Experimental Study on The Effect of Aspect Ratio on Flexural Behavior of Aluminum Sandwich Composite

Radhakrishnan, Ganesh; Al Hattali, Al Haitham; Al Yahyai, Al Muntasser; Al Riyami, Al Muntasser; Al Hadhrami, Al Muatasim

doi:10.30684/etj.2022.134317.1234

	Experimental Study on The Effect of Aspect Ratio on Flexural Behavior of Aluminum Sandwich Composite
Engineering and Technology Journal
Article 7, Volume 40, Issue 7, 2022, Pages 990-995 PDF (398.45 K)
Document Type: Research Paper
DOI: 10.30684/etj.2022.134317.1234
Authors
Ganesh Radhakrishnan^* ¹; Al Haitham Al Hattali²; Al Muntasser Al Yahyai²; Al Muntasser Al Riyami²; Al Muatasim Al Hadhrami²
¹NIZWA COLLEGE OF TECHNOLOGY
²UTAS, Nizwa
Abstract
Sandwich composites are one such kind of light-weight composites developed for structural and vehicle body buildings etc. Due to their remarkable features such as high specific strength, high toughness and resistance to inter laminar shear strength. In this study, commercially available aluminium sandwich composite (ASC) laminate was considered for investigating its flexural behavior and buckling behavior as it was mostly used for various structural applications. Flexural analysis was done for different aspect ratios in order to analyze the influence of cross section of the specimen and support span on the flexural capability of the sandwich beam. The composite specimens prepared for flexural test consist of length 150 mm and widths 15, 12 and 10 mm. The flexural test was done for support span of 90, 110 and 130 mm respectively. The performance measures of flexural test are maximum bending load, deflection, flexural stiffness and inter-laminar shear stress. The flexural analysis revealed the fact that the aspect ratio appreciably affected the flexural capacity of the sandwich composite laminates. Maximum flexural capacity with bending load around 3.5 to 4 kN and flexural stiffness around 2.5 to 4.7 kN/mm respectively was observed for the sandwich specuimen for the aspect ratios L/t = 30 and b/t = 5. Being a anisotropic structure, the flexural behavior of this sandwich composite exposed as a combination of bending and shear failure. The soft core material and ductile skin face sheets resulted in a combined failure against flexural load in static condition.
Highlights
Aluminium sandwich composite panel is one of the popular materials in structural applications particularly targeting for aesthetic appearance. Flexural behavior of these structural importance composite panel will have a research outcome for the benefit of material research industries. Investigation on the effect of aspect ratio on the flexural behavior of this sandwich composite will be a new attempt in this kind.
Keywords
Sandwich composite; flexural strength; aspect ratio; Inter-laminar shear

References
[1] D. Cao, The effect of resin uptake on the flexural properties of compression molded sandwich composites. Wind energy., 25 (2022) 71-93. http://dx.doi.org/10.1002/we.2661 [2] C- W .Kong,. Experimental strength of composite sandwich panels with cores made of aluminum honeycomb and foam. Advanced composite materials., 23 (2014) 43-52. http://dx.doi.org/10.1080/09243046.2013.862386 [3] M. Amin, Tensile Strength and Bonding in Compacts: A Comparison of Diametral Compression and Three- Point Bending for Plastically Deforming Materials. Drug development and industrial pharmacy., 28 (2002) 809-813. https://doi.org/10.1081/DDC-120005626 [4] S. Venkatesana, M. Anthony Xavior. Characterization on Aluminum Alloy 7050 Metal Matrix Composite Reinforced with Graphene Nanoparticles, Global Congress on Manufacturing and Management., 30 (2019) 120-127. https://doi.org/10.1016/j.promfg.2019.02.018 [5] K. K. Joshua, M. O. Alaneme, Bodunrin, J.A Omotoyinbo. On the microstructure, mechanical behaviour and damping characteristics of Al-Zn based composites reinforced with martensitic stainless steel (410L) and silicon carbide particulates, (Pre-proof), Int. J. Lightweight Mater. Manuf., (2022). [6] A. Isiktas, Springback behavior of fiber metal laminates with carbon fiber-reinforced core in V-bending process, Arabian journal for science and engineering., 45 (2020) 9357- 9366. http://dx.doi.org/10.1007/s13369-020-04796-w [7] E. Sherkatghanad, Innovative approach to mass production of fiber metal laminate sheets, Materials and manufacturing processes., 33 (2017) 552-563. https://doi.org/10.1080/10426914.2017.1364864 [8] J.WO. Park, Experiment and analysis of unidirectional CFRP with a hole and crank as sandwich-form inhomogeneous composite, Advanced composite materials., 28 (2018) 103-114. https://doi.org/10.1080/09243046.2018.1458513 [9] H. Zniker. Energy absorption and damage characterization of GFRP laminated and PVC-foam sandwich composites under repeated impacts with reduced energies and quasi-static indentation, Case studies in construction materials., 16 (2020) 00844. [10] E. Tang, Xiaoqi Zhang, Yafei Han, 2019, Experimental research on damage characteristics of CFRP/aluminum foam sandwich structure subjected to high velocity impact, J. Mater. Res. Technol., 8 (2019) 4620-4630. https://doi.org/10.1016/j.jmrt.2019.08.006 [11] K. Cheol-Won. Experimental strength of the composites sandwich panels with cores made of aluminum honeycomb and foam, Advanced composite materials., 23 (2013) 43-52. https://doi.org/10.1080/09243046.2013.862386 [12] M. A. Khan , Experimental and numerical analysis of flexural and impact behavior off glass sandwich panel for automotive structural application, Advanced composite materials., 27 (2018) 367-386. https://doi.org/10.1080/09243046.2017.1396199 [13] A. R. Sivaram , N. Manikandan, S.K. Krishnakumar, R. Rajavel, S. Krishnamohan & G. Vijayaganth. Experimental study on aluminium based sandwich composite with polypropylene foam sheet, Materials today: Proceedings., 24 (2020) 746-753. https://doi.org/10.1016/j.matpr.2020.04.331
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