Prediction of instability in ductile senb fracture toughness specimens

✍ Scribed by C. G. Chipperfield

• Publisher: Springer Netherlands
• Year: 1977
• Tongue: English
• Weight: 701 KB
• Volume: 13
• Category: Article
• ISSN: 1573-2673
• DOI: 10.1007/bf00034327

✦ Synopsis

A B S T R A C T An approximate flow stress model is proposed as a possible explanation of the variability observed for maximum load values of crack opening displacement (COD) and pseudo -J integral measurements in small specimens of fully ductile material. The model presented is limited to test pieces which exhibit ductile crack initiation after general yielding and more accurately describes low work hardening materials. However, the predictions of the dependency of such "toughness" parameters on specimen size are shown to be consistent with documented data.