Nanoindentation Techniques: A Critical Assessment of the Current Methods of Data Analysis

Munawar M. Chaudhri; Yong Yee Lim

doi:10.4028/www.scientific.net/KEM.345-346.1107

Paper Titles

Powdering in Coating Layer of Galvannealed Nb-Ti Free Extra Low Carbon Steel Sheet
p.1089

Diameter Expansion Deformation Behaviors of Midair Shaft under Various Processing Conditions
p.1093

Material Properties of Thick Aluminum Coating Made by Cold Gas Dynamic Spray Deposition
p.1097

Micro-Incremental Forming of Ti and Au Foils by Indentation Method
p.1101

Nanoindentation Techniques: A Critical Assessment of the Current Methods of Data Analysis
p.1107

An Electrical Method for Measuring Fatigue and Tensile Properties of Thin Films on Substrates
p.1115

Application of Stress Analysis by Digital Image Correlation and Intelligent Hybrid Method to Unidirectional CFRP Laminate
p.1121

Residual Stress Estimation with Identification of Stress Directionality Using Instrumented Indentation Technique
p.1125

Characterization of Polymer Adhesion through Modified JKR Theory and Instrumented Indentation Technique
p.1129

HomeKey Engineering MaterialsKey Engineering Materials Vols. 345-346Nanoindentation Techniques: A Critical Assessment...

Nanoindentation Techniques: A Critical Assessment of the Current Methods of Data Analysis

Abstract:

Although instrumented indentation machines have existed since the 1950s, it is only during the past 20 years or so that there has been a very rapid rise in their use and popularity for determining mechanical properties of bulk solids, thin films and biological materials. Nowadays, machines are available with which indentation experiments are conducted automatically and the data obtained are also analyzed automatically using software, which is based on certain hypotheses and simplifying assumptions. By carrying out several series of comprehensive experiments, using rigid and elastic indenters and elastic substrates, it is shown that the current methods of nanoindentation data analysis are fundamentally flawed, which can lead to incorrect and misleading results. A new experimental approach has been suggested here, which is free from such flaws.