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Numerical and experimental evaluation of the mechanical behavior of Kevlar/glass fiber reinforced epoxy hybrid composites


Flexural, tensile, and impact strength of hybrid Kevlar/glass reinforced epoxy composite is studied. Six different types of hybrid composite material were manufactured by hand layup process using different compositions of Kevlar and glass fiber. Tensile, flexural and impact strengths of manufactured samples were investigated using standard tests and compared. It is observed that tensile strength is greater for combinations with higher percentage (%) of Kevlar fabric and decreases with an increase in the glass fabric %age. Flexural strength is higher for combinations with greater %age of glass fabric and decreases with an increase in the Kevlar fabric %age. From drop weight test, it is found from visual inspection that damaged area is increased with an increase in the glass fabric percentage. Numerical simulation model incorporated with elastoplastic material data successfully predicts tensile and flexural experimental results.

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This project was supported by the Deanship of Scientific Research at Prince Sattam bin Abdulaziz University, under the research project no. 2020/01/17063.

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Corresponding authors

Correspondence to Rizwan Ahmed Malik or Hussein Alrobei.

Additional information

Rizwan Ahmed Malik is currently working as an Assistant Professor in University of Engineering and Technology, Taxila, Pakistan. Previously, he worked as Research Professor at School of Advanced Materials Engineering, Changwon National University, Republic of Korea. He got his Ph.D. in Nano and Advanced Materials Engineering from Changwon National University, Republic of Korea and MS in Material Science and Engineering from University of Ulsan, Republic of Korea. His principal field of interest is processing, characterization, and applications of functional Materials for actuator, sensors and energy harvesting applications.

Hussein Alrobei received a M.S. degree in Mechanical Engineering in 2014 from University of South Florida, United State. He received Ph.D. degree in Mechanical Engineering at University of South Florida, United State during 2015–2018. Currently, he is working as an Assistant Professor in Mechanical Engineering Department, Prince Sattam Bin Abdulaziz University, Al-Kharj, Saudi Arabia. His research interests include composite materials, mechanical, physical and photoelectrochemical properties of molybdenum disulfide alpha-Hematite nanocomposite films.

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Nabeel, M., Nasir, M.A., Sattar, M. et al. Numerical and experimental evaluation of the mechanical behavior of Kevlar/glass fiber reinforced epoxy hybrid composites. J Mech Sci Technol 34, 4613–4619 (2020).

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  • Drop weight testing
  • Flexural test
  • Hybrid composite
  • Numerical simulation
  • Tensile test