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A sensitive mechanical test for slow crack growth in polyethylene
Author(s) -
Lu Xici,
Zhou Zhiqiang,
Brown Norman
Publication year - 1997
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.11839
Subject(s) - materials science , composite material , polyethylene , ultimate tensile strength , enhanced data rates for gsm evolution , tensile testing , uniaxial tension , morphology (biology) , telecommunications , genetics , biology , computer science
Slow crack growth (SCG) in a wide variety of polyethylenes has been investigated by a constant tensile load test (the PENT test) for a single edge notched specimen. The PENT test is very sensitive to the changes in molecular structure and morphology of polyethylene. The resistance to SCG depends on the density of the tie molecules and the strength of the crystals.