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topic 3512

Aluminum finish and fatigue life


(1999)

I am looking for some information on how much the condition of an aluminum substrate's polished surface, prior to being coated, would be a factor in fatigue life.

Kenny Rump
Memphis, Tennessee


February 19, 2009

Hi, Kenny. I don't think it's possible to take a qualitative term like 'polished' and then get it's quantitative impact. But you can shot peen the surface and get an improvement in fatigue life.

Regards,

Ted Mooney, finishing.com Teds signature
Ted Mooney, P.E. RET
finishing.com
Pine Beach, New Jersey



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