Standard Test Methods for PlaneStrain Fracture （标准测试方法PlaneStrain骨折）.PDF

Designation: D 5045 – 99 AMERICAN SOCIETY FOR TESTING AND MATERIALS 100 Barr Harbor Dr., West Conshohocken, PA 19428 Reprinted from the Annual Book of ASTM Standards. Copyright ASTM Standard Test Methods for Plane-Strain Fracture Toughness and Strain Energy Release Rate of Plastic Materials1 This standard is issued under the fixed designation D 5045; the number immediately following the designation indicates the year of original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A superscript epsilon () indicates an editorial change since the last revision or reapproval. 1. Scope * 2. Referenced Documents 1.1 These test methods are designed to characterize the 2.1 ASTM Standards: toughness of plastics in terms of the critical-stress-intensity D 638 Test Method for Tensile Properties of Plastics2 factor, KIc , and the energy per unit area of crack surface or D 4000 Classification System for Specifying Plastic Mate- critical strain energy release rate, GIc , at fracture initiation. rials3 1.2 Two testing geometries are covered by these test meth- E 399 Test Method for Plane-Strain Fracture Toughness of ods, single-edge-notch bending (SENB) and compact tension Metallic Materials4 (CT). E 691 Practice for Conducting an Interlaboratory Study to 1.3 The scheme used assume