Description / Abstract:
Purpose
This specification covers the requirements for inducing
compressive residual stresses on the surface of metal parts using
ultrasonically activated shot peening.
Applications
Ultrasonically activated shot peening is typically used to
induce compressive residual stresses on the surface layer of
metallic parts to a depth up to 0.040 inch (1 mm). The shape and
depth of the compressive residual stress distribution depend on the
properties of the part and the ultrasonically activated shot
peening process parameters. The residual stresses produced increase
fatigue performance, resistance to stress-corrosion cracking,
corrosion fatigue, and fretting fatigue, but its usage is not
limited to such applications.