3.5. Surface roughness measurement
Increasing roughness is a side effect of shot peening process. Surface state of non-peened, shot peened
specimens has been characterized in terms of surface roughness. Rz was the maximum height of the profile. The Rz
of the non-peened specimen was between 2.3ȝPWR3.9ȝP, while the Rz of the shot peened specimen was between
12.2ȝPWR15.7ȝP.