Plastic air intake manifold joint strengths are investigated

摘要

Plastic manifolds produced using the vibration welding process are manufactured by welding several molded plastic pieces together into a final manifold assembly. The welding is performed by melting the joint area through frictional heat generated by the repeated rubbing action of the two pieces at the weld joint area. Parameters of the vibration welding process include the clamp force that is applied on the weld bead, vibration amplitude, and vibration frequency. As the Weld bead melts away from the interface, the lower head moves up until it reaches the pre-set displacement.