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Nanoindentation creep of nonlinear viscoelastic polypropylene
Alternative TitlePOLYMER 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.
Source PublicationPOLYMER TESTING
2015-06
Volume43Pages:38-43
ISSN0142-9418
AbstractUniaxial 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.
KeywordNonlinear Viscoelasticity Creep Compliance Nanoindentation Polypropylene
DOI10.1016/j.polymertesting.2015.02.006
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Indexed BySCI ; EI
Language英语
WOS IDWOS:000353854400006
WOS KeywordINSTRUMENTED INDENTATION ; SENSING INDENTATION ; PLASTIC SOLIDS ; POLYMERS ; BEHAVIOR ; MODULUS ; LOAD
WOS Research AreaMaterials Science ; Polymer Science
WOS SubjectMaterials Science, Characterization & Testing ; Polymer Science
Funding OrganizationNational Natural Science Foundation of China [11402233, 11025212, 11272318, 11372323, 11302231]
DepartmentLNM实验平台
Classification一类
Citation statistics
Document Type期刊论文
Identifierhttp://dspace.imech.ac.cn/handle/311007/49980
Collection非线性力学国家重点实验室
Corresponding AuthorZhang, TH (reprint author), 18 Chaowang Rd, Hangzhou 310014, Zhejiang, Peoples R China.
Recommended Citation
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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