Elastic properties of injection molded short glass fiber reinforced thermoplastic composites

2020 ◽  
Vol 254 ◽  
pp. 112850
Author(s):  
Yucheng Zhong ◽  
Ping Liu ◽  
Qingxiang Pei ◽  
Viacheslav Sorkin ◽  
Athanasius Louis Commillus ◽  
...  
Keyword(s):  
Glass Fiber ◽  
Elastic Properties ◽  
Thermoplastic Composites ◽  
Fiber Reinforced ◽  
Short Glass Fiber ◽  
Glass Fiber Reinforced ◽  
Injection Molded ◽  
Short Glass

scholarly journals Comparison of Real and Simulated Fiber Orientations in Injection Molded Short Glass Fiber Reinforced Polyamide by X‑ray Microtomography

Polymers ◽  
2021 ◽  
Vol 14 (1) ◽  
pp. 29
Author(s):  
Rafał Żurawik ◽  
Julia Volke ◽  
Jan-Christoph Zarges ◽  
Hans-Peter Heim
Keyword(s):  
Glass Fiber ◽  
Process Parameters ◽  
Fiber Orientation ◽  
Fiber Reinforced ◽  
X Ray ◽  
The Real ◽  
Short Glass Fiber ◽  
Glass Fiber Reinforced ◽  
Injection Molded ◽  
Short Glass

During injection molding of short glass fiber reinforced composites, a complex structure is formed due to the fiber movement. The resulting fiber orientation can be predicted using various simulation models. However, the models are known to have inadequacies andthe influence of process and model parameters is not clearly and comprehensively described. In this study, the aforementioned model and process parameters are investigated to determine the dependencies of the individual influences on the real and simulated fiber orientation. For this purpose, specimens are injection molded at different process parameters. Representative regions of the specimens are measured using X-ray microtomography and dynamic image analysis to determine the geometric properties of the fibers as well as their orientations. Furthermore, simulations are performed with the simulation software Moldflow® using different mesh types and densities as well as varying parameters of the MRD model to represent the real fiber orientations. The results show that different orientation areas arise in the samples, which cannot be represented with a simulation varying only one parameter. Several simulations must be carried out in order to represent flow regions occurring in the specimen as realistically as possible.

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