Abstract
There is an extensive body of research and texts on numerical simulation to obtain rheological properties of injection molded resins and composites, however to our knowledge there is no or little research on estimating velocity profile from fiber orientation mapping of GFRP-BMCs (glass fiber reinforced polymer bulk molding compounds). This study reports a simple analysis of specific laminar creep flow properties of highly-filled short-fiber GFRP-BMC through a dogbone specimen as a rectangular duct during injection molding from SEM fiber orientation mapping which is found to exhibit a 3-layer [skin-core-skin] structure resembling classical laminar flow through a conduit. Therefore, to characterize the BMC with extremely low Reynolds number ∼2 × 10−4, velocity profile, primary and secondary boundary layers were estimated from Hermans fiber orientation parameter across gauge section thickness.
