Testing to generate fracture mechanics data
crack
growth rates
commonly
performed
the compact tension
specimen. A notch is introduced
aligned
direction of interest
region-specific data
toughness
critical
parameter
fracture-mechanics based
fitness-for-service assessments
toughness
the literature
properties
databases
preferable
determine
experiment
particular
assessed
generated
relatively
inexpensive
provide
qualitative
ductility
relatively
detect
volumetric
lack
of weld penetration.
etched
identify various
regions of interest.
typically
the Charpy (V-notch)
accurately
assessed
the Izod
more sophisticated
Crack Tip Opening Displacement (CTOD)
eliminates
the region of interest
developed
a new technique
evaluate
friction stir welded specimens.