Speaker
Description
Injection molding of short fiber reinforced thermoplastics enables affordable production of complex geometries. Therefore, injection molded components conquer more and more the section of structural parts, especially in the automotive industry. The combination of lightweight material, efficient processing and design freedom is favorable. To increase mechanical performance and reliability deep knowledge of the material properties in the component is necessary.
Despite the short fiber length, a pronounced anisotropy characterizes the material behavior. Therefore, local fiber orientation needs to be considered in material characterization as well as component design and stress analysis. This paper presents the analytical chain from specimen preparation to consideration of local properties in component design depending on the microstructure. The nature of the injection molding process reveals a core-shell layered structure with changing fiber orientation and different degrees of anisotropy. This internal structure must be taken into account when resolving the measured engineering values from the specimen data. The proposed concept relates mechanical values to the local fiber orientation.
The availability of engineering values as a function of the microstructure of short fiber reinforced thermoplastics enables more precise and reliable design and stress analysis of structural components. Application of the analytical process will be presented by examples from practice.
| Speaker Country | Germany |
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