Nanoscale mechanical characterization of PMMA by AFM nanoindentation: a theoretical study on the time-dependent viscoelastic recovery

作者：Ding, Y H; Deng, X H; Jiang, X; Zhang, P; Yin, J R^*; Jiang, Y

来源：Journal of Materials Science, 2013, 48(9): 3479-3485.

DOI：10.1007/s10853-013-7138-7

Temperature-dependent indent recovery of polymethyl methacrylate is depicted by atomic force microscopy. The viscoelastic indent recovery is predicted by a numerical model based on the Boussinesq elastic theory. From the perspective of an elastic solution, viscoelastic solution for stress and displacement field is constructed through the analysis of the elasticity-viscoelasticity corresponding theory. The findings also illustrate the effect of loading condition, elastic modulus, and viscosity on the viscoelastic recovery rate.

• 出版日期2013-5
• 单位湘潭大学