In this work, the material distribution, structure of fiber orientation and fiber attrition in
sandwich and push-pull injection molded short fiber composites are investigated, regarding the
effect of fiber content and processing parameters, given its direct relevance to mechanical
properties. The prediction of the tensile strength of conventional, sandwich and push-pull
injection molded short fiber composites are derived by an analytical method of modified rule of
mixtures as a function of the area fraction between skin and core layers. The effects of fiber
length and fiber orientation on the tensile strength are studied in detail. Modeling of the
specialized injection molding processes have been developed and performed with the simulation
program in order to predict the material distribution and the fiber orientation state. The secondorder
orientation tensor (a11) approach is used to describe and calculate the local fiber
orientation state. The accuracy of the model prediction is verified by comparing with
corresponding experimental measurements to gain a further basic understanding of the melt flow
induced fiber orientation during sandwich and push-pull injection molding processes.
| Identifer | oai:union.ndltd.org:DRESDEN/oai:qucosa:de:qucosa:18623 |
| Date | 29 September 2006 |
| Creators | Patcharaphun, Somjate |
| Contributors | Mennig, Günter, Wortberg, Johannes, Wielage, Bernhard, Technische Universität Chemnitz |
| Source Sets | Hochschulschriftenserver (HSSS) der SLUB Dresden |
| Language | English |
| Detected Language | English |
| Type | doc-type:doctoralThesis, info:eu-repo/semantics/doctoralThesis, doc-type:Text |
| Source | Schriftenreihe Kunststoffe ; 5 |
| Rights | info:eu-repo/semantics/openAccess |
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