ASTM E 1820-15 Standard Test Method for Measurement of Fracture Toughness

Publisher: ASTM
Publish Date: 2015
Pages: 54
Language: English
Format: PDFDocument Scope1.1 This test method covers procedures and guidelines for
the determination of fracture toughness of metallic materials
using the following parameters: K, J, and CTOD (δ). Toughness
can be measured in the R-curve format or as a point value.
The fracture toughness determined in accordance with this test
method is for the opening mode (Mode I) of loading.
NOTE 1—Until this version, KIc could be evaluated using this test
method as well as by using Test Method E399. To avoid duplication, the
evaluation of KIc has been removed from this test method and the user is
referred to Test Method E399.
1.2 The recommended specimens are single-edge bend,
[SE(B)], compact, [C(T)], and disk-shaped compact, [DC(T)].
All specimens contain notches that are sharpened with fatigue
cracks.