INCREASING THE RIGIDITY OF THERMOPLASTIC BULK MOLDING COMPOUND COMPOSITE BUMPER BEAMS USING ORIENTED COMPOSITE SHEETS

Paper #:
  • 970487

Published:
  • 1997-02-24
Citation:
Greene, J. and St. John, C., "INCREASING THE RIGIDITY OF THERMOPLASTIC BULK MOLDING COMPOUND COMPOSITE BUMPER BEAMS USING ORIENTED COMPOSITE SHEETS," SAE Technical Paper 970487, 1997, https://doi.org/10.4271/970487.
Pages:
15
Abstract:
The stiffness of randomly oriented, thermoplastic bulk molding compound (TP-BMC) composites can be increased in a 3-point loading test through the use of commingled thermoplastic materials. Bumper beams for a typical midsize vehicle produced from combinations of these 2 materials were molded and tested using a static bumper test setup that measures the applied load and resulting deflection. A design of experiments investigation based on the Taguchi methods [1] were used to compare the effects of 4 material and processing variables on static load. The optimum levels for each variable were found to achieve maximum load at 25 mm deflection, which led to a manufacturing strategy for selectively increasing the stiffness of TP-BMC composites for bumper beams. This paper details the development work.
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