TY - GEN
T1 - Study on the influences on fiber micro-structure variations and the connection to final shrinkage/warpage on long fiber reinforced thermoplastics (FRT) parts
AU - Huang, Chao Tsai
AU - Hsu, Chia
AU - Yeh, Cherng En
AU - Chen, Yi Sheng
AU - Hwang, Sheng Jye
AU - Peng, Hsin Shu
AU - Wu, Chih Che
AU - Tu, Chun I.
N1 - Funding Information:
The authors would like to thank Ministry of Science and Technology of Taiwan, R.O.C. (Project number: MOST 106-2622-E-006 -013 -CC1) for partly financially supporting for this research.
Publisher Copyright:
© 2019 Author(s).
PY - 2019/2/6
Y1 - 2019/2/6
N2 - Because of its great potential and capability, the fiber-reinforced thermoplastics (FRT) material and technology have been widely utilized into industry recently. However, due to the microstructures of fiber inside plastic matrix are very complex, they are not easy to be visualized. The connection from microstructures to the final shrinkage/warpage is still not fully understood yet. In this study, we have performed a benchmark with three standard specimens based on ISO 527 where those specimens have different gate designs. Due to the geometrical effect, the warpage behaviors are quite different for those three specimens. Specifically, it pushes one specimen warped downward and bended inward, another warped upward, and the other slightly upward at the same time. The difference might be due to the interaction of the entrance effect of molten plastic with fiber content to cause high asymmetrical fiber orientation distribution (FOD). Moreover, the experimental study is also performed to validate the simulation results. From short shot testing to the warpage and bending measurement for each individual model, overall, the tendency for both numerical simulation and experimental results is in a reasonable agreement. However, to get better understand between the microstructures of the fibers and the final shrinkage/warpage, it still needs for further more study.
AB - Because of its great potential and capability, the fiber-reinforced thermoplastics (FRT) material and technology have been widely utilized into industry recently. However, due to the microstructures of fiber inside plastic matrix are very complex, they are not easy to be visualized. The connection from microstructures to the final shrinkage/warpage is still not fully understood yet. In this study, we have performed a benchmark with three standard specimens based on ISO 527 where those specimens have different gate designs. Due to the geometrical effect, the warpage behaviors are quite different for those three specimens. Specifically, it pushes one specimen warped downward and bended inward, another warped upward, and the other slightly upward at the same time. The difference might be due to the interaction of the entrance effect of molten plastic with fiber content to cause high asymmetrical fiber orientation distribution (FOD). Moreover, the experimental study is also performed to validate the simulation results. From short shot testing to the warpage and bending measurement for each individual model, overall, the tendency for both numerical simulation and experimental results is in a reasonable agreement. However, to get better understand between the microstructures of the fibers and the final shrinkage/warpage, it still needs for further more study.
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U2 - 10.1063/1.5088281
DO - 10.1063/1.5088281
M3 - Conference contribution
AN - SCOPUS:85061600204
T3 - AIP Conference Proceedings
BT - Proceedings of PPS-34
A2 - Liu, Shih-Jung
PB - American Institute of Physics Inc.
T2 - 34th International Conference of the Polymer Processing Society, PPS 2018
Y2 - 21 May 2018 through 25 May 2018
ER -