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首页> 外文会议>Mechanical properties and performance of engineering ceramics and composites IX >DURABILITY RESULTS FROM CERAMIC MATRIX COMPOSITE WITH DIFFERING POROSITY LEVELS
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DURABILITY RESULTS FROM CERAMIC MATRIX COMPOSITE WITH DIFFERING POROSITY LEVELS

机译：孔隙率水平不同的陶瓷基复合材料的耐用性结果

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摘要

With ever increasing interest in ceramic matrix composites for high temperature applications, the effect of defects needs to be understood. One of the key defects in this class of materials is porosity that is inherently present due to the manufacturing approaches that are available. While porosity effects are clearly noted for elastic properties based on a rudimentary application of the rule of mixtures approach, the effect on durability is not as clear. This is due to the dominance of fibers on the in-plane mechanical properties. In the following work, a series of samples with different levels of porosity were fabricated. Tensile and durability testing were conducted on the samples. As appropriate, non-destructive screening were performed before testing. The results from these tests are presented and trends noted based on mechanical and micro-structural analysis. Insight into such behavior will be a key in setting future non-destructive rejection levels.
机译：随着对高温应用的陶瓷基复合材料的兴趣日益增加，需要了解缺陷的影响。这类材料的关键缺陷之一是由于可用的制造方法而固有地存在孔隙。尽管根据混合规则的基本应用已清楚地注意到了孔隙度对弹性的影响，但对耐久性的影响尚不十分清楚。这是由于纤维在平面内机械性能上占主导地位。在以下工作中，制作了一系列孔隙率不同的样品。对样品进行拉伸和耐久性测试。适当地，在测试之前进行非破坏性筛选。这些测试的结果将根据机械和微观结构分析进行介绍，并指出趋势。洞悉此类行为将是设定未来非破坏性拒绝水平的关键。

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