Effects of Thickness on Mechanical Properties of 2D C/SiC Torque Tube  

作　　者：ZHAO Hui ZHANG Litong CHEN Bo ZHANG Jiaxin 赵晖;ZHANG Litong;CHEN Bo;ZHANG Jiaxin(Science and Technology on Thermostructure Composite Materials Laboratory, Northwestern Polytechnical University)

机构地区：[1]Science and Technology on Thermostructure Composite Materials Laboratory, Northwestern Polytechnical University

出　　处：《Journal of Wuhan University of Technology(Materials Science)》2019年第5期1049-1054,共6页武汉理工大学学报（材料科学英文版）

基　　金：Funded by the Research Fund of the State Key Laboratory of Solidification Processing(NWPU),China(No.135-QP-2015);the Creative Research Foundation of Science and Technology on Thermostructural Composite Materials Laboratory(No.6142911010304);Natural Science Basic Research Plan in Shanxi Province of China(No.2017JM5110);China Postdoctoral Science Foundation(No.2015M570853)

摘　　要：Different failure modes and morphologies were found in the chemical vapor infiltration(CVI) 2D C/SiC torque tubes with different thickness. To characterize the density and porosity of the ceramic matrix composite(CMC) torque tube, a CT test was conducted. The archimedes drainage method was used to measure the density and porosity, and by adopting FEM software, the stress distribution and failure strength of the ceramic matrix composite torque tubes were calculated. A universal material test machine was used to implement torsional tests. Different torsional behaviors of CMC torque tubes with two different thicknesses were showed in the stress-strain curves. To analyze the predominant failure factors, SEM was used to observe the failure morphologies and cracks. 5 mm thickness CMC torque tube has reasonable fracture morphologies and a higher maximum shear strength and modulus.Different failure modes and morphologies were found in the chemical vapor infiltration(CVI) 2 D C/SiC torque tubes with different thickness. To characterize the density and porosity of the ceramic matrix composite(CMC) torque tube, a CT test was conducted. The archimedes drainage method was used to measure the density and porosity, and by adopting FEM software, the stress distribution and failure strength of the ceramic matrix composite torque tubes were calculated. A universal material test machine was used to implement torsional tests. Different torsional behaviors of CMC torque tubes with two different thicknesses were showed in the stress-strain curves. To analyze the predominant failure factors, SEM was used to observe the failure morphologies and cracks. 5 mm thickness CMC torque tube has reasonable fracture morphologies and a higher maximum shear strength and modulus.

关 键 词：C/SIC TORQUE TUBE thickness TORQUE capacity FAILURE analysis 

分 类 号：TB3[一般工业技术—材料科学与工程]