A hybrid model to determine mechanical properties of soft polymers by nanoindentation

In nanoindentation tests for soft polymers, the elastic modulus estimated from the Hertz model varies with applied force, implying the effect of adhesion work needs to be considered in contact theory. In this article, a hybrid method of combining the Hertz model and the Johnson–Kendall–Roberts (JKR)...

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Veröffentlicht in:Mechanics of materials 2010-12, Vol.42 (12), p.1043-1047
Hauptverfasser: Liao, Qinzhuo, Huang, Jianyong, Zhu, Tao, Xiong, Chunyang, Fang, Jing
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container_end_page 1047
container_issue 12
container_start_page 1043
container_title Mechanics of materials
container_volume 42
creator Liao, Qinzhuo
Huang, Jianyong
Zhu, Tao
Xiong, Chunyang
Fang, Jing
description In nanoindentation tests for soft polymers, the elastic modulus estimated from the Hertz model varies with applied force, implying the effect of adhesion work needs to be considered in contact theory. In this article, a hybrid method of combining the Hertz model and the Johnson–Kendall–Roberts (JKR) model is presented, to analytically explain the descending phenomenon of the modulus estimation by considering adhesive effects. Thus both the force-independent elastic modulus and the adhesion work can be evaluated by fitting the experimental data, without need to know the adhesive force in advance. The successful application to the measurement of polydimethylsiloxane (PDMS) material’s elastic modulus demonstrates the method is applicable to the mechanical characterization of soft polymers by nanoindentation.
doi_str_mv 10.1016/j.mechmat.2010.09.005
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subjects Adhesion
Adhesion tests
Adhesives
Applied sciences
Contact
Cross-disciplinary physics: materials science
rheology
Elastic modulus
Elasticity
Exact sciences and technology
Fundamental areas of phenomenology (including applications)
Materials science
Materials testing
Mathematical analysis
Mathematical models
Mechanical properties
Modulus of elasticity
Nanoindentation
Physical properties
Physics
Polymer
Polymer industry, paints, wood
Polymers
Properties and testing
Solid mechanics
Static elasticity (thermoelasticity...)
Structural and continuum mechanics
Technology of polymers
title A hybrid model to determine mechanical properties of soft polymers by nanoindentation
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