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Uniaxial tensile properties underlying plane‐stress rapid fracture resistance in polyethylene
Author(s) -
Özbek Pemra,
Leevers Patrick
Publication year - 2008
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.21159
Subject(s) - materials science , charpy impact test , composite material , ultimate tensile strength , modulus , stress (linguistics) , strain hardening exponent , polyethylene , fracture (geology) , tensile testing , linguistics , philosophy
Developers of polyethylene grades for pressure pipe seek a deeper understanding of the resistance of these materials to high rate, plane‐stress fracture. The Reversed Charpy and ASTM F 2231 “Thin Charpy” test methods are designed to index this property, at appropriately high rates, for quality control and material development purposes. This article demonstrates the possibility of deriving equivalent information from a procedure based on tensile drawing tests, via two more basic material properties—yield stress and strain hardening modulus—which are more accessible to polymer design. POLYM. ENG. SCI., 2008. © 2008 Society of Plastics Engineers