الفهرس 
State of the ArtOnly 14 pages are availabe for public view
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Abstract
The present work presents a scientific contribution towards better understanding and
prediction of the draping behavior of woven fabrics for their potential use in polymer
composite systems. The draping behavior describes the deformation behavior implying
the ease of which the reinforcing fibers will conform to the required geometry. This
allows the prediction of deformation defects in woven composites manufactured with
hand lay-up or liquid molding processes. The thesis focuses on the study of natural
Egyptian Jute fabrics, for which the current use is limited to packaging applications.
The aim of the study is to investigate the potential use of these fabrics as continuous
reinforcement systems by comparison of their characteristics with the well established
synthetic glass fibers. Therefore, several types of plain weave jute and glass fibers
with variations of densities and woven structure were considered. Experiments for the
characterization of the physical and mechanical properties of the studied fibers were
performed. In a further step, experiments were conducted for the characterization
of the deformation behavior of fabrics over single and double curvature molds. The
correlation between woven fabric properties and their deformation behavior was analyzed.
Finally, numerical analysis based on Finite Element modeling was implemented
for the prediction of draping behavior of fibers. For this purpose, the operation of the
draping simulation software PamForm2G was investigated. Moreover, by comparison
to experimental results, important model variables which have significant effects on
simulation accuracy were identified. The achieved understanding of the model parameters
provides more accurate predictions which allow optimization of the composite
forming process.