Rheological behavior and fiber orientation in slit flow of fiber reinforced thermoplastics

1991 ◽  
Vol 12 (3) ◽  
pp. 137-145 ◽  
Author(s):  
A. T. Mutel ◽  
M. R. Kamal
Keyword(s):  
Rheological Behavior ◽  
Fiber Orientation ◽  
Fiber Reinforced ◽  
Slit Flow ◽  
Reinforced Thermoplastics ◽  
Fiber Reinforced Thermoplastics

scholarly journals Influence of the Initial Fiber Orientation on the Weld Strength in Welding of Glass Fiber Reinforced Thermoplastics

2016 ◽  
Vol 2016 ◽  
pp. 1-16 ◽  
Author(s):  
Isabel Fiebig ◽  
Volker Schoeppner
Keyword(s):  
Glass Fiber ◽  
Fiber Orientation ◽  
Weld Strength ◽  
Fiber Reinforced ◽  
Hot Plate ◽  
Glass Fiber Reinforced ◽  
Vibration Welding ◽  
Reinforced Thermoplastics ◽  
Fiber Reinforced Thermoplastics ◽  
Initial Fiber

The welding factors are significantly lower in welding of fiber reinforced thermoplastics than in welding of unreinforced thermoplastics due to the fiber orientation in the weld. This paper presents results from investigations on the influence of the initial fiber orientation on the weld strength in hot plate and vibration welding for glass fiber reinforced polypropylene and polyamide 6. Injection molded specimens are compared to specimens with main initial fiber orientation being longitudinal and transverse to the joining direction. The results of CT analysis of the fiber orientation in the weld show the opportunity to achieve a higher weld strength by using specimens with fibers being initially oriented longitudinally to the joining direction. The influence of the initial fiber orientation in the parts to be welded on the weld strength in hot plate welding is more distinct than in vibration welding.

Coupling of Mold Flow Simulations with Two-Scale Structural Mechanical Simulations for Long Fiber Reinforced Thermoplastics

2015 ◽  
Vol 825-826 ◽  
pp. 655-662 ◽  
Author(s):  
Fabian Buck ◽  
Barthel Brylka ◽  
Viktor Müller ◽  
Timo Müller ◽  
Andrew N. Hrymak ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Fiber Orientation ◽  
Mechanical Analysis ◽  
Fiber Reinforced ◽  
Micro Computed Tomography ◽  
Simulation Process ◽  
Orientation State ◽  
Orientation Tensors ◽  
Reinforced Thermoplastics ◽  
Fiber Reinforced Thermoplastics

The entire simulation process for long fiber reinforced thermoplastics is examined to determine the effective mechanical properties which are influenced by the microstructural fiber orientation state. Therefore, flow and fiber orientation simulations are conducted and the obtained fiber orientation tensors are used in two-scale structural simulations. The fiber orientation distributions as well as the mechanical properties are compared with micro-computed tomography data and results from threepoint bending tests performed by dynamical mechanical analysis (DMA), respectively. The validated results show that prediction of the essential mechanical properties is possible with the applied combinated methods and that the knowledge of the fiber orientation and its gradients is of crucial importance for the entire simulation process.

Prediction of fiber orientation in injection molded parts of short-fiber-reinforced thermoplastics

1990 ◽  
Vol 30 (16) ◽  
pp. 957-966 ◽  
Author(s):  
Takaaki Matsuoka ◽  
Jun-Ichi Takabatake ◽  
Yoshinori Inoue ◽  
Hideroh Takahashi
Keyword(s):  
Fiber Orientation ◽  
Short Fiber ◽  
Fiber Reinforced ◽  
Molded Parts ◽  
Injection Molded ◽  
Reinforced Thermoplastics ◽  
Fiber Reinforced Thermoplastics
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