Experimental Investigation of the Mechanical Properties of Sewing Cores in Composite Sandwich Panels

Wisam Azeez Shkhair  Aldresat; Ahmad Akbari

doi:10.51173/jt.v7i2.2604

Authors

Wisam Azeez Shkhair Aldresat Department of Mechanical Engineering, Ker.C. Islamic Azad University, Kermanshah, Islamic Republic of Iran
Ahmad Akbari Department of Mechanical Engineering, Ker.C. Islamic Azad University, Kermanshah, Islamic Republic of Iran

DOI:

https://doi.org/10.51173/jt.v7i2.2604

Keywords:

Sandwich Panel, Composite, Core Sewing, Foam, Stiffness

Abstract

In this paper, the effect of stitching the core to the skins of composite sandwich panels made of a foam core covered by two composite skins is studied. The main aim of the research is to investigate the effect of sewing the core of the sandwich panel using polyester yarn on the mechanical properties of the sandwich panel. Therefore, by connecting two layers of 5 mm polystyrene foam, a core with a thickness of 10 mm is constructed, and fiberglass fabric is used for the manufacturing of the skins. Four 150^mm×32^mm×12^mm samples of sandwich panels with different dimensions are sewn and tested under the three-point bending test. The arrangements of the sewing are named N, M, W, and V according to the form of binding. Based on the results, sewing of the core increases the shear stiffness of the core, but it can cause damage to the core and reduce the strength of the sandwich panel. Among different sewing arrangements, N sewing showed the highest strength and maximum core stiffness.

Downloads

Download data is not yet available.

Author Biographies

Wisam Azeez Shkhair Aldresat , Department of Mechanical Engineering, Ker.C. Islamic Azad University, Kermanshah, Islamic Republic of Iran

Ahmad Akbari, Department of Mechanical Engineering, Ker.C. Islamic Azad University, Kermanshah, Islamic Republic of Iran

References

Society of Automotive Engineers, National Institute for Aviation Research (U.S.). Composite Materials Handbook. Volume 6, Structural Sandwich Composites. SAE International on behalf of CMH-17, a division of Wichita State University; 2013.

H. G. Allen, Analysis and design of structural sandwich panels, One. Oxford, UK: PERGAMON PRESS, 1969.

D. Zenkert, An Introduction to Sandwich Construction. DTU Mechanical Engineering, 1997.

A. B. Pereira and F. A. O. Fernandes, “Sandwich panels bond with advanced adhesive films,” J. Compos. Sci., vol. 3, no. 3, 2019, https://doi.org/10.3390/jcs3030079.

M. F. Funari, F. Greco, and P. Lonetti, “Sandwich panels under interfacial debonding mechanisms,” Compos. Struct., vol. 203, no. June, pp. 310–320, 2018, https://doi.org/10.1016/j.compstruct.2018.06.113.

S.A. Rodrigues, J.L. Ferracane, A. Della Bona, “Influence of surface treatments on the bond strength of repaired resin composite restorative materials”,Dent Mater, vol. 25, issue 4, pp.442-51, Apr 2009, https://doi.org/10.1016/j.dental.2008.09.009.

S. S. Babu, M. A. Andreescu, T. J. Linehan, and C. R. S. Meland, “Nanomaterials in adhesives for improving bond strength of composite sandwich panels,” J. Compos. Mater., vol. 53, no. 10, pp. 1362-1375, Oct. 2019, doi: 10.1177/0021998318771345.

L. Zhang, R. Y. Wang, and E. L. Qiu, “Effects of surface roughness on bonding performance of composite sandwich panels,” Compos. Part B Eng., vol. 196, pp. 108189, Jan. 2020, doi: 10.1016/j.compositesb.2020.108189, https://doi.org/10.1016/j.compositesb.2020.108189.

J. Li, A. M. Lawrence, and B. Z. Pei, “Influence of environmental factors on bonding behavior of composite sandwich panels,” Mater. Des., vol. 143, pp. 358-368, Jun. 2018, https://doi.org/10.1016/j.matdes.2018.01.035.

Y. Wang, H. Liu, and X. Y. Zhang, “Novel surface treatments for enhancing adhesion in composite sandwich panels,” Int. J. Adhes. Adhes., vol. 74, pp. 96-105, Jun. 2017, https://doi.org/10.1016/j.ijadhadh.2016.10.013.

H. Kim, S. J. Anderson, and D. P. McKeown, “Mechanical properties and failure mechanisms of bonded core-skin interfaces in composite sandwich panels,” Composite Struct., vol. 221, pp. 110914, Aug. 2019, https://doi.org/10.1016/j.compstruct.2019.110914.

T. Wu, K. H. Choi, and V. K. J. Gariépy, “Deformation behavior and failure mechanisms of bonded joints in composite sandwich panels under different loading conditions,” Composite Interfaces, vol. 28, no. 1, pp. 51-68, Jan. 2021, doi: 10.1080/09276440.2020.1791254.

Murmu, Peter P., John Kennedy, Sidharth Suman, Shen V. Chong, Jérôme Leveneur, James Storey, Sergey Rubanov, and Ganpati Ramanath. "Multifold improvement of thermoelectric power factor by tuning bismuth and antimony in nanostructured n-type bismuth antimony telluride thin films." Materials & Design, 163, 107549, Jan. 2019, https://doi.org/10.1016/j.matdes.2018.107549.

Qin, Fuyong, Zhenkun Lei, Yu Ma, Qingchao Fang, Ruixiang Bai, Wei Qiu, Cheng Yan, and Yang Feng. "Stress transfer of single yarn drawing in soft fabric studied by micro Raman spectroscopy." Composites Part A: Applied Science and Manufacturing 112, 134-141, 2018, https://doi.org/10.1016/j.compositesa.2018.06.002.

Antunes, Ana Margarida, Pedro Ribeiro, José Dias Rodrigues, and Hamed Akhavan. "Modal analysis of a variable stiffness composite laminated plate with diverse boundary conditions: experiments and modelling." Composite Structures, 239, 111974, 2020, https://doi.org/10.1016/j.compstruct.2020.111974.

Yao, Zhitong, Daidai Wu, Jerry YY Heng, Senentxu Lanceros-Méndez, Eftychios Hadjittofis, Weiping Su, Junhong Tang, Hongting Zhao, and Weihong Wu. "Comparative study of surface properties determination of colored pearl-oyster-shell-derived filler using inverse gas chromatography method and contact angle measurements." International Journal of Adhesion and Adhesives, 78, 55-59, 2017, https://doi.org/10.1016/j.ijadhadh.2017.06.018.

Lyu, WenYan, XiuMin Chen, YouBing Li, Shuang Cao, and YiMing Han. "Thermal stability and heat release effect of flame retarded PA66 prepared by end-pieces capping technology." Composites Part B: Engineering, 167, 34-43, 2019, https://doi.org/10.1016/j.compositesb.2018.12.016.

Xu, C. H., Z. H. Zhou, A. Y. T. Leung, X. S. Xu, and X. W. Luo. "The finite element discretized symplectic method for direct computation of SIF of piezoelectric materials." Engineering Fracture Mechanics, 162, 21-37, 2016, https://doi.org/10.1016/j.engfracmech.2016.05.004.

Jankowski, Piotr, Krzysztof Kamil Żur, Jinseok Kim, and Junuthula Narasimha Reddy. "On the bifurcation buckling and vibration of porous nanobeams." Composite Structures, 250, 112632, 2020, https://doi.org/10.1016/j.compstruct.2020.112632.

Standard practice for determining sandwich beam flexural and shear stiffness. ASTM D7250, 2020.