Table 2-1. Flaw Detection - CONT
Quenching cracks -
Ruptures produced in the tempering of metal due to
uneven cooling and contracting of one portion of a part.
Service cracks -
Ruptures that occur on a part after all fabrication has
been completed and the part placed in service. Failure
may be due to fatigue, corrosion, overstressing, or
undetected processing discontinuities.
Table 2-2. Honeycomb, Fiberglass, and Composite Defects
Unbonds or voids in an outer skin-to-
Unbonds or voids at the adhesive-to-core
Voids between layers of a laminate.
Voids in foam adhesive or unbonds between
the adhesive and a closure member at core -
to-closure member joints
Water in the core.