Crack Tip Opening Displacement
Measure of crack severity which can be compared against a critical value at the onset of failure.
Source: API Standard 2RD, Dynamic Risers for Floating Production Systems, Second Edition, September 2013. Global Standards
Crack Tip Opening Displacement (CTOD)
Measure of crack severity that can be compared against a critical value at the onset of crack propagation.
Source: API RP 17G, Recommended Practice for Completion/Workover Risers, Second Edition, July 2006 (Reaffirmed April 2011). Global Standards