Fig. 2
From: Parametric study of piercing force and surface quality in elastomer-assisted tube piercing

(a) Schematic of the tube piercing process using a polyurethane tool, including die parameters, (b) Components of the die.
From: Parametric study of piercing force and surface quality in elastomer-assisted tube piercing

(a) Schematic of the tube piercing process using a polyurethane tool, including die parameters, (b) Components of the die.