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    Effect of reinforcing materials on mechanical properties of composite material using Taguchi method
    (Journal of Physics: Conference Series, 2021) Owaid, Anmar Abdulazeez; Kaygusuz, Hakan; Mohammed, Farag Mahel
    The mechanical properties play an important role in the selection of suitable material in the manufacturing of boats. In this paper, the effect of glass fiber orientations and the fillers weight fraction on the mechanical properties of un saturated polyester composite material were studied. The glass fibers were used with (0/0, 0/90, 45/45) angles. The carbon filler used with (2.5%, 5%, 7.5%), while the aluminium oxide nano be used with (0%, 1%, 3%) weight fraction respectively. The standard Taguchi’s array L9 (33 ) was used. The signal to noise ratio and analysis of variance were introduced to analyze and estimate the optimal combination parameters. The results show that the mechanical properties improved with using the reinforcements. The glass fibers orientations angle presents the most parameter effect than the other parameters on the modulus of elasticity, tensile strength and impact strength with a contribution of 81.8%, 83.39% and 96.75% respectively. Followed by carbon and aluminium oxide nano. The optimum parameter with their levels for the highest modulus of elasticity was obtained at (0/90 fiber orientation, 5% carbon and 0% nano aluminium oxide). While the highest tensile strength and impact strength present with using (0/0 fiber orientation and 5% carbon). The experimental and expected results are very close, with an error ratio not exceeding 5%.
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    Öğe
    Investigation of mechanical properties of unsaturated polyester – glass fiber composites used for boat structure
    (Altınbaş Üniversitesi / Lisansüstü Eğitim Enstitüsü, 2021) Owaid, Anmar Abdulazeez; Kaygusuz, Hakan
    Mechanical properties are important to choose the suitable material in the manufacturing of boats. In this research, the effect of glass fiber orientations and the fillers weight fraction on the Mechanical properties of composite materials that contain unsaturated polyester as a base material were studied in two cases, the first case is test the samples at room temperature, while in the second case the samples are tested after immersed it in sea water for 14 days. Tensile strength, impact resistance and water absorption tests were performed. The glass fibers were used at (0/0, 0/90, 45/45) angles with 30% wt. The carbon and the aluminum oxide Nano be used as fillers with (2.5%, 5%, 7.5%) and (0%, 1%, 3%) weight fraction respectively. The standard Taguchi’s array L9 (33 ) was used. The analysis of mean, the signal to noise ratio and analysis of variance were introduced to analyze and estimate the optimal combination parameters. The results show that the mechanical properties improved by rather than that of pure unsaturated polyester. The glass fibers orientations angle presents the most parameter effect than the other parameters on the elasticity modulus, tensile resistance and impact resistance with a contribution of 81.8%, 83.39% and 96.75% respectively. Followed by carbon and aluminum oxide Nano filler. Carbon filler is the most parameter effect in the water absorption test than the other parameters with a contribution of 44.31%, followed by fiber orientation angle and aluminum oxide Nano filler. The optimum parameter with their levels for the highest elastic modulus was obtained at (0/90 fiber orientation, 2.5% carbon and 1% Nano aluminum oxide filler). While the highest tensile resistance and impact resistance present with using (0/0 fiber orientation, 5% carbon filler and 1 aluminum oxide nanofiller). It was found that the lowest value of water absorption was at (0/0 fiber orientation, 2.5% carbon filler and 0% aluminum oxide Nano filler). In the case of samples that were immersed in sea water for 14 days, it was found that the most parameter effect than the other parameters on the modulus of elasticity and water absorption was the aluminum oxide Nano filler with a contribution of 36.53% and 40.58% respectively, followed by the carbon filler and finally the direction of the fiber. And it was found that the parameter most influence on tensile resistance and impact resistance is the direction angle of the fiber, where its contribution was 78.6% and 91.42% respectively, followed by alumina oxide Nano filler and finally carbon filler. It can be noticed that the sea water will influenced the parameters and their level effects on the composite properties.