Journal Published Online: 22 March 2023
Volume 51, Issue 5

Assessment of Different Approaches for Measuring Shear Fracture Appearance in Charpy Tests

CODEN: JTEVAB

Abstract

Different approaches for establishing shear fracture appearance (SFA) on tested Charpy specimens were assessed and compared, namely (in order of increasing expected accuracy) estimates based on characteristic forces from instrumented Charpy tests, optical measurements using image analysis software, and measurements performed with the aid of a scanning electron microscope. Comparisons between different SFA values for 129 instrumented Charpy tests currently included in the National Institute of Standards and Technology database allowed us to establish the relationships between the different available approaches and formulate recommendations for the revision of the standards ASTM E2298-18, Standard Test Method for Instrumented Impact Testing of Metallic Materials, and ISO 14556:2015, Metallic Materials — Charpy V-Notch Pendulum Impact Test — Instrumented Test Method, which currently provide four empirical correlations that can be used to estimate SFA.

Author Information

Lucon, E.
National Institute of Standards and Technology, Boulder, CO, USA
Martin, M. L.
National Institute of Standards and Technology, Boulder, CO, USA
Calvo, B. L.
The University of Memphis, Memphis, TN, USA
Chen, X.
Department of Materials Science and Technology, Oak Ridge National Laboratory, Oak Ridge, TN, USA
Sokolov, M. A.
Department of Materials Science and Technology, Oak Ridge National Laboratory, Oak Ridge, TN, USA
Pages: 14
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Stock #: JTE20220691
ISSN: 0090-3973
DOI: 10.1520/JTE20220691