Correct Answers
CTOD Crack tip opening displacement
Cu. Copper
CVN. Charpy V-Notch
D. Pipe outer diameter (in. or mm)
DAC. Distance amplitude correction
DC. direct current
dn. J integral to CTOD conversion factor (unitless)
DWE. Double-wall exposure.
DWV. Double-Wall viewing
, D/t Pipe diameter-to-wall thickness ratio
E. Engineering critical assessment
ESI. Elongated slag inclusion
EU. Undercutting adjacent to the cover pass
EW. Electric resistance or electric induction weld
FAC. Failure assessment curve
FAD. Failure assessment diagram
HAZ. Heat-affected zone
HB. Hollow Bead porosity
H2S. hydrogen sulfide
i number it cyclic stress, from 1 to K