SURFACE FEATURES FOR LOCATING NET SUBSTRATE BUTTONS TO ENABLE SELF-PIERCING RIVETING (SPR) ON BRITTLE AND LOW TOUGHNESS MATERIALS

摘要

A dimpled substrate for use in an assembly having joined substrates is provided that defines at least one preformed interior cavity, at least one preformed exterior profile adjacent the interior cavity and defining a wall therebetween, and at least one locating feature configured to identify a location of the at least one preformed exterior profile. In one form, the locating feature is disposed in the preformed exterior profile or adjacent to the preformed exterior profile. Alternatively, the locating feature is a notch formed into the dimpled substrate away from the preformed exterior profile.