INFLUENCE OF BIODIESEL AND BLENDED FUELS ON THE TENSILE AND COMPRESSIVE PROPERTIES OF GLASS FIBRE REINFORCED EPOXY COMPOSITES

With the recent usage increase of biodiesel as an alternative fuel source as well as the increase in the utilisation of glass fibre reinforced polymer (GFRP) as structure such as tanks have considerably affected the necessity to study the influence of fuel absorption on the mechanical properties of GFRP composites. Biodiesel is a renewable, efficient and environmentally friendly but possess a high viscosity property. Three main fuel types which consist of aviation fuel, biodiesel and a blend between aviation and biodiesel fuel are used to perform complete immersion of the GFRP specimens. An experimental method is used to investigate the mechanical degradation in term of tension and compression properties of the GFRP composites. The GFRP specimens are aged using immersion bath technique. Vacuum assisted resin transfer moulding (VARTM) is used to manufacture the GFRP specimens with a volume fraction of 0.50 with a void content below 3%. The GFRP specimens were immersed in the fuels until it reaches an equilibrium state before the tensile and compression test was carried out to study the mechanical properties of the immersed specimens. Based on the result obtained, the GFRP specimens that were immersed in all three fuel solution display a slight degradation in term of tensile and compressive strength as well as their Young’s modulus when compared to an as-received (standard) specimen. It is concluded, that the GFRP composite was able to resist the fuels corrosive nature as they can retain most of their mechanical strength and the decrement is not significant.

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Mechanical, degradation and cytocompatibility properties of magnesium coated phosphate glass fibre reinforced polycaprolactone composites

Journal of Biomaterials Applications ◽

10.1177/0885328214541302 ◽

2014 ◽

Vol 29 (5) ◽

pp. 675-687 ◽

Cited By ~ 6

Author(s):

Xiaoling Liu ◽

Muhammad S Hasan ◽

David M Grant ◽

Lee T Harper ◽

Andrew J Parsons ◽

...

Keyword(s):

Mechanical Properties ◽

Mass Loss ◽

Water Uptake ◽

Phosphate Glass ◽

Glass Fibre ◽

Mechanical Degradation ◽

Osteosarcoma Cell ◽

Ph Change ◽

Glass Fibre Reinforced ◽

Composite Samples

Retention of mechanical properties of phosphate glass fibre reinforced degradable polyesters such as polycaprolactone and polylactic acid in aqueous media has been shown to be strongly influenced by the integrity of the fibre/polymer interface. A previous study utilising ‘single fibre’ fragmentation tests found that coating with magnesium improved the fibre and matrix interfacial shear strength. Therefore, the aim of this study was to investigate the effects of a magnesium coating on the manufacture and characterisation of a random chopped fibre reinforced polycaprolactone composite. Short chopped strand non-woven phosphate glass fibre mats were sputter coated with degradable magnesium to manufacture phosphate glass fibre/polycaprolactone composites. The degradation behaviour (water uptake, mass loss and pH change of the media) of these polycaprolactone composites as well as of pure polycaprolactone was investigated in phosphate buffered saline. The Mg coated fibre reinforced composites revealed less water uptake and mass loss during degradation compared to the non-coated composites. The cations released were also explored and a lower ion release profile for all three cations investigated (namely Na+, Mg2+ and Ca2+) was seen for the Mg coated composite samples. An increase of 17% in tensile strength and 47% in tensile modulus was obtained for the Mg coated composite samples. Both flexural and tensile properties were investigated and a higher retention of mechanical properties was obtained for the Mg coated fibre reinforced composite samples up to 10 days immersion in PBS. Cytocompatibility study showed both composite samples (coated and non-coated) had good cytocompatibility with human osteosarcoma cell line.

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Exploration of Nano Fillers (Multi Walled Carbon Nano Tubes and Graphene Powders) in the Reinforcement of Epoxy/Glass Fibre Polymers (GFRP)

International Journal of Innovative Technology and Exploring Engineering - Special Issue ◽

10.35940/ijitee.l2546.1081219 ◽

2019 ◽

Vol 8 (12) ◽

pp. 2718-2722

Keyword(s):

Mechanical Properties ◽

Glass Fibre ◽

Experimental Investigations ◽

Matrix Interface ◽

Gfrp Composites ◽

Reinforced Polymers ◽

The Matrix ◽

Glass Fibre Reinforced ◽

Carbon Nano Tubes ◽

Fibre Matrix

Variations in the mechanical properties of the glass fibre reinforced polymers were seen when exploring nano fillers such as Multi Walled Carbon Nano Tubes (MWCNTs) and graphene powders for reinforcement. GFRP composites when fabricated with increase in percentage weights of MWCNTs and graphene get better interfacial bonding with the matrix. Nano fillers improve the performance of the composites. This paper deals with the examination and experimental investigations carried out for the prediction of the enhancement of mechanical properties on GFRP reinforced with MWCNTs and graphene powders. GFRP composites were fabricated with variations in the amount of nano fillers in percentage weights of 2%, 4%, 6%, 8% and 10% wt. MWCNTs and graphene powders. The method used for reinforcement of resin with nano fillers was ultrasonication method meant for avoiding voids. A tendency for the mechanical properties to deteriorate was observed when nano fillers added were beyond certain weights of MWCNTs and graphene powders. This could be due to the agglomeration of nano fillers that change the fibre/matrix interface. Graphene nano fillers opts to be better compared to MWCNTs since the fabricated graphene reinforced glass fibre specimens have a better performance than GFRP specimens reinforced with MWCNTs.

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Analysis of the Effects of Raster Orientation in Components Consisting of Short Glass Fibre Reinforced ABS of Different Fibre Volume Fraction Produced by Additive Manufacturing

Key Engineering Materials ◽

10.4028/www.scientific.net/kem.742.482 ◽

2017 ◽

Vol 742 ◽

pp. 482-489 ◽

Cited By ~ 1

Author(s):

Anselm Heuer ◽

Pascal Pinter ◽

Kay André Weidenmann

Keyword(s):

Mechanical Properties ◽

Additive Manufacturing ◽

Glass Fibre ◽

Volume Fraction ◽

Fibre Orientation ◽

Direct Production ◽

Short Glass Fibre ◽

Glass Fibre Reinforced ◽

Printing Direction ◽

Short Glass

Additive manufacturing provides the ability to produce structural components featuring complex shapes in one step, compared to traditional methods of production. Therefore, additive manufacturing has recently gained attention for the direct production of parts. Using fibre reinforced filaments offers the opportunity to improve the mechanical properties of FFF printed components. In order to dimension them correctly, the mechanical properties of additive manufactured samples based on glass fibre reinforced filaments were determined. Additionally, the influence of extrusion paths resulting in a distinct fibre orientation were taken into account. Samples were produces by FFF-method (Fused Filament Fabrication) from three materials: Bulk ABS and short glass fibre reinforced ABS featuring 5 wt% and 10 wt% fibre content. Additionally, samples were printed in two different raster orientations of 0° and 90°. Three different sample types were manufactured in order to perform tension, flexural and impact tests. Prior to printing the samples, the slicer parameters were optimized for usage with the fibre reinforced filament. To determine the FOD (Fibre Orientation Distribution) and FLD (Fibre Length Distribution), the samples were scanned using a CT. Results show that fibre reinforced filaments used in this contribution can increase stiffness to 150 % of the bulk material in printing direction with a fibre weight content of 10 %. CT investigations have shown that the orientation of fibres is primary aligned to the printing path.

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