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A novel hysteresis test for studying crazing and shear yielding in rubber‐toughened polymers
Author(s) -
Bucknall C. B.,
Marchetti A.
Publication year - 1984
Publication title -
polymer engineering and science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.503
H-Index - 111
eISSN - 1548-2634
pISSN - 0032-3888
DOI - 10.1002/pen.760240805
Subject(s) - crazing , materials science , composite material , ultimate tensile strength , polystyrene , polymer , hysteresis , dumbbell , natural rubber , tensile testing , acrylonitrile butadiene styrene , stress (linguistics) , deformation (meteorology) , tension (geology) , shear (geology) , medicine , linguistics , philosophy , physics , quantum mechanics , physical therapy
Tensile, tensile impact, compact tension, and fatigue tests were carried out on ABS (acrylonitrile‐butadiene‐styrene), HIPS (high impact polystyrene), and toughened PMMA (poly(methyl methacrylate)). Dumbbell specimens machined from test pieces were then subjected to sinusoidal tension‐compression cycling at low stress amplitudes. The HIPS specimens produced asymmetrical hysteresis loops characteristic of multiple crazing, whereas PMMA gave more symmetrical, regularly shaped, loops. The behavior of the ABS polymers varied with loading history. It was concluded that the hysteresis test provides a useful additional technique for studying deformation mechanisms, especially under conditions that do not readily permit volumetric measurements.