Compression and tensile properties of self-reinforced poly(ethylene terephthalate)-composites
2013 (English)In: Polymer testing, ISSN 0142-9418, E-ISSN 1873-2348, Vol. 32, no 2, 221-230 p.Article in journal (Refereed) Published
Tensile and compression properties of self-reinforced poly(ethylene terephthalate) (SrPET) composites has been investigated. SrPET composites or all-polymer composites have improved mechanical properties compared to the bulk polymer but with maintained recyclability. In contrast to traditional carbon/glass fibre reinforced composites, SrPET composites are very ductile, resulting in high failure strains without softening or catastrophic failure. In tension, the SrPET composites behave linear elastically until the fibre-matrix interface fails, at which point the stiffness starts decreasing. As the material is further strained, strain hardening occurs and the specimen finally fails at a global strain above 10%. In compression, the composite initially fails through fibre yielding, and at higher strains through fibre bending. The stress-strain response is reminiscent of an elastic-perfectly plastic material with a high strain to failure (typically over 10%). This indicates that SrPET composites are not only candidates as semi-structural composites but also as highly efficient energy absorbing materials.
Place, publisher, year, edition, pages
Elsevier, 2013. Vol. 32, no 2, 221-230 p.
Compression testing, Mechanical properties, Polymer-matrix composite, Self-reinforced
Research subject SRA - Production
IdentifiersURN: urn:nbn:se:kth:diva-116487DOI: 10.1016/j.polymertesting.2012.11.002ISI: 000316513300009ScopusID: 2-s2.0-84872065467OAI: oai:DiVA.org:kth-116487DiVA: diva2:589906
ProjectsCentre of ECO2 Vehicle Design
FunderXPRES - Initiative for excellence in production researchVINNOVA
QC 201302132013-01-212013-01-212015-10-12Bibliographically approved