By doing so, weld current and force is focused into the small area of the projection, and heat is obtained from the resistance to the flow of the welding current. Due to this heat, the projections collapse and the parts are weld together. Another successful welding technique is capacitor discharge stud welding, which uses weld studs or specially formed bolts for welding instead of projections.
Definition of inert. 1  1 : lacking the power to move. 2  2 : very slow to move or act : sluggish. 3  3 : deficient in active properties; especially : lacking a usual or anticipated chemical or biological action.
Inhere \In*here\, v. i. [imp. & p. p. Inhered; p. pr. & vb. n. Inhering.] [L. inhaerere; pref. in- in + haerere to stick, hang. See Hesitate.] To be inherent; to stick (in); to be fixed in or permanently incorporated with something; to cleave (to); to belong, as attributes or qualities. [1913 Webster] They do but inhere in the subject that supports them.