Modeling the effects of thermal and mechanical load cycling on a C/SiC composite in oxygen/argon mixtures
Modeling the effects of thermal and mechanical load cycling on a C/SiC composite in oxygen/argon mixtures
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模拟氧/氩混合物中热和机械负载循环对 C/SiC 复合材料的影响
DOI：
10.1016/j.carbon.2007.06.051
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发表时间：
2007-10
期刊：
影响因子：
10.9
通讯作者：
中科院分区：
文献类型：
--
作者：
给出了碳纤维增强SiC基复合材料在O2/Ar气氛中热载荷和机械载荷循环下应变响应的解析解和实验结果。热应变和机械应变分别与温度T和应力σ近似保持线性关系;而基线应变被认为是损伤相关的，由两种主要作用机制的组合产生：（a）伴随纤维脱粘的基质微裂纹形式的物理机制，滑动或断裂以及（B）与纵向增加的顺应性相关的纤维氧化形式的化学机制。基于这些分析的理论模型，考虑到热应变，机械应变和基线应变，从理论上制定的贡献，对整体总应变和他们的产生机制。所提出的模型给出了正确和可靠的预测。
Analytical solutions of and experimental results on the strain response of a carbon fiber reinforced SiC matrix composite under thermal and mechanical load cycling in O2/Ar are presented. Thermal strain and mechanical strain were shown to approximately sustain linear relationships with temperature T and stress σ, respectively; whereas baseline strain was considered to be damage-dependent, resulting from a combination of two major contributing mechanisms: (a) a physical mechanism in the form of matrix microcracking accompanied by fiber debonding, sliding or fracture and (b) a chemical mechanism in the form of the fiber oxidation associated with longitudinally increased compliance. Based on these analyses a theoretical model, taking into account the thermal strain, mechanical strain and baseline strain, was theoretically formulated with respect to the contribution of each on the overall total strain and to their generation mechanisms. The proposed model gave correct and reliable predictions.
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DOI：
10.1016/j.msea.2006.05.062
发表时间：
2006-08
影响因子：
6.4
作者：
H. Mei;Lai-fei Cheng;Litong Zhang;Yongdong Xu
通讯作者：
H. Mei;Lai-fei Cheng;Litong Zhang;Yongdong Xu
影响因子：
9.4
作者：
P. Reynaud;D. Rouby;G. Fantozzi
通讯作者：
P. Reynaud;D. Rouby;G. Fantozzi
影响因子：
6
作者：
H. Mei;Lai-fei Cheng;Litong Zhang
通讯作者：
H. Mei;Lai-fei Cheng;Litong Zhang
影响因子：
9.4
作者：
M. Begley;B. Cox;R. McMeeking
通讯作者：
M. Begley;B. Cox;R. McMeeking
影响因子：
3.9
作者：
H. Mei;Lai-fei Cheng;Litong Zhang
通讯作者：
H. Mei;Lai-fei Cheng;Litong Zhang