A practical method for simultaneous determination of Poisson's ratio and Young's modulus of elasticity of thin films

作者：Sun Jun yi^*; Hu Jian li; Zheng Zhou lian; He Xiao ting; Geng Huan huan

来源：Journal of Mechanical Science and Technology, 2011, 25(12): 3165-3171.

DOI：10.1007/s12206-011-1002-y

• Axisymmetric deformation
• Thin film
• Poisson's ratio
• Young's modulus of elasticity
• Bulge test
• Blister test

In this paper, based on the exact analytical solution of axisymmetric deformation of the circular membrane fixed at its edge under the action of uniformly-distributed loads, we propose a new method to be able to simultaneously determine Poisson's ratio and Young's modulus of elasticity for thin films. We also present a set of exact formulas used far simultaneously determining Poisson's ratio and Young's modulus of elasticity for free-standing thin films or coating thin films without residual stresses or pre-tension. This method has the advantages of simplicity and reliability, and it doesn't involve the substrate effect.

• 出版日期2011-12
• 单位重庆大学