The J integral fracture toughness and damage zone morphology in polyethylenes

H. Swei; B. Crist; S. H. Carr

doi:10.1016/0032-3861(91)90424-H

The J integral fracture toughness and damage zone morphology in polyethylenes

H. Swei, B. Crist^*, S. H. Carr

^*Corresponding author for this work

Materials Science and Engineering

Research output: Contribution to journal › Article › peer-review

17 Scopus citations

Abstract

The J integral analysis of compact tension samples has been used to evaluate plane strain fracture toughness of various polyethylenes at room temperature. Crack propagation commences from a razor notch in high-density polyethylene at J_Ic = 1.7 kJ m^-2. Plastic deformation is confined to a small craze region (about 300 μm long, 20 μm high) through which the crack subsequently propagates. A tough copolymer of PE3408 material resists crack advance until J_Ic = 8.2 kJ m^-2. Here again crack propagation is through a craze, though craze length exceeds 1 mm. Toughness is also imparted by the formation of shear bands near the notch tip. Low-density polyethylene does not really fracture under the present test conditions; this material responds by general yielding and blunting of the notch tip.

Original language	English (US)
Pages (from-to)	1440-1446
Number of pages	7
Journal	Polymer
Volume	32
Issue number	8
DOIs	https://doi.org/10.1016/0032-3861(91)90424-H
State	Published - 1991

Keywords

fracture toughness
morphology
polyethylenes

ASJC Scopus subject areas

Organic Chemistry
Polymers and Plastics
Materials Chemistry

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10.1016/0032-3861(91)90424-H

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title = "The J integral fracture toughness and damage zone morphology in polyethylenes",

abstract = "The J integral analysis of compact tension samples has been used to evaluate plane strain fracture toughness of various polyethylenes at room temperature. Crack propagation commences from a razor notch in high-density polyethylene at JIc = 1.7 kJ m-2. Plastic deformation is confined to a small craze region (about 300 μm long, 20 μm high) through which the crack subsequently propagates. A tough copolymer of PE3408 material resists crack advance until JIc = 8.2 kJ m-2. Here again crack propagation is through a craze, though craze length exceeds 1 mm. Toughness is also imparted by the formation of shear bands near the notch tip. Low-density polyethylene does not really fracture under the present test conditions; this material responds by general yielding and blunting of the notch tip.",

keywords = "fracture toughness, morphology, polyethylenes",

author = "H. Swei and B. Crist and Carr, {S. H.}",

note = "Funding Information: ACKNOWLEDGEMENTS This research was supported by the Gas Research InstituteB, asicS cienceD ivision( ContracNt o. 5084-260-1051). We thank Professor B. Moran for helpful discussionsa nd Dr L. Wild for the molecular-weight determinations.",

year = "1991",

doi = "10.1016/0032-3861(91)90424-H",

language = "English (US)",

volume = "32",

pages = "1440--1446",

journal = "Polymer",

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publisher = "Elsevier BV",

number = "8",

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T1 - The J integral fracture toughness and damage zone morphology in polyethylenes

AU - Swei, H.

AU - Crist, B.

AU - Carr, S. H.

N1 - Funding Information: ACKNOWLEDGEMENTS This research was supported by the Gas Research InstituteB, asicS cienceD ivision( ContracNt o. 5084-260-1051). We thank Professor B. Moran for helpful discussionsa nd Dr L. Wild for the molecular-weight determinations.

PY - 1991

Y1 - 1991

N2 - The J integral analysis of compact tension samples has been used to evaluate plane strain fracture toughness of various polyethylenes at room temperature. Crack propagation commences from a razor notch in high-density polyethylene at JIc = 1.7 kJ m-2. Plastic deformation is confined to a small craze region (about 300 μm long, 20 μm high) through which the crack subsequently propagates. A tough copolymer of PE3408 material resists crack advance until JIc = 8.2 kJ m-2. Here again crack propagation is through a craze, though craze length exceeds 1 mm. Toughness is also imparted by the formation of shear bands near the notch tip. Low-density polyethylene does not really fracture under the present test conditions; this material responds by general yielding and blunting of the notch tip.

AB - The J integral analysis of compact tension samples has been used to evaluate plane strain fracture toughness of various polyethylenes at room temperature. Crack propagation commences from a razor notch in high-density polyethylene at JIc = 1.7 kJ m-2. Plastic deformation is confined to a small craze region (about 300 μm long, 20 μm high) through which the crack subsequently propagates. A tough copolymer of PE3408 material resists crack advance until JIc = 8.2 kJ m-2. Here again crack propagation is through a craze, though craze length exceeds 1 mm. Toughness is also imparted by the formation of shear bands near the notch tip. Low-density polyethylene does not really fracture under the present test conditions; this material responds by general yielding and blunting of the notch tip.

KW - fracture toughness

KW - morphology

KW - polyethylenes

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DO - 10.1016/0032-3861(91)90424-H

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SP - 1440

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JO - Polymer

JF - Polymer

IS - 8

ER -

The J integral fracture toughness and damage zone morphology in polyethylenes

Abstract

Keywords

ASJC Scopus subject areas

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