Effect of cooling rate on mechanical properties of carbon fibre fabric and polypropylene composites

2017 ◽  
Vol 4 (9) ◽  
pp. 095304 ◽  
Author(s):  
Joon Seok Lee ◽  
Jong Won Kim
Keyword(s):  
Mechanical Properties ◽  
Carbon Fibre ◽  
Cooling Rate ◽  
Polypropylene Composites

Predicting the effect of cooling rate on the mechanical properties of glass fiber–polypropylene composites using artificial neural networks

2018 ◽  
Vol 32 (9) ◽  
pp. 1268-1281 ◽  
Author(s):  
Mohammed S Kabbani ◽  
Hany A El Kadi
Keyword(s):  
Mechanical Properties ◽  
Neural Networks ◽  
Artificial Neural Networks ◽  
Glass Fiber ◽  
Cooling Rate ◽  
Cooling Rates ◽  
Polypropylene Composites ◽  
Unidirectional Glass ◽  
Static Tensile ◽  
Artificial Neural

Properties of thermoplastic-based composites are affected by their processing conditions, and understanding their behavior under these different conditions is of most importance. The current study aims to predict the static tensile behavior of unidirectional glass fiber–polypropylene composite materials processed under different cooling rates using artificial neural networks (ANNs). Stress–strain relations for the material processed under various cooling rates were predicted using ANN. For all the cases investigated, the modulus of elasticity was predicted with a minimum accuracy of 97%, while the ultimate strain was predicted, in most cases, with a minimum accuracy of 90%. These predictions indicate that ANN can be successfully used to predict the mechanical properties of unidirectional composites manufactured under different cooling rates. This method allows users to predict the behavior of the material under cooling rate conditions for which no experimental data are available.

scholarly journals Extrusion Process of Polypropylene Composites Reinforced Milled Carbon Fibre for Conductive Polymer Composite Application

2018 ◽  
Vol 248 ◽  
pp. 01012 ◽  
Author(s):  
Nabilah Afiqah Mohd Radzuan ◽  
Abu Bakar Sulong ◽  
Mahendra Rao Somalu
Keyword(s):  
Mechanical Properties ◽  
Electrical Conductivity ◽  
Carbon Fibre ◽  
Extrusion Direction ◽  
Conductive Polymer ◽  
Extrusion Process ◽  
Polypropylene Composites ◽  
Conductive Polymer Composites ◽  
Parallel Direction ◽  
Low Shear

A polypropylene (PP) reinforced milled carbon fibre (MCF) was developed to produce high conductive polymer composites. Theoretically, by altering the filler orientation, the electrical conductivity and mechanical properties can be controlled. However, the orientation techniques which influence the MCF fibre are difficult to performed. Therefore, this study focused on controlling the filler orientation through the extrusion process. Hence, the extrusion temperature of 230°C and rotational speed of 50 rpm at 70 wt.% of MCF and 30 wt.% of PP were used. The electrical conductivity in perpendicular to the extrusion direction was higher at 2.0 S/cm as compared to 0.66 S/cm in the parallel direction. Besides, the extruded composite of rod and sheet were studied in which rod dies offers higher electrical conductivity of 3.0 S/cm and better mechanical properties of 1225 MPa than the sheet dies. Alteration in filler orientation aid in enhancing the electrical conductivity as minimum fillers breakage occurred due to the low shear rate of 2.2 s-1 which indirectly induces the filler to the desired orientation. Therefore, the extrusion process able to improve the electrical conductivity and mechanical properties of composite materials, as the filler oriented perpendicular to extrusion direction.

scholarly journals Comparison of Mechanical Properties of Carbon Fibre and Kaolin Reinforced Polypropylene Composites

2021 ◽  
Author(s):  
Duriyang Thongsoon ◽  
Chamil Abeykoon ◽  
Ivan J. Vera-Marun ◽  
Prasad Potluri ◽  
Wareerom Polrut ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Carbon Fibre ◽  
Polypropylene Composites

scholarly journals Influence of the cooling behaviour on mechanical properties of carbon fibre-reinforced thermoplastic/metal laminates

2018 ◽  
Vol 1 (2) ◽  
Author(s):  
Camilo Zopp ◽  
Daisy Nestler ◽  
Nadine Buschner ◽  
Carola Mende ◽  
Sven Mauersberger ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Carbon Fibre ◽  
Cooling Rate ◽  
Thermoplastic Polyurethane ◽  
Polyamide 6 ◽  
Shear Properties ◽  
Cooling Rates ◽  
Hybrid Laminates ◽  
Fast Cooling ◽  
Interlaminar Shear

For several years, thermoplastic hybrid laminates form a new class in the field of material compounds. These laminates consist of fibre-reinforced plastic prepregs and metal layers in alternating order. Compared to conventional thermosetting multilayer composites, these laminates are suitable for large-scale production and can be manufactured with significantly reduced cycle times in the thermoforming process.  In the framework of this contribution, the influence of the cooling rate of carbon fibre-reinforced thermoplastic composites and hybrid laminates was investigated with regard to crystallinity and the resulting mechanical properties. Polyamide 6 and thermoplastic polyurethane as matrix systems were examined, in particular.Additionally, the differential scanning calorimetry was used in order to investigate the influence of the cooling rate on the crystallisation behaviour. It could be determined that the cooling rate has a limited influence on the crystallisation of polyamide 6 and this influences the mechanical properties. Furthermore, a reliance of process parameters on the characteristics profile of composite materials and material compounds with thermoplastic polyurethane could be identified. Depending on process conditions, tensile, bending, and interlaminar shear properties fluctuate up to 20 % in fibre-reinforced laminates and up to 32 % in hybrid laminates. Moderate to fast cooling rates result in optimum mechanical characteristics of tensile properties in fibre-plastic-compounds. Fast to very fast cooling rates are advisable for bending and interlaminar shear properties. Highest tensile and bending characteristics are achieved in hybrid laminates by using fast to very fast cooling rates, while interlaminar shear properties tend to be highest in slow to moderate cooling rates.

Effects of cooling rate on the mechanical properties of dual phase treated vanadium steels

1983 ◽  
Vol 41 ◽  
pp. 220-221
Author(s):  
L.J. Chen ◽  
H.C. Cheng ◽  
J.R. Gong ◽  
J.G. Yang
Keyword(s):  
Mechanical Properties ◽  
Cooling Rate ◽  
Automobile Industry ◽  
High Strength ◽  
Weight Percent ◽  
Low Alloy Steels ◽  
Dual Phase ◽  
Resource Requirement ◽  
Alloy Steels ◽  
Potential Weight

For fuel savings as well as energy and resource requirement, high strength low alloy steels (HSLA) are of particular interest to automobile industry because of the potential weight reduction which can be achieved by using thinner section of these steels to carry the same load and thus to improve the fuel mileage. Dual phase treatment has been utilized to obtain superior strength and ductility combinations compared to the HSLA of identical composition. Recently, cooling rate following heat treatment was found to be important to the tensile properties of the dual phase steels. In this paper, we report the results of the investigation of cooling rate on the microstructures and mechanical properties of several vanadium HSLA steels.The steels with composition (in weight percent) listed below were supplied by China Steel Corporation: 1. low V steel (0.11C, 0.65Si, 1.63Mn, 0.015P, 0.008S, 0.084Aℓ, 0.004V), 2. 0.059V steel (0.13C, 0.62S1, 1.59Mn, 0.012P, 0.008S, 0.065Aℓ, 0.059V), 3. 0.10V steel (0.11C, 0.58Si, 1.58Mn, 0.017P, 0.008S, 0.068Aℓ, 0.10V).

Influence of surface treatments and coupling agents on the thermal and thermo‐mechanical properties of yerba mate/post‐consumer polypropylene composites

2021 ◽  
Author(s):  
Betina Hansen ◽  
Cleide Borsoi ◽  
Ruan Ezequiel Gemmer ◽  
Marcos Aurélio Dahlem Júnior ◽  
Ademir José Zattera ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Surface Treatments ◽  
Coupling Agents ◽  
Yerba Mate ◽  
Polypropylene Composites
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