Today's KNOWLEDGE Share:Crazing Effect on Polymers

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Today's KNOWLEDGE Share

Polymer crazing does not immediately imply failure or loss of properties.


Due to fibrillar content, crazes can show a strength similar to the non-crazed material. Highly oriented fibrils can actually develop higher strength than the bulk material, so that stress at break may be retained.


On the other end, crazes are significant defects that will usually compromise elongation at break or impact performance, or drive a quicker failure in Fatigue, where fibrils are repeatedly beaten up, particularly at low or negative R ratios.


Source:Vito leo

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#polymers #crazingeffect #failure #propertieschange

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