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A fracture mechanics approach to characterising the environmental stress cracking behaviour of thermoplastics
File | Description | Size | Format | |
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TAFMEC special issue final submitted copy for Sympletic.docx | Accepted version | 953.24 kB | Microsoft Word | View/Open |
Title: | A fracture mechanics approach to characterising the environmental stress cracking behaviour of thermoplastics |
Authors: | Kamaludin, MA Patel, Y Williams, JG Blackman, BRK |
Item Type: | Journal Article |
Abstract: | Environmental stress cracking (ESC) is known to affect certain thermoplastics and occurs under simultaneous exposure to both applied stress and a hostile environment. The combination of these can cause a crack to form from a flaw in the material; upon reaching a critical size, the crack may accelerate thus causing catastrophic failure in the component. Various tests have been utilised to measure the resistance of different polymers to ESC, but these are often material- and application-specific and overlook the different stages of the failure process. In the present work, a fracture mechanics approach has been developed and applied, with a view to developing a test method that has wide applicability and provides both insight into the failure mechanisms as well as information for engineering design. Experimental results are presented for the following polymer-environment combinations: linear low-density PE in Igepal solution, HIPS in sunflower oil, and PMMA in methanol. It is shown that the representation of the results in the form of G versus crack velocity and G versus time can distinguish between materials of varying ESC resistance, identify the important regions of the failure process, and enable component life prediction. |
Issue Date: | 9-Jun-2017 |
Date of Acceptance: | 7-Jun-2017 |
URI: | http://hdl.handle.net/10044/1/49864 |
DOI: | https://dx.doi.org/10.1016/j.tafmec.2017.06.005 |
ISSN: | 0167-8442 |
Publisher: | Elsevier |
Start Page: | 373 |
End Page: | 380 |
Journal / Book Title: | Theoretical and Applied Fracture Mechanics |
Volume: | 92 |
Copyright Statement: | © 2017 Elsevier Ltd. All rights reserved. All rights reserved. This manuscript is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International http://creativecommons.org/licenses/by-nc-nd/4.0/ |
Keywords: | Science & Technology Technology Engineering, Mechanical Mechanics Engineering Environmental Stress cracking Thermoplastics Fracture mechanics Compliance POLYMERS GROWTH POLYETHYLENE 0102 Applied Mathematics 0905 Civil Engineering 0913 Mechanical Engineering Mechanical Engineering & Transports |
Publication Status: | Published |
Appears in Collections: | Mechanical Engineering Faculty of Engineering |