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

E. Lucon; M. L. Martin; B. L. Calvo; X. Chen; M. A. Sokolov

doi:10.1520/JTE20220691

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

E. Lucon, M. L. Martin, B. L. Calvo, X. Chen, M. A. Sokolov

Advanced Nuclear Materials

Research output: Contribution to journal › Article › peer-review

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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.

Original language	English
Journal	Journal of Testing and Evaluation
Volume	51
Issue number	5
DOIs	https://doi.org/10.1520/JTE20220691
State	Published - Sep 1 2023

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© 2023 ASTM International. All rights reserved.

Keywords

ASTM E2298
ISO 14556
image analysis
instrumented Charpy testing
scanning electron microscope
shear fracture appearance

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10.1520/JTE20220691

Cite this

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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.",

keywords = "ASTM E2298, ISO 14556, image analysis, instrumented Charpy testing, scanning electron microscope, shear fracture appearance",

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AU - Lucon, E.

AU - Martin, M. L.

AU - Calvo, B. L.

AU - Chen, X.

AU - Sokolov, M. A.

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

Abstract

Bibliographical note

Keywords

UN SDGs

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