Some issues on nanoindentation method to measure the elastic modulus of particles in composites

被引：52

作者：

Yan, Wenyi ^{[1
]}

Pun, Chung Lun ^{[1
]}

Wu, Zonghui ^{[1
]}

Simon, George P. ^{[2
]}

机构：

[1] Monash Univ, Dept Mech & Aerosp Engn, Clayton, Vic 3800, Australia

[2] Monash Univ, Dept Mat Engn, Clayton, Vic 3800, Australia

来源：

COMPOSITES PART B-ENGINEERING | 2011年 / 42卷 / 08期

关键词：

Particle-reinforcement; Mechanical properties; Computational modelling; Nanoindentation; MECHANICAL-PROPERTIES; INSTRUMENTED INDENTATION; SPHERICAL INDENTATION; HARDNESS; DEPTH; LOAD;

D O I：

10.1016/j.compositesb.2011.05.002

中图分类号：

T [工业技术];

学科分类号：

120111 [工业工程];

摘要：

The application of the indentation method to measure the elastic modulus of particles embedded in a composite is theoretically investigated in this paper by finite element simulation. The Oliver-Pharr method, which is widely used in commercial nanoindentation instruments, is used to probe the elastic modulus of the particle from the simulated indentation curve. The predicted elastic modulus is then compared with the inputted value. Two cases are studied, that of a stiff particle embedded in a soft matrix and a soft particle embedded in a stiff matrix. In both of these cases, there exists a particle-dominated depth. If the indentation depth lies within this particle-dominated depth, the Oliver-Pharr method is able to be applied to measure the particle's elastic modulus with sufficient accuracy if the real contact area is used. This could lead to an experimentally-convenient method of determining the primary properties of individual particle, providing they can be well dispersed in the polymeric matrix. (C) 2011 Elsevier Ltd. All rights reserved.

引用

页码：2093 / 2097

页数：5

共 14 条

[1]

Influences of pileup on the measurement of mechanical properties by load and depth sensing indentation techniques [J].