Journal
JOURNAL OF POLYMER SCIENCE PART B-POLYMER PHYSICS
Volume 48, Issue 13, Pages 1516-1525Publisher
WILEY
DOI: 10.1002/polb.22043
Keywords
creep; damage zone; fracture; mechanical properties; modeling; necking; polyamides; porosity; semicrystalline polymers; tensile tests; voids; X-ray tomography
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In this study an attempt is made to link the damage and microstructural evolution of semicrystalline polymers, in particular polyamide 6, to the macroscopic material behavior during tensile and creep tests. Tensile specimens, removed before failure were seen to have undergone striction. They were examined using synchrotron radiation tomography. These samples showed elongated axisymmetric columns of voids separated by thin ligaments of material. These observations were confirmed and refined through a cryofractography experiment of a different tensile sample, stopped before failure. An attempt was made to obtain quantitative data about void volume fraction and morphology through image analysis. (C) 2010 Wiley Periodicals, Inc. J Polym Sci Part B: Polym Phys 48: 1516-1525, 2010
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