Erosion Wear and Hardness of Glass Fiber/Epoxy with Nano and Micro TiO2Hybride Composites

2018 ◽  
Vol 1 (I) ◽  
pp. 43-51
Author(s):  
Aseel Basim Al-Zubaidi ◽  
◽  
Ahmed A. Al-Tabbakh ◽  
Shatha Riyad Ahmed ◽  
Amine Achour ◽  
...  
Keyword(s):  
2020 ◽  
Vol 20 ◽  
pp. 420-427 ◽  
Author(s):  
Shatha Riyad Ahmedizat ◽  
Aseel Basim Al-Zubaidi ◽  
Ahmed A. Al-Tabbakh ◽  
Amine Achour ◽  
Alaa Abdul Hamead

Author(s):  
Ganesh Kalagi ◽  
Abdulrajak Buradi ◽  
Abdul Razak Kaladgi ◽  
H.K. Madhusudhana ◽  
H. Udaya Prasanna ◽  
...  

2018 ◽  
Vol 00 (1) ◽  
pp. 43-51
Author(s):  
Aseel Basim Al-Zubaidi ◽  
◽  
Ahmed A. Al-Tabbakh ◽  
Shatha Riyad Ahmed ◽  
Amine Achour ◽  
...  
Keyword(s):  

In this research work the mechanical and erosion wear behavior of E-Glass fiber reinforced epoxy based hybrid composites were determined. Fillers like coal fly ash (CFA), Coal powder (CP) and mixture of coal fly ash and coal powder (CFA-CP) at different weight proportions of 0wt%, 5wt% and 10wt% were mixed with Epoxy Resin and composites were fabricated by manual hand lay-up technique with 50wt% of Glass Fiber as reinforcement and the prepared composites were cut in to specimens as per ASTM standards for mechanical characterizations like tensile, flexural, ILSS, Impact and Hardness properties and erosion wear behavior. Experimental analysis shows that the tensile strength of unfilled Epoxy-Glass composites is maximum (252.189MPa) where as for 10wt% coal fly ash filled epoxy-glass composites tensile modulus is maximum (7.823 GPA). The flexural strength and ILSS are 750.54 MPa and 25.188 MPa respectively for 10 wt% CP filled hybrid composites. The impact strength and hardness are 2100 J/m and 62Hv for 10wt% CFA-CP filled epoxy composites. Coming to erosion wear behavior of composites filled with CFA-CP have exhibited maximum erosion wear resistance when compared with CFA filled epoxy composites. It is observed that with the increase in weight percentages of the filler material. The mechanical properties and erosion wear resistance of the composites were enhanced. Hence, for structural applications filler materials mixed Glass- Epoxy hybrid composites can be used in place of plain glass fiber reinforced epoxy composites due to the enhanced properties of composites.


The present study aims to investigate slurry pot erosion wear behavior of nanoclay-modified short fiber reinforced polymer (SFRP) composites. Epoxy matrix modified with 5wt% nanoclay was prepared using high shear three roll milling mixing system at 60°C and 12.7 m/s speed. Two short synthetic fibers and two short natural fibers were used as reinforcements, i.e. carbon, glass, basalt, and kenaf. Slurry pot erosion wear tests were conducted using a mixture of sand and water as erosive materials and at a running speed of 300rpm for 10km sliding distance. The results showed that the inclusion of short fibres improved the erosion wear behavior of epoxy polymer, in which basalt reinforced polymer composite showing the best performance when compared to the other types of SFRP composites. The addition of 5.0wt% nanoclay filler also reduced the specific erosion wear rate of the SFRP composites. Nanoclay had significantly improved wear rate of glass fiber reinforced polymer composites of up to 53% compared to its pure state. Basalt fiber was also found to be a potential alternative to synthetic fiber; i.e carbon and glass fiber, based on its lowest wear rate among all the SFRP composites.


2021 ◽  
Author(s):  
Ali Ünüvar ◽  
Murat Koyunbakan ◽  
Mehmet Bağcı

Abstract The present study concentrates on optimization and the effect of machining parameters on delamination that occurs during drilling operation of pure glass fiber reinforced polymer (GFRP) composites and added GFRP composites which were developed for resistance to erosion wear. Contribution of drilling parameters to delamination was investigated by using Taguchi method and Analysis of Variance (ANOVA). Relationship between machining parameters and delamination was modelled by using response surface methodology. Correlations were established between the machining parameters by quadratic regression using response surface methodology (RSM). Delamination factors in the hole entrance and exit were obtained in drilling of pure glass-fiber epoxy, SiO2 and Al2O3 added GFRP materials using the experimental plan. Delamination factors at the hole exits were found bigger than delamination factors at the hole entrances. The smallest delamination values were obtained in GFRP/Epoxy composite compared to Al2O3 / SiO2 added GFRP composites at the hole exit. In the investigation of machinability of composites, considering the material as a variable, it has been determined that the material has a greater effect on delamination than the cutting parameters. A new machinability index defined and the material having the best machinability of the three materials was Al2O3 added GFRP composite at the entrance. Good machinability was obtained in drilling of pure GFRP/epoxy composite at the hole exit. It has been found that the effect of feed rate on delamination is greater than the cutting speed and the cutting speed has a low effect. Optimization of the multi-objective function created for maximizing the material removal rate, minimizing the delamination was performed, and the optimum drilling parameters were obtained. As a result of the experimental study, it was found that the amount of delamination increased although the low mechanical properties added GFRP composites with the high resistance to erosion wear in accordance with pure epoxy GFRP composites due to the lack of a strong bond between the epoxy and the fibers in AL2O3 and SiO2. It was observed that the delamination amounts of pure epoxy GFRP, Al2O3 added GFRP, and SiO2 added GFRP composites increased respectively, while the compressive and tensile strengths of these three materials decreased.


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