DETERMINATION OF THE FRACTURE-TOUGHNESS OF POLYMERIC FILMS BY THE ESSENTIAL WORK METHOD

被引：118

作者：

CHAN, WYF ^{[1
]}

WILLIAMS, JG ^{[1
]}

机构：

[1] UNIV LONDON IMPERIAL COLL SCI TECHNOL & MED,DEPT MECH ENGN,EXHIBIT RD,LONDON SW7 2BX,ENGLAND

来源：

POLYMER | 1994年 / 35卷 / 08期

关键词：

FRACTURE TOUGHNESS; POLYMERIC FILMS; ESSENTIAL WORK METHOD;

D O I：

10.1016/0032-3861(94)90840-0

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

Complete ligament yielding before crack advance is one of the criteria in the essential work method. It is found that this criterion also holds when the essential work method is used to obtain the fracture toughness of polymeric films. This is done by using two specimen geometries to test each of two nylons. The criterion is then used to find the fracture toughness of three polyethylenes, a cast, amorphous poly(ethylene terephthalate) and two kaptons. In addition, the effects of specimen width and strain rate on the specific essential work of fracture w(e) are studied.

引用

页码：1666 / 1672

页数：7

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