Dear sir,
I'm from india doing postgraduation in mechanical engineering .In my project work we performed shotpeening on wrought Al 1100 (ultimate strength = 156 Mpa)by glass bead and pressure 1 kgf/cm2 with nozzle tip distance of 4 in and exposure time of 40 sec .My specimen surface finish was deteriorated by shotpeening and fatigue testing on these specimen shows reduced fatigue life.How this can be possible? Please help me to understand this and give your valuable suggestion for it .
THANKING YOU.
