magnetic particle testing mpt, or magnetic particle inspection, is a non destructive examination nde technique used to detect

american asme close closeup color construction control defects destructive detect display equipment equipments examination examining ferromagnetic flaws hand hands horizontal image images industrial industry inspection inspector magnet magnetic material materials metal mpt nde ndt non nondestructive one particle person photography professianal quality slightly steel subsurface surface technique test testing tool used weld welded welding welds work worker working yoke