Frictional weld joint for an article comprising a thermoplastic material

An article comprising a thermoplastic material, said article comprising:

• a first body portion having a first nominal wall thickness and a first joint surface;
• a second body portion having a second nominal wall thickness and a second joint surface substantially parallel to said first joint surface;
• a frictional weld joint disposed between said first and second joint surfaces with said frictional weld joint having a total bead height defined between said first and second joint surfaces, said frictional weld joint comprising;
• a first bead coupled to and extending axially from said first joint surface defining a first bead height;
• and
• a second bead coupled to and extending axially from said second joint surface and coupled to said first bead for coupling the first and second body portions together with a final second bead height defined between said first bead and said second joint surface;
• wherein a ratio of said total bead height to at least one of said first and second nominal wall thicknesses is from about 1.60 to about 5.50;
• wherein said total bead height is of from about 6.5 to about 9.5 millimeters;
• wherein said second body portion includes a first flash dam and a second flash dam each extending from said second joint surface with said second flash dam spaced from said first flash dam with said second bead spaced from and disposed between said flash dams;
• and
• wherein said flash dams have a thickness of from about 0.50 to about 4.00 millimeters.