Segmented Compression Molding for Composite Manufacture
In the present study a new technique of vacuum assisted resin transfer molding (VARTM), called segmented compression molding (SCM), is proposed to improve filling process. In the method, a double-bag is placed between the upper mold and the cavity, and each bag is controlled individually. Through the vacuum pulling the double-bag upward, resin is easily infused into the loose preform. After the completion of resin infusion, the resin inlet is closed. The vacuum on the bags are sequentially released to atmospheric pressure, the inflated bags squeeze the surplus resin from the wetted preform toward dry loose preform and the filling process is thus reduced. This study is to introduce the SCM, model the filling process and explore the surface quality of the SCM parts. Results show that the SCM filling process is decreased by using a high initial cavity thickness. As compared with transfer resin transfer molding (RTM) and typical VARTM, SCM can reduce the filling process in the work. The surface roughness of SCM part approximates that of VARTM, but it is much inferior to that of RTM.
M. Allende, R. V. Mohan, and S. M. Walsh, “Experimental and numerical analysis of flow behavior in the FASTRAC liquid composite manufacturing process,” Polymer Composites, vol. 25, no. 4, pp. 384-396, July 2004.
J. Alms and S. G. Advani, “Simulation and experimental validation of flow flooding chamber method of resin delivery in liquid composite molding,” Composites Part A: Applied Science and Manufacturing, vol. 38, no. 10, pp. 2131-2141, October 2007.
J. B. Alms, A. Catry, J. L. Glancey, and S. G. Advani, “Flow modification process for vacuum infusion using port-based resin flow control,” SAMPE Journal, vol. 45, no. 2, pp. 54-63, March 2009.
D. Heider, P. Simacek, A. Dominauskas, et al. “Infusion design methodology for thick-section, low-permeability preforms using inter-laminar flow media,” Composites Part A: Applied Science and Manufacturing, vol. 38, no. 2, pp. 525-534, February 2007.
C. Y. Chang, “Experimental analysis of mold filling in vacuum assisted compression resin transfer molding,” Journal of Reinforced Plastics and Composites, vol. 31, no. 23, pp. 1630-1637, October 2012.
C. Y. Chang and S. Y. Li, “Effect of process parameters on the surface quality of air cushion method,” Journal of Reinforced Plastics and Composites, vol. 34, no. 3, pp. 257-266, January 2015.
C. Y. Chang and W. R. Chen, “Experimental study of progressive compression method of resin delivery in liquid composite molding,” Proceedings of Engineering and Technology Innovation, vol. 2, pp. 23-25, 2016.
Submission of a manuscript implies: that the work described has not been published before that it is not under consideration for publication elsewhere; that if and when the manuscript is accepted for publication. Authors can retain copyright of their article with no restrictions. Also, author can post the final, peer-reviewed manuscript version (postprint) to any repository or website.
Since Oct. 01, 2015, PETI will publish new articles with Creative Commons Attribution Non-Commercial License, under The Creative Commons Attribution Non-Commercial 4.0 International (CC BY-NC 4.0) License.
The Creative Commons Attribution Non-Commercial (CC-BY-NC) License permits use, distribution and reproduction in any medium, provided the original work is properly cited and is not used for commercial purposes