heat treatments at 1500 °C and 1900 °C. Dogbone composite specimens were tested in tension for the determination of tensile strength, fracture toughness and elastic modulus. Results showed that, as specimen cross-sectional area decreased, fracture toughness and elastic modulus increased while tensile strength increased only marginally. Heat treatment was found to limit the effect of cross-sectional area on the tensile strength and elastic modulus of the C/SiC composites.

AB - The current work investigates the effect of specimen cross-sectional area on the strength and toughness of two-dimensional carbon fiber-reinforced SiC matrix composites (C/SiC). Three types of C/SiC specimens with varying cross sections were fabricated by chemical vapor infiltration followed by heat treatments at 1500 °C and 1900 °C. Dogbone composite specimens were tested in tension for the determination of tensile strength, fracture toughness and elastic modulus. Results showed that, as specimen cross-sectional area decreased, fracture toughness and elastic modulus increased while tensile strength increased only marginally. Heat treatment was found to limit the effect of cross-sectional area on the tensile strength and elastic modulus of the C/SiC composites.

KW - B. Composites

KW - C. Mechanical properties

KW - D. SiC

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DO - 10.1016/j.ceramint.2014.10.130

M3 - 文章

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JO - Ceramics International

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The effect of specimen cross-sectional area on the strength and toughness of two-dimensional C/SiC composites

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Keywords

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