Experimental Verification of the and Equivalent Energy Methods for the Evaluation of the Fracture Toughness of Steels

B Marandet; G Sanz

doi:10.1520/STP35555S

SYMPOSIA PAPER Published: 01 January 1977

STP35555S

Experimental Verification of the and Equivalent Energy Methods for the Evaluation of the Fracture Toughness of Steels

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The critical value J_Ic and the apparent fracture toughness K_Bd are measured with a single small specimen (compact tension or three-point-bend bar) loaded in the elastic-plastic range. Initiation is detected during loading by an electrical potential method.

For the steels studied here (2.25Cr-1Mo, electroslag weld, manganese cast steel), the K_Ic values deduced from J_Ic are in agreement with the K_Ic values directly measured with thick specimens in the transition-temperature range. Furthermore, the equivalent energy procedure gives the same results as those obtained by the J-integral method.

Author Information

Marandet, B

Institut de Recherches de la Sidérurgie Francaise, Saint Germain en Laye, France

Sanz, G

Institut de Recherches de la Sidérurgie Francaise, Saint Germain en Laye, France

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Developed by Committee: E08

Pages: 462–476

DOI: 10.1520/STP35555S

ISBN-EB: 978-0-8031-4703-4

ISBN-13: 978-0-8031-0356-6

Experimental Verification of the and Equivalent Energy Methods for the Evaluation of the Fracture Toughness of Steels

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