An SHTB-based experimental technique for elevated temperature
A new experimental technique by means of split Hopkinson tensile bar (SHTB) at elevated temperature of 800℃ was introduced.By this technique we carried out an investigation into the dynamic properties of 2D C/SiC composite at both room and elevated temperature of 20℃ and 800℃.It was found that the failure strength and strain of 2D-C/SiC composite decreases significantly with the increase of temperature.Observation of SEM micrographs of failed specimen fracture under dynamic tensile loading at both temperatures reveals a comparatively smooth fracture and short fiber pull-out at elevated temperature of 800℃,and we attribute it to the oxidation or partial oxidation of the carbon fibers under dynamic loading at elevated temperature.
SHTB elevated temperature Simultaneous-Heating-and-Cooling (SHC) 2D C/SiC composite SEM
Chen Xuan Li Yulong Ouyang Na
School of Aeronautics,Northwestern Polytechnical University,Xian,China School of Language,Literature and Law,Xian University of Architecture and Engineering,Xian,China
国际会议
沈阳
英文
321-325
2012-09-26（万方平台首次上网日期，不代表论文的发表时间）