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|Title:||Fiber orientation in divergent/convergent fows in expansion and compression injection molding|
|Author(s):||Silva, Cristina A.|
Viana, J. C.
Hattum, F. W. J. van
Cunha, A. M.
|Abstract(s):||This study compares the fiber orientation patterns of short glass fiber-reinforced polypropylene developed in conventional and nonconventional injection molding, the latter using a special mold, RCEM (rotation, compression, and expansion mold). This mold allows for a wide variety of operating modes during mold filling, which leads to a great versatility in obtaining different fiber orientation patterns. By incorporating through-thickness convergent and divergent flows during the filling stage (compression and expansion modes, respectively), the fiber orientation can be tailored. These linear dynamics can be superimposed with a simultaneous rotational movement of one of the mold surfaces. These combined actions induce a high fiber orientation transversely to the radial flow direction, this effect being more pronounced in the expansion mode.|
|Access:||Restricted access (UMinho)|
|Appears in Collections:||IPC - Artigos em revistas científicas internacionais com arbitragem|
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|49. Fiber Orientation in Divergent_Convergent Flows in Expansion and Compression Injection Molding.pdf|
|1,17 MB||Adobe PDF||View/Open|