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environmental stress cracking |
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environmental stress cracking [in¦vī·ərn¦mənt·əl ′stres ‚krak·iŋ] (mechanics) The susceptibility of a material to crack or craze in the presence of surface-active agents or other factors. How to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit webmaster's page for free fun content. |
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| Polyether polyurethanes, while hydrolytically stable, are subject to oxidative degradation in several forms, including environmental stress cracking and metal ion oxidation. There was no sign of environmental stress cracking in the grafts, which has historically hampered the use of polyurethanes for long-term implantable devices such as vascular grafts. High levels of stress also lower a product's impact strength and can contribute to environmental stress cracking and diminished performance at high or cycling temperatures. |
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