Standard Test Method for Determination of Resistance to Stable Crack Extension under Low-Constraint Conditions
|Publication Date:||1 July 2012|
|ICS Code (Mechanical testing of metals):||77.040.10|
This standard covers the determination of the resistance to stable crack extension in metallic materials in terms of the critical crack-tip-opening angle (CTOA), ψc and/or the crackopening displacement (COD), δ5 resistance curve (1).2 This method applies specifically to fatigue pre-cracked specimens that exhibit low constraint (crack-size-to-thick
Materials that are evaluated by this standard are not limited by strength, thickness, or toughness, if the crack-sizeto- thickness (a/B) ratio and the ligament-to-thicknes
The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.
This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use.
This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
2 The boldface numbers in parentheses refer to the list of references at the end of this standard.