US Patent 7818881 Vehicle exhaust component assembly using magnetic pulse welding

A vehicle exhaust system is provided that includes a first exhaust member having an end that includes an enlarged section. A second exhaust member is sized to receive a portion of the first exhaust member. The enlarged section of the first exhaust member has an outer diameter that is larger than an inner diameter of at least one section of the second exhaust member for creating an interference condition between the first and second exhaust member to prevent axial movement of the first exhaust member in at least one axial direction. The first exhaust member is secured to the second exhaust member by magnetic pulse welding.