文档介绍：Designation: E 1820 – 05
Standard Test Method for
Measurement of Fracture Toughness1
This standard is issued under the fixed designation E 1820; 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 (e) indicates an editorial change since the last revision or reapproval.
1. Scope E8 Test Methods for Tension Testing of Metallic Materials
This test method covers procedures and guidelines for E21 Test Methods for Elevated Temperature Tension Tests
the determination of fracture toughness of metallic materials of Metallic Materials
using the following parameters: K, J, and CTOD (d). Tough- E 399 Test Method for Plane-Strain Fracture Toughness of
ness can be measured in the R-curve format or as a point value. Metallic Materials
The fracture toughness determined in accordance with this test E 813 Test Method for JIc, A Measure of Fracture Tough-
method is for the opening mode (Mode I) of loading. ness
The mended specimens are single-edge bend, E 1152 Test Method for Determining J-R Curves
[SE(B)], compact, [C(T)], and disk-pact, [DC(T)]. E 1290 Test Method for Crack-Tip Opening Displacement
All specimens contain notches that are sharpened with fatigue (CTOD) Fracture Toughness Measurement
cracks. E 1737 Test Method for J-Integral Characterization of Frac-
Specimen dimensional (size) requirements vary ac- ture Toughness
cording to the fracture toughness analysis applied. The guide- E 1823 Terminology Relating to Fatigue and Fracture
lines are established through consideration of material tough- Testing
ness, material flow strength, and the individual qualification E 1921 Test Method for Determination of Reference Tem-
requirements of the toughness value per values sought. perature, To, for Ferric Steels in Transition Range
The values stated in SI units are