Effect of Fiber Failure on Quasi-Static Unloading/Reloading Hysteresis Loops of Ceramic Matrix Compositese

摘要：

This paper presents an investigation on the effect of fiber failure on the quasi-static unloading/reloading hysteresis loops of ceramic matrix composites. The two-parameter Weibull model is used to describe the fiber strength distribution. The stress carried by the intact fibers during unloading/reloading is determined by the Global Load Sharing (GLS) criterion. The interface debonded length, unloading interface counter slip length, and reloading interface new slip length are obtained by the fracture mechanics approach. The hysteresis loops of different stresses with consideration of fiber failure have been compared with the cases without consideration of fiber failure. The effects of fiber characteristic strength and fiber Weibull modulus on fiber failure, and the shape, area of the hysteresis loops have been analyzed. The predicted hysteresis loops agreed well with the experiment data.

关键词： ceramic matrix composites hysteresis loops matrix cracking interface debonding fiber failure

作者: Li Longbiao Song Yingdong

作者单位: College of Energy and Power Engineering Nanjing University of Aeronautics and Astronautics No.29, Yudao Street, Nanjing, P.R.China

会议类型: 国际会议

会议名称: The 3rd International Symposium on Jet Propulsion and Power Engineering(第三届喷气推进与动力工程国际会议 ISJPPE)

会议地点: 南京

会议语种:英文

页码: 429-435

在线出版日期: 2010-09-13（万方平台首次上网日期，不代表论文的发表时间）