...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Structural health monitoring >Use of an elasto-plastic model and strain measurements of embedded fibre Bragg grating sensors to detect Mode I delamination crack propagation in woven cloth (0/90) composite materials
【24h】

Use of an elasto-plastic model and strain measurements of embedded fibre Bragg grating sensors to detect Mode I delamination crack propagation in woven cloth (0/90) composite materials

机译：使用弹塑性模型和嵌入式光纤布拉格光栅传感器的应变测量来检测机织布（0/90）复合材料中的I型分层裂纹扩展

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

Mode I fracture analysis being employed to study delamination damage in fibre-reinforced composite structures under in-plane and out-of-plane load applications. However, due to the significantly low yield strength of the matrix material and the infinitesimal thickness of the interface matrix layer, the actual delamination process can be assumed as a partially plastic process (elasto-plastic). A simple elasto-plastic model based on the strain field in the vicinity of the crack front was developed for Mode I crack propagation. In this study, a double cantilever beam experiment has been performed to study the proposed process using a 0/90-glass woven cloth sample. A fibre Bragg grating sensor has embedded closer to the delamination to measure the strain at the vicinity of the crack front. Strain energy release rate was calculated according to ASTM D5528. The model predictions were comparable with the calculated values according to ASTM D5528. Subsequently, a finite element analysis on Abaqus was performed using Cohesive Elements' to study the proposed elasto-plastic behaviour. The finite element analysis results have shown a very good correlation with double cantilever beam experimental results, and therefore, it can be concluded that Mode I delamination process of an fibre-reinforced polymer composite can be monitored successfully using an integral approach of fibre Bragg grating sensors measurements and the prediction of a newly proposed elasto-plastic model for Mode I delamination process.
机译：模式I断裂分析用于研究平面内和平面外载荷应用下纤维增强复合材料结构的分层破坏。但是，由于基体材料的屈服强度极低且界面基体层的厚度极小，因此可以将实际分层过程假定为部分塑性过程（弹塑性）。建立了基于裂纹前沿附近应变场的简单弹塑性模型，用于I型裂纹扩展。在这项研究中，已经进行了双悬臂梁实验，以研究使用0/90玻璃编织布样品的拟议过程。光纤布拉格光栅传感器已嵌入到离分层更近的位置，以测量裂纹前沿附近的应变。应变能释放速率根据ASTM D5528计算。模型预测与根据ASTM D5528的计算值相当。随后，使用Cohesive Elements'对Abaqus进行了有限元分析，以研究拟议的弹塑性行为。有限元分析结果与双悬臂梁实验结果具有很好的相关性，因此可以得出结论，使用光纤布拉格光栅传感器的整体方法可以成功地监测纤维增强的聚合物复合材料的模式I分层过程。 I模式分层过程中新提出的弹塑性模型的测量和预测。

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