Abstract
This paper investigates the adhesive effect between the surface layer of sandwich panel with three different core surface configurations by using a peel simulation approach. The sandwich panels with cavity on the core structure can potentially be highly vulnerable to debonding phenomenon when subjected to extreme loading. The three-dimensional sandwich panels based on ASTM D1876 were developed with a finite element modelling and subjected to a constant loading magnitude of 100 MPa in two force directions of 90° and 180°. The result shows that the sandwich panel with a honeycomb core and a dimpled surface core showed increments in stress distributions at bonding area (85 % and 12.8 % at the force direction of 90°; 69.9 % and 11.6 % at the force direction of 180°) compared to that with a solid plate core. Nevertheless, the high shear stress was revealed at a large adhesive area, indicating the high potential for debonding to occur at the adhesive area between panel surface layers. This stress was directly proportional to the total deformation. The size of the adhesive area influences the bonding strength, but an extra reduction in the core density could lead to the early failure of the sandwich panel.
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The authors wish to acknowledge Universiti Kebangsaan Malaysia research grants (FRGS/1/2019/TK03/UKM/01/3 and DIP-2019-015) for the research funding and facilities provided.
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Mohd Khairul Faidzi is a second year Ph.D. student of Department of Mechanical & Manufacturing Engineering at Universiti Kebangsaan Malaysia. His research interests related to the damage mechanics and data analysis.
Shahrum Abdullah is currently a Professor at the Department of Mechanical & Manufacturing Engineering, Faculty of Engineering and Built Environment, Universiti Kebangsaan Malaysia. His research interests include fatigue life assessment and signal analysis.
Mohamad Faizal Abdullah is currently a Lecturer at the Department of Mechanical Engineering, Faculty of Engineering, Universiti Pertahanan Nasional Malaysia. His research interests include ballistic engineering and damage mechanics.
Salvinder Singh Karam Singh is currently a Lecturer at the Department of Mechanical & Manufacturing Engineering, Faculty of Engineering and Built Environment, Universiti Kebangsaan Malaysia. His research interests include fatigue reliability and durability analysis.
Abdul Hadi Azman is currently a Lecturer at the Department of Mechanical & Manufacturing Engineering, Faculty of Engineering and Built Environment, Universiti Kebangsaan Malaysia. His research interests include mechanical engineering design and additive manufacturing.
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Faidzi, M.K., Abdullah, S., Abdullah, M.F. et al. Evaluating an adhesive effect on core surface configuration for sandwich panel with peel simulation approach. J Mech Sci Technol 35, 2431–2439 (2021). https://doi.org/10.1007/s12206-021-0514-3
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DOI: https://doi.org/10.1007/s12206-021-0514-3