Impact Strength of Glass/Kevlar Fiber Hybrid Composites with Various Stacking Sequences and Impact Energies 
Norazean Shaari1, Dinesh Nadarajah2, Nor Shamimi Shaari3, Aidah Jumahat4
1Norazean Shaari*, Department of Engineering, Faculty of Engineering and Life Sciences, Universiti Selangor, 45600 Bestari Jaya, Selangor, Malaysia.
2Dinesh Nadarajah, Department of Engineering, Faculty of Engineering and Life Sciences, Universiti Selangor, 45600 Bestari Jaya, Selangor, Malaysia.
3Nor Shamimi Shaari, Faculty of Mechanical Engineering, Universiti Teknologi MARA, Cawangan Pulau Pinang, 13500 Permatang Pauh, Malaysia.
4Aidah Jumahat, Faculty of Mechanical Engineering, Universiti Teknologi MARA, 40450 Shah Alam, Selangor, Malaysia.
Manuscript received on July 30, 2019. | Revised Manuscript received on August 20, 2019. | Manuscript published on August 30, 2019. | PP: 4286-4293 | Volume-8 Issue-6, August 2019. | Retrieval Number: F9211088619/2019©BEIESP | DOI: 10.35940/ijeat.F9211.088619
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© The Authors. Blue Eyes Intelligence Engineering and Sciences Publication (BEIESP). This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/)
Abstract: Hybrid composites have been considered as modern materials for many engineering applications, yet there is still a major concern on the influence of stacking sequence configuration in hybrid composite laminates especially under impact loading. Therefore, the focus of this paper is to determine the optimized stacking sequence of glass/Kevlar fiber hybrid composite laminates under impact loading. Hybrid composite laminates were fabricated using vacuum bagging method with four different stacking sequences known as H1, H2, H3 and H4. Low velocity drop weight impact test (ASTM D7136) was conducted using a hemispherical nose impactor diameter of 12 mm with a mass of 6 kg at impact energy levels of 10 J, 20 J, 30 J, and 40 J. From the results obtained, H3 specimen which has a stacking sequence of glass fiber in the exterior part with Kevlar fiber in the interior part was concluded as the optimized stacking sequence with better impact resistance properties. H3 specimen recorded a higher value in peak load, maximum initiation energy, high impact strength, high strength to weight ratio and high total energy absorbed to weight ratio. In addition, it was observed that H3 specimen has less damaged area compared to H1, H2, and H4 specimens. This study contributes knowledge on the impact resistance properties of hybrid composite laminates which will be much useful for material selection and product development.
Keywords: Glass fiber, Hybrid composites, Impact, Kevlar fiber, Stacking sequence