Influence of the Geometry on Unstable Crack Extension and Determination of Dynamic Fracture Mechanics Parameters

GC Angelino

doi:10.1520/STP27400S

SYMPOSIA PAPER Published: 01 January 1977

STP27400S

Influence of the Geometry on Unstable Crack Extension and Determination of Dynamic Fracture Mechanics Parameters

Source

The dynamic fracture toughness of the high-strength steel VCN-100 (UNI 38 NiCrMo4) is derived from tests on TPB 9 (three-point-bend) specimens. A wide range of crack velocities was obtained by changing the ER (energy ratio) of the specimen at crack instability; the crack velocity was evaluated from load versus time records during crack propagation. The results show a dependence of K_ID on crack velocity in good agreement with literature data.

Author Information

Angelino, GC

Materials Engineering Section, Mechanics Division, Centro Informazioni Studi Esperienze, Segrate Milano, Italy

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Details

Developed by Committee: E08

Pages: 392–407

DOI: 10.1520/STP27400S

ISBN-EB: 978-0-8031-4700-3

ISBN-13: 978-0-8031-0341-2

Influence of the Geometry on Unstable Crack Extension and Determination of Dynamic Fracture Mechanics Parameters

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