Nanoindentation creep of nonlinear viscoelastic polypropylene

doi:10.1016/j.polymertesting.2015.02.006

IMECH-IR > 非线性力学国家重点实验室

	Nanoindentation creep of nonlinear viscoelastic polypropylene
其他题名	POLYMER TESTING
	Peng GJ; Ma Y; Feng YH(冯义辉); Huan Y(郇勇); Qin CJ; Zhang TH; Zhang, TH (reprint author), 18 Chaowang Rd, Hangzhou 310014, Zhejiang, Peoples R China.
发表期刊	POLYMER TESTING
	2015-06
卷号	43 页码:38-43
ISSN	0142-9418
摘要	Uniaxial tensile creep tests at various applied stresses were carried out to demonstrate that PP is nonlinear viscoelastic. A novel phenomenological model consisting of springs, dashpots, stress-locks and sliders was proposed to describe the nonlinear viscoelasticity. Indentation creep tests at different applied load levels were also performed on nonlinear viscoelastic PP. It was found that the shear creep compliance varies with the applied load level when the applied load is less than 5 mN, which means the indentation creep behavior was nonlinear. To find the real reason for the nonlinearity in indentation creep tests, the elastic modulus at various indentation depths was measured using continuous stiffness measurements (CSM). By analyzing the variation of elastic modulus with indentation depth, the nonlinearity of indentation creep behavior was proved to be caused by the non-uniform properties in the surface of the specimen rather than nonlinear viscoelasticity. (C) 2015 Elsevier Ltd. All rights reserved.
关键词	Nonlinear Viscoelasticity Creep Compliance Nanoindentation Polypropylene
DOI	10.1016/j.polymertesting.2015.02.006
URL	查看原文
收录类别	SCI ; EI
语种	英语
WOS记录号	WOS:000353854400006
关键词[WOS]	INSTRUMENTED INDENTATION ; SENSING INDENTATION ; PLASTIC SOLIDS ; POLYMERS ; BEHAVIOR ; MODULUS ; LOAD
WOS研究方向	Materials Science ; Polymer Science
WOS类目	Materials Science, Characterization & Testing ; Polymer Science
项目资助者	National Natural Science Foundation of China [11402233, 11025212, 11272318, 11372323, 11302231]
课题组名称	LNM实验平台
论文分区	一类
引用统计	被引频次：16[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://dspace.imech.ac.cn/handle/311007/49980
专题	非线性力学国家重点实验室
通讯作者	Zhang, TH (reprint author), 18 Chaowang Rd, Hangzhou 310014, Zhejiang, Peoples R China.
推荐引用方式 GB/T 7714	Peng GJ,Ma Y,Feng YH,et al. Nanoindentation creep of nonlinear viscoelastic polypropylene[J]. POLYMER TESTING,2015,43:38-43.
APA	Peng GJ.,Ma Y.,Feng YH.,Huan Y.,Qin CJ.,...&Zhang, TH .(2015).Nanoindentation creep of nonlinear viscoelastic polypropylene.POLYMER TESTING,43,38-43.
MLA	Peng GJ,et al."Nanoindentation creep of nonlinear viscoelastic polypropylene".POLYMER TESTING 43(2015):38-43.

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