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Poisson's ratio for rigid plastic foams
Author(s) -
Rinde J. A.
Publication year - 1970
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.1970.070140801
Subject(s) - poisson's ratio , polystyrene , materials science , compression (physics) , expanded polystyrene , poisson distribution , tension (geology) , composite material , yield (engineering) , polyurethane , compression ratio , strain (injury) , polymer , thermodynamics , mathematics , physics , statistics , medicine , internal combustion engine
Poisson's ratio for several low‐density plastic foams has been determined in both tension and compression. For polystyrene bead foams and a polyurethane foam, Poisson's ratio is greater in tension than compression. In compression, Poisson's ratio is not linear, showing a larger value below the yield strain and a value near zero for high strains. For 0.05 and 0.10 g/cc polystyrene bead foam, Poisson's ratios are 1/3 in tension and 1/4 in compression below the yield strain; at higher strains, the value in compression is in the range 0.03–0.07.