FRP厚度方向滲透率量測與樹脂模流分析之應用
Trans-plane Permeability measure of FRP and Its Applications of Mold Flow Simulation.
Date Issued
2007
Date
2007
Author(s)
Fuh, Shenq-Feng
DOI
zh-TW
Abstract
Polymer composite material plays an important role in the industry. With its great physical properties we can produce high performance manufactures. SCRIMP (Seemann Composite Resin Infusion Molding Process) a novel polymer processing technique uses the vacuum pressure to tighten the resin with fibers, reduces bubbles from the original hand-lay-up procedure. It also improves the working environments, workers will not contact the resin for too long time and vapor of toxic chemicals will not directly damage workers’ health while processing.
During SCIMP processing initiator will be added, and it will start to cure the resin in a short period of time. It would be an important subject to know how to arrange the injection gate and the venting port. If we settled wrongfully, products might have some defects. The worst case is that the product becomes a waste and increases manufacture cost. To prevent this kind of situation simulation is needed. RTM-Worx is one of those convenient finite element analysis programs; it’s based on D model to precede the analysis. With this software we can obtain the duration to complete injection of a ship. Since many injection arrangements can be easily simulated, choosing one with best performance will not be a big problem.
But simulation of SCRIMP process can only perform in the surface; there is no detail about what’s inside the stack. And actually in the real SCRIMP process there is distribution media placed on top of the fibers; these greatly differentiate flow in the surface and the bottom. Deviation of this will give errors to the whole process. Measurement of trans-plane permeability would be of great importance to be cared.
Besides, we can combine the trans-plane permeability and the in-plane permeability of pure fibers to predict the permeability of stacks in SCRIMP process, and no extra pre-experiment will be needed to the SCRIMP arrangement. In this research, we propose a method to simulate the mold flow process with in-plane and trans-plane permeability of pure materials. Obtaining the top and bottom surface permeability will no longer need experiments, and simulation of large structures can easily achieved with this pre-simulation method.
Subjects
真空灌注
厚度方向滲透率
流動預估
Vacuum injection
transplane permeability
flow prediction
SDGs
Type
thesis
File(s)![Thumbnail Image]()
Loading...
Name
ntu-96-R94549022-1.pdf
Size
23.53 KB
Format
Adobe PDF
Checksum
(MD5):3725e19307aff42c51a699c39836d15b