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Rapid flexural creep and engineering analysis for product design of a propylene copolymer
Author(s) -
Aloisio Charles J.,
Cammons R. R.
Publication year - 1974
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.760140306
Subject(s) - flange , materials science , flexural strength , creep , composite material , copolymer , deformation (meteorology) , polymer
The flexural creep compliance of a propylene copolymer was determined as a function of time and temperature using stresses of less than 700 psi. Equilibrium compliances of 2.82 × 10 −5 , 3.80 × 10 −5 , and 4.47 × 10 −5 in 2 /lb at 75, 140, and 168°F respectively, are predicted. The data are used to characterize a flanged pressure chamber. Deflections due to flange opening deformation modes predicted for life times in excess of 40 years indicate the need for flange reinforcement.