Measurement of Young’s Modulus of Thermal Barrier Coatings by Suspended Coupled Flexural Resonance Method

摘要：

　　Thermal barrier coatings(TBCs) has been extensively used on hot section components of gas turbine engine,especially turbine blades.Young’s modulus of TBCs is a significant mechanical parameter in life prediction research of turbine blades,but it is hard to measure the EB-PVD thermal barrier coatings by conventional tensile/compression method for its brittleness and porous microstructure.Therefore,Young’s modulus mathematical model of double-layer beam structure specimen was deduced on the basis of the first-order beam bending vibration equation and composite beam bending equation.An experimental platform with dynamic signal acquisition system was set up for measuring Youngs modulus of thermal barrier coatings under high temperature.Youngs modulus of ceramic coat was measured from ambient temperature to 1100℃ to provide material data for subsequent research on life prediction of turbine blades with thermal barrier coatings.

关键词： Thermal barrier coatings Electron-beam physical vapor deposition Suspended coupled flexural resonance Youngs modulus

作者: ZHANG Shenzhi QI Hongyu YANG Hongwei ZHANG Chengcheng GAO Jingyun

作者单位: School of Energy and Power Engineering,Beihang University,Beijing 100191,China AVIC Commercial Aircraft Engine Co. Ltd,Shanghai 200241,China

会议类型: 国际会议

会议名称: 2016 International Symposium on Structural Integrity，ISSI—2016(2016国际结构完整性研讨会)

会议地点: 天津

会议语种:英文

页码: 436-440

在线出版日期: 2016-05-26（万方平台首次上网日期，不代表论文的发表时间）