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CVD法SiC纤维的强度测试及评价
  • 期刊名称:西北工业大学学报. 24(3). 342-345, 2006(EI收录)
  • 时间:0
  • 分类:TG146.23[金属学及工艺—金属材料;一般工业技术—材料科学与工程;金属学及工艺—金属学]
  • 作者机构:[1]School of Materials Science and Engineering, Northwestern Polytechnical University, Xi'an 710072, China
  • 相关基金:Project(50371069) supported by the National Natural Science Foundation of China; Project(04G53044) supported by the Defense Fundamental Research Program of China; Project supported by the Doctoral Innovation Foundation of Northwestern Polytechnical University, China
  • 相关项目:SiC纤维增强Ti基复合材料界面反应机理
中文摘要:

有限元素方法基于相等的领域积分技术被开发外面模仿推测试并且评估原文如此增强的钛矩阵 composites 的界面的破裂坚韧。当为推外面测试建模控制界面的失败过程时,一个特殊子程序被介绍。另外,剩余压力,泊松比率和磨擦压力都在有限元素分析被考虑,接口 debonding 被描述为一个连续过程。结果证明 SiC/Timetal-834 的界面的破裂坚韧是大约 50 J/m2。而且,界面的破裂坚韧和在标本的两结束的精力版本率的变化上的各种各样的参数的效果详细被分析。

英文摘要:

The finite element method based on the equivalent domain integral technique was developed to simulate the push out test and evaluate the interfacial fracture toughness of SiC reinforced titanium matrix composites. A special subroutine was introduced while modeling the push-out test to control interfacial failure process. In addition, the residual stresses, Poisson ratio and friction stresses were all considered in the finite element analysis and the interface debonding was described as a continuous process. The results show that the interfacial fracture toughness of SiC/Timetal-834 is about 50 Jim2. Moreover, the effects of various parameters on the interfacial fracture toughness and the variations of energy release rates at both ends of the specimen were analyzed in detail.

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