scholarly journals Prediction of the mechanical properties of long fiber reinforced thermoplastics

2020 ◽  
Author(s):  
Fabian Willems ◽  
Christian Bonten
Keyword(s):  
Mechanical Properties ◽  
Fiber Reinforced ◽  
Reinforced Thermoplastics ◽  
Fiber Reinforced Thermoplastics

Effect of Press Condition on the Mechanical Properties of GFRTP Molded by the Melted Thermoplastic-Resin Transfer Molding

2018 ◽  
Vol 774 ◽  
pp. 367-372
Author(s):  
Kazuto Tanaka ◽  
Akihiro Hirata ◽  
Tsutao Katayama
Keyword(s):  
Mechanical Properties ◽  
Shell Structure ◽  
Low Cost ◽  
Resin Transfer Molding ◽  
Outer Shell ◽  
Fiber Reinforced ◽  
Thermoplastic Resin ◽  
Transfer Molding ◽  
Reinforced Thermoplastics ◽  
Fiber Reinforced Thermoplastics

The application of Fiber Reinforced Thermoplastics (FRTP) is expected to reduce the weight of automobiles. The press and injection hybrid molding method was developed to mold FRTP with high strength and high stiffness by giving complicated shapes such as ribs and bosses to the outer shell structure of FRTP with continuous fiber. However, as this method uses high-cost FRTP laminated sheets, it is necessary to develop a low-cost FRTP manufacturing process. In this study, we aim at the development of Melted Thermoplastic-Resin Transfer Molding (MT-RTM) to mold FRTP with complicated shape at low cost by injecting melted short fiber reinforced thermoplastics into dry fabric. The effects of press condition on the mechanical properties of GFRTP molded by MT-RTM were clarified by bending tests. GFRTP molded at high mold temperature and high closing speed showed high mechanical properties because of good impregnation of injection resin into continuous fabric in the outer shell structure.

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.

scholarly journals A new numerical method for the tensile property analysis of discontinuous fiber-reinforced thermoplastics

2021 ◽  
Vol 30 ◽  
pp. 2633366X2097749
Author(s):  
Dawei Zhang ◽  
Peng Qu ◽  
Yuxi Jia
Keyword(s):  
Mechanical Properties ◽  
Carbon Fiber ◽  
Fiber Orientation ◽  
Particle Model ◽  
Fiber Reinforced ◽  
Discontinuous Fiber ◽  
Model Size ◽  
Reinforced Thermoplastics ◽  
Fiber Reinforced Thermoplastics ◽  
Good Agreement

For predicting the mechanical properties of discontinuous carbon fiber-reinforced thermoplastics (DCFRTP), it is essential to consider the microstructure, including the fiber orientation and the properties of the constituting materials. In the present study, a heterogeneous particle model, considering the microscopic factors, is constructed on the basis of the peridynamic (PD) theory to investigate the tensile properties of DCFRTP. Two kinds of randomly oriented DCFRTP, with different constituents and volume fractions of carbon fiber, are used for the verification of this numerical model. A comparison between the PD simulations and the experimental results shows a good agreement. The effect of the model size on the prediction is discussed.

Sign in / Sign up

Export Citation Format

Share Document