Do your processes actually cause the laminations, or does the material come with them already there? If you're at the steel mill then you're responsible, but if all you're doing is slitting or other processing of it, just validate the results of the processes you're doing.
BTW, I assume this is a subsurface defect. Would ultrasonic testing be able to pick this defect up?
BTW, I assume this is a subsurface defect. Would ultrasonic testing be able to pick this defect up?