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.

Dynamic mechanical properties of sisal fiber reinforced polyester composites fabricated by resin transfer molding

2009 ◽  
Vol 30 (6) ◽  
pp. 768-775 ◽  
Author(s):  
P.A. Sreekumar ◽  
Redouan Saiah ◽  
Jean Marc Saiter ◽  
Nathalie Leblanc ◽  
Kuruvilla Joseph ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Resin Transfer Molding ◽  
Dynamic Mechanical Properties ◽  
Sisal Fiber ◽  
Fiber Reinforced ◽  
Transfer Molding ◽  
Dynamic Mechanical ◽  
Polyester Composites

STUDY ON COOLING RATE-DEPENDENT MECHANICAL PROPERTIES OF THERMOPLASTIC COMPOSITES

2021 ◽  
Author(s):  
RYO HIGUCHI ◽  
SOTA OSHIMA ◽  
SHU MINAKUCHI ◽  
TOMOHIRO YOKOZEKI ◽  
TAKAHIRA AOKI
Keyword(s):  
Mechanical Properties ◽  
Cooling Rate ◽  
Polyphenylene Sulfide ◽  
Constitutive Law ◽  
Thermoplastic Composites ◽  
Plastic Behavior ◽  
Thermoplastic Resin ◽  
Rate Dependent ◽  
Reinforced Thermoplastics ◽  
Fiber Reinforced Thermoplastics

This study investigates the effect of solidification conditions on the crystallization behaviors and mechanical properties of thermoplastic resin and carbon fiber reinforced thermoplastics (CFRTP). In particular, the crystallinity, elastic modulus, plastic behavior, strength, and fracture toughness were investigated in Polyphenylene Sulfide (PPS) and CF/PPS manufactured by different cooling rates. Based on experimental results, the cooling-rate-dependent elasto-plastic constitutive law of resin was developed empirically. Finally, the homogenized simulations of CF/PPS were conducted using the developed empirical model, and predicted results were compared with experiments.

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.

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