Development of a micro-indentation device for measuring the mechanical properties of soft materials

Development of a micro-indentation device for measuring the mechanical properties of soft materials

Indentation is a simple and nondestructive method to measure the mechanical properties of soft materials, such as hydrogels, elastomers and soft tissues. In this work, we have developed a micro-indentation system with high-precision to measure the mechanical properties of soft materials, where the s...

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Veröffentlicht in:Theoretical and applied mechanics letters 2013-01, Vol.3 (5), p.23-26, Article 054004
Hauptverfasser: He, Xiang, Wang, Pengfei, Huang, Guoyou, Liu, Shaobao, Xu, Minglong, Xu, Feng, Lu, TianJian
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Sprache:eng
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mechanical properties
micro-indentation
relaxation curve
soft materials
剪切模量
力学性能
微压痕
机械性能
测量系统
聚二甲基硅氧烷
设备发展
软质材料
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container_end_page 26
container_issue 5
container_start_page 23
container_title Theoretical and applied mechanics letters
container_volume 3
creator He, Xiang
Wang, Pengfei
Huang, Guoyou
Liu, Shaobao
Xu, Minglong
Xu, Feng
Lu, TianJian
description Indentation is a simple and nondestructive method to measure the mechanical properties of soft materials, such as hydrogels, elastomers and soft tissues. In this work, we have developed a micro-indentation system with high-precision to measure the mechanical properties of soft materials, where the shear modulus and Poisson＇s ratio of the materials can be obtained by analyzing the load relaxation curve. We have validated the accuracy and stability of the system by comparing the measured mechanical properties of a polyethylene glycol sample with that obtained from a commercial instrument. The mechanical properties of another typical polydimethylsiloxane sample submerged in heptane are measured by using conical and spherical indenters, respectively. The measured values of shear modulus and Poisson＇s ratio are within a reasonable range.
doi_str_mv 10.1063/2.1305404
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subjects mechanical properties
micro-indentation
relaxation curve
soft materials
剪切模量
力学性能
微压痕
机械性能
测量系统
聚二甲基硅氧烷
设备发展
软质材料
title Development of a micro-indentation device for measuring the mechanical properties of soft materials
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