SYMPOSIA PAPER Published: 01 January 1993

Evaluation of Dynamic Fracture Toughness Using the Normalization Method


This paper presents a simple technique to determine dynamic J-R curves from a single, precracked Charpy-type specimen by means of an instrumented Charpy testing machine. This technique is based on the normalization method proposed originally by Landes and Herrera. This method eliminates the need for crack length monitoring that makes it particularly suitable under dynamic loading conditions.

The method used to generate J-R curves consisted of conducting precracked Charpy tests using a stop block. This simple device allows interruption of the test before the specimen is completely broken, furnishing the two calibration points necessary for applying the normalization method. J-R curves obtained with the normalization method were compared with values calculated following the multiple specimen technique.

Author Information

Herrera, R
Center for Industrial Research, Campana, Argentina
Carcagno, G
Center for Industrial Research, Campana, Argentina
de Vedia, LA
Fundacion Latinoamericana de Soldadura, Buenos Aires, Argentina
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Developed by Committee: E08
Pages: 168–184
DOI: 10.1520/STP24269S
ISBN-EB: 978-0-8031-5241-0
ISBN-13: 978-0-8031-1867-6