Document Type : Research Paper

Authors

1 Assistant Professor, Technical and Vocational UniversityTehran, Iran

2 Student wood industries department, Faculty of civil Engineering, Shahid Rajaee Teacher Training University, Tehran, Iran

Abstract

The increasing demand for durable and lightweight raw materials in home and office furniture makes it necessary to investigate and optimize their properties. In this study, the effect of the sheet type, layout, and thickness were investigated on the mechanical properties of lightweight sandwich panels. Two types of sheets were used for making sandwich panels; medium density fiberboards and particle boards with a thickness of 8 mm and cores made of tube (bobbins) cardboard with heights of 30 and 50 mm, in three types of layouts. Urea formaldehyde glue was selected. The bending stiffness and modulus of elasticity were evaluated according to ASTM C 393 and impact strength according to DIN 5218 1992. The results showed that the thickness of the core had a significant effect on the mechanical properties, so that with increasing the thickness of the core, bending stiffness and modulus of elasticity decrease, but impact strength increases. The best results came from specimens made with a 30mm thick, medium density fiberboard core and a Type A layout.

Keywords

-Barboutis, I. and Vassiliou, V., 2004. Strength Properties Of Lightweight Paper Honeycomb Panels For The Furniture, Aristotle University of Thessaloniki, Faculty of Forestry and Natural Environment and Department of Harvesting and Forest Products Technology,6 p.
-Cai, Z. and Ross, R.G., 2010. Mechanical properties of wood based composites materials, In: Wood Handbook, Wood as
      an Engineering Material, U.S. Department of Agriculture, Forest Service, Forest Products Laboratory, General Technical Report FPL-GTR-190. Madison, 12-1-12-12.
-Chen, Z., Yan, N., Deng, J. and Smith, G., 2011. Flexural creep behavior of sandwich panels containing Kraft paper honeycomb core and wood composite skins. Materials Science and Engineering, 528(16): 5621–5626.
-Ebrahimi, G., 2013. Mechanical Wood Composite Products. Tehran Univ. Press, 680p.
-Erickson, M.D., Kallmeyer, A.R. and Kellogg, K.G., 2005. Effect of temperature on the low-velocity impact
      behavior of composite sandwich panels. Journal of Sandwich Structures and Materials. vol. 7, pp: 245-264.
-Ghofrani, M., Pishan, S. and Talaei, A., 2014. The effect of core type and skin on the mechanical properties of lightweight sandwich Panels. Iranian Journal of Wood and Paper Science Research, 28(4): 720-731.
-Mazinani M., Rezaei, H. and Nikfarjam, M., 2007. Comparison between theory and experiment and balsa sheet honeycomb sandwich construction with cerebral vessels extremist, 9th Conference on Maritime, Noor- Mazandaran Province, p13.
-Paulius, G., Daiva, Z., Vitalis, L. and Marian, O., 2010. Experimental and numerical study of impact energy absorption of safety important honeycomb core sandwich, structures. Mater Sci, 16(2): 119–23.
-Saffari, M., Jabbari, M., Najafi, A., Tatari, A. and Ghaffari, M., 2013. The effect of face and adhesive types on mechanical properties of sandwich panels made from honeycomb paper. Iranian Journal of Wood and Paper Industries, 4(2): 157-169.
-Salemi, M. and Shishehsaz, M., 2013. Investigating the impact of geometrical parameters on stress in honeycomb structures. Second National Conference on Mechanical Systems and Industrial Innovation. Islamic Azad University of Ahvaz, 17-18  December
-Smardzewski, J., GajÄ™cki, A, and Wojnowska, M., 2019. Investigation of Elastic Properties of Paper Honycomb Panels With Rectangular Cells. BioResources, 14(1): 1435–1451.
-Tan, C.Y. and Hazizan Md.A., 2011. Impact response of fiber metal laminate sandwich composite structure with polypropylene honeycomb core. Composites: Part B, vol. 43, pp: 1433-1438.
-Wang, D., 2006. Compression breakage properties research on the honeycomb, paperboard Packaging Engineering, 27: 37–39.
-Wang, D., 2008. Impact behavior and energy absorption of paper honeycomb sandwich panels, International Journal of Impact Engineering, International Journal of Impact Engineering, 36(1): 110–114.