Work Item
ASTM WK89244

Revision of E1820-23b Standard Test Method for Measurement of Fracture Toughness

Rationale

Improve guidance related to prevention of ductile instabilities in Note A9.2 such as:
.Specimen stiffness can also be decreased by increasing a/W and/or reducing the size of the specimen within the allowable size limits.
.Tests with ductile instabilities are conservative, but inadequate representations of the measurement and changes should be made to mitigate instabilities with future tests.
Also require reporting of test machine stiffness and test machine servo-control input signal in Section 10.

Details

Developed by Subcommittee: E08.07

Committee: E08

Staff Manager: Brian Milewski

Work Item Status

Date Initiated: 01-15-2024

Technical Contact: Brian Hall