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Characterization model of thermal shock resistance for fiber reinforced brittle matrix composites over a wide range of cooling environment temperatures
【文件类型】 【消费金额】1.8 【文章页数】6 【会员操作】  
【文章作者】Deng, Yong;Li, Weiguo;Zhang, Xin;Kou, Haibo;Shao, Jiaxing;Zhang, Xuyao;Zhang, Xianhe;Li, Ying;Ma, Jianzuo
【文章摘要】      In this study, a thermal shock resistance model over a wide range of cooling environment temperatures for fiber reinforced brittle matrix composites is developed. The model takes into account the combined effects of cooling environment temperature and temperature-dependent material parameters. The critical temperature difference causing matrix cracking of SiC fiber reinforced reaction bonded Si3N4 composite and Nicalon fiber reinforced borosilicate composite are predicted over a wide range of cooling environment temperatures. The results show that the thermal shock resistance of composites is strongly dependent on the cooling environment temperature. Moreover, the quantitative influences of matrix Young's modulus, thermal expansion coefficient of matrix, and interfacial shear stress on thermal shock resistance with increase of cooling environment temperature are studied in detail. And some insights into improving the thermal shock resistance of fiber reinforced brittle matrix composites are obtained.
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【卷】44【ISSUE】5【ISSUEID】815C0073    【文章期份】2018    【发布日期】2018/8/28 16:25:27    点击率:0    打印    关闭
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