Proportional Limit Stress and Residual Thermal Stress of 3D SiC/SiC Composite
来源期刊：JOURNAL OF MATERIALS SCIENCE TECHNOLOG2014年第10期
论文作者：Shanhua Liu Litong Zhang Xiaowei Yin Yongsheng Liu Laifei Cheng
文章页码：959 - 964
摘 要：Proportional limit stress(PLS) and residual thermal stresses(RTS) of 3D SiC/SiC composite were investigated.PLS was obtained by four different methods from the monotonic stress—strain response curve to get a convincing value.RTS in the SiC matrix was quantified by solving the geometric intersection point of the regression lines of hysteresis loops from the periodical loading—unloading—reloading cycle test curve.Classical ACK model and analytical formulas were used to analytically calculate the PLS and RTS of 3D SiC/SiC composite.Good agreement between the experimental results and the analytical calculation was observed.And relationship between the PLS and the RTS of 3D SiC/SiC was discussed.
Shanhua Liu，Litong Zhang，Xiaowei Yin，Yongsheng Liu，Laifei Cheng
Science and Technology on Thermal Structural Composite Materials Laboratory,School of Materials Science and Engineering,Northwestern Polytechnical University
摘 要：Proportional limit stress(PLS) and residual thermal stresses(RTS) of 3D SiC/SiC composite were investigated.PLS was obtained by four different methods from the monotonic stress—strain response curve to get a convincing value.RTS in the SiC matrix was quantified by solving the geometric intersection point of the regression lines of hysteresis loops from the periodical loading—unloading—reloading cycle test curve.Classical ACK model and analytical formulas were used to analytically calculate the PLS and RTS of 3D SiC/SiC composite.Good agreement between the experimental results and the analytical calculation was observed.And relationship between the PLS and the RTS of 3D SiC/SiC was discussed.
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