sorry, I think this is the third time I have tryed to send this message...
for some reason it is not showing up
this is the last time i promise
The question I want to ask is how important is to reach T2 before the end of the shot peening cycle?
I know that when we create a saturation curve we determine the saturation point (T1) and using calculations we determine T2.
I know that to determine T2, we must double the exposure time but only have an increase of 10% intensity, which makes me believe T2 is 200% coverage.
This is my dilemma...
In creating a shot peen program to peen complex parts we will have multiple test blocks, which means multiple saturation curves. Getting them to all reach exactly T2 without exceeding T2 on some of the locations is very difficult. I am able to achieve the intensity range on the drawing but the T2 range is rarely in the location I need it to be, occurring either before or after the final intensity.
1. Is it necessary to have all the intensities on the part reach T2 on the saturation curves at the end of the program?
2. When the drawings ask for 200% coverage is it ok to exceed T2?
3. If we go over T2 are we creating undue stresses to the part by over peening?
Any advice would be appreciated, thanks.