Single fibre deformation and strain distribution in single polyethylene terephthalate fibre/polypropylene matrix model composites

S.W. Lam, Xiaoming Tao, T.X. Yu

Research output: Chapter in book / Conference proceedingConference article published in proceeding or bookAcademic researchpeer-review

Abstract

Micro-mechanical properties of single Poly(ethylene terephthalate) (PET) fibre embedded in polypropylene (PP) matrix model composites are described in details. Raman microscopy was employed to investigate the deformation process of single PET fibres during mechanical straining, distribution of thermal residual strain and fibre strain subjected to composite stretching. The Raman band at 1616cm-1, which is very sensitive to molecular straining, was examined in details. It was found that the Raman band shift to lower wavenumber by –0.21cm-1/%strain during fibre deformation up to fibre fracture. This strain sensitivity is used to determine the thermal residual strain of the embedded fibre and variation of fibre strain subjected to composite strain. The point-to-point variation of thermal residual strain was mapped along the embedded PET in matrix and the average value was measured as –2.0%, implying an axial compressive strain developed in the embedded fibre in matrix. Variation of embedded fibre strain with the composite stretching was described and improvement on fibre interface by plasma treatment was observed the delay on massive interfacial failure
Original languageEnglish
Title of host publication[Missing Source Name from PIRA]
Publication statusPublished - 2001
EventAsian Textile Conference [ATC] -
Duration: 1 Jan 2001 → …

Conference

ConferenceAsian Textile Conference [ATC]
Period1/01/01 → …

Keywords

  • Textile composites
  • Raman microscopy
  • Thermal residual strain
  • Strains

Cite this