Journal Published Online: 01 September 1998
Volume 26, Issue 5

A Computer Program to Aid in Fatigue Precracking of Fracture Toughness Test Specimens



Fatigue precracking prior to fracture toughness and fatigue tests ensures a sharp crack ahead of the notch tip. The precracking procedure is outlined in ASTM Standards E 399-78a (Standard Test Method for Plane-Strain Fracture Toughness of Metallic Materials). E813-89 (Standard Test Method for JIC, A Measure of Fracture Toughness), and E-1152-87 (Standard Test Method for Determining J-R Curves). This paper describes an interactive computer program that accepts material properties and specimen dimensions as program input. The program output when plotted graphically suggests an easy and practical precracking procedure adhering to the standards mentioned above. The program is useful in the absence of a computer-controlled testing facility. The program listout is given in the Appendix.

Author Information

Sriharsha, HK
Bhabha Atomic Research Centre, Trombay, Mumbai, India
Anantharaman, S
Bhabha Atomic Research Centre, Trombay, Mumbai, India
Chatterjee, S
Bhabha Atomic Research Centre, Trombay, Mumbai, India
Pandey, RK
Indian Institute of Technology, New Delhi, India
Pages: 14
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Stock #: JTE12033J
ISSN: 0090-3973
DOI: 10.1520/JTE12033J