首页 | 本学科首页   官方微博 | 高级检索  
     


Measurement of transverse permeability using gaseous and liquid flow
Affiliation:1. Center for Composite Materials, University of Delaware, Newark, DE 19716, United States;2. Department of Civil and Environmental Engineering, University of Delaware, Newark, DE 19716, United States;3. Department of Material Science and Engineering, University of Delaware, Newark, DE 19716, United States;4. Department of Electrical and Computer Engineering, University of Delaware, Newark, DE 19716, United States;1. Polymer & Composite Engineering (PaCE) Group, Department of Chemical Engineering, Imperial College London, London SW7 2AZ, United Kingdom;2. Departments of Chemistry and Materials, Imperial College London, London SW7 2AZ, United Kingdom;3. The Composites Centre, Department of Aeronautics, Imperial College London, SW7 2AZ, United Kingdom;4. School of Aerospace Engineering, Universiti Sains Malaysia, Malaysia;5. Polymer & Composite Engineering (PaCE) Group, Institute for Materials Chemistry and Research, Faculty of Chemistry, University of Vienna, Währingerstr. 42, Vienna A-1090, Austria;1. Department of Aerospace Engineering, Khalifa University of Science and Technology, Abu Dhabi, United Arab Emirates;2. Centre for Future Materials, University of Southern Queensland, Toowoomba, QLD, 4350, Australia
Abstract:Accurate measurement of transverse permeability is important for processes such as resin film infusion and vacuum-assisted resin transfer molding. In these liquid composite molding processes the out-of-plane flow is dominant and thus the transverse permeability is needed for flow prediction. This paper introduces an apparatus to measure saturated permeability for fibrous preforms using both gaseous and liquid flow. The setup creates a uniform one-dimensional flow through-the-thickness of the reinforcement by integrating a high permeability layer on the mold surfaces. A wide range of permeability as a function of fiber volume fraction can be measured in one experiment while applying a known load under a hydraulic testing machine. The system has been designed using process simulation. The measurements using the gaseous medium are comparable to the saturated fluid flow results. The measurement system can also be used to measure changes in dry fabric permeability prior to infusion due to debulking or application of binders on the fabric surface.
Keywords:
本文献已被 ScienceDirect 等数据库收录!
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号