...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>International Journal of Solids and Structures >FAILURE MECHANISMS AND DAMAGE EVOLUTION IN CROSSPLY CERAMIC-MATRIX COMPOSITES
【24h】

FAILURE MECHANISMS AND DAMAGE EVOLUTION IN CROSSPLY CERAMIC-MATRIX COMPOSITES

机译：交叉陶瓷基复合材料的破坏机理和损伤演化

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Failure mechanisms were studied under the microscope in a crossply silicon carbide/glass-ceramic composite under axial tensile loading. Failure initiation takes place in the 90 degrees layer. It takes the form of radial matrix cracks around the fibers, followed by interfacial cracks, which in turn coalesce into transverse macrocracks. These transverse macrocracks in the 90 degrees layer reach a characteristic saturation crack density with a minimum crack spacing of the order of the layer thickness. Subsequently, transverse matrix cracks are generated in the 0 degrees layer, increasing in density up to a minimum crack spacing of the order of eight fiber diameters. This stage of failure is accompanied by fiber-matrix debonding and some fiber-failures in the 0 degrees layer. In the third stage of damage development, the macrocracks of the 90 degrees layer branch off and connect with the 0 degrees layer cracks in a characteristic ''delta'' pattern. This is finally followed by delamination and additional cracking in the 90 degrees layer prior to ultimate failure. The various failure mechanisms and their interactions were discussed and compared with predictions of prior experimental and analytical studies of unidirectional and crossply composites. [References: 38]
机译：在轴向拉伸载荷下，在交叉碳化硅/玻璃-陶瓷复合材料的显微镜下研究了失效机理。故障引发发生在90度层中。它以纤维周围的径向基体裂纹的形式出现，随后是界面裂纹，后者依次合并成横向大裂纹。 90度层中的这些横向宏观裂纹达到了特征饱和裂纹密度，最小裂纹间距约为层厚度。随后，在0度层中产生横向基体裂纹，密度增加，直至最小的裂纹间距约为纤维直径的八倍。破坏的这一阶段伴随着纤维基质的脱粘和0度层中的一些纤维破坏。在损伤发展的第三阶段，90度层的宏观裂纹分叉并与0度层的裂纹相连，并具有特征性的“三角形”图案。最后，在最终破坏之前，会在90度层中发生分层和其他裂纹。讨论了各种破坏机理及其相互作用，并与先前对单向和交叉复合材料的实验和分析研究的预测进行了比较。 [参考：38]

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号