Results of mechanical and optical measurements in plasticized polyvinyl chloride under conditions of creep and relaxation at room temperature are discussed by the author

Isaac M. Daniel*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

8 Scopus citations

Abstract

This paper describes the results of mechanical and optical measurements in plasticized polyvinyl chloride under conditions of creep and relaxation at room temperature. It covers one task of a broader investigation aimed at developing experimental methods for viscoelastic stress analysis. The moiré method of strain analysis was found well suited for continuous recording of axial and transversal deformation in creep tests. The material exhibits linear viscoelastic behavior, both mechanical and optical. Strain, stress and birefringence measured from creep and relaxation tests gave straightline plots on log-log scale and, thus simple empirical formulas were possible to derive. The theoretical prediction that birefringence in a linear viscoelastic material not exhibiting flow can be expressed as a linear relationship of stress and strain was satisfactorily substantiated.

Original languageEnglish (US)
Pages (from-to)83-89
Number of pages7
JournalExperimental Mechanics
Volume5
Issue number3
DOIs
StatePublished - Mar 1 1965

ASJC Scopus subject areas

  • Mechanics of Materials
  • Computational Mechanics

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