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Fracture Behaviours in Compression-loaded Triangular Corrugated Core Sandwich Panels

N. Z. M., Zaid and M. R. M., Rejab and A. F., Jusoh and Bachtiar, Dandi and Siregar, J. P. and Zhang, Dian Ping (2016) Fracture Behaviours in Compression-loaded Triangular Corrugated Core Sandwich Panels. In: MATEC Web of Conferences: 2nd International Conference on Green Design and Manufacture ((IConGDM 2016), 1-2 May 2016 , Phuket, Thailand. pp. 1-9., 78 (01041). ISSN 2261-236X

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The failure modes occurring in sandwich panels based on the corrugations of aluminium alloy, carbon fibre-reinforced plastic (CFRP) and glass fibre-reinforced plastic (GFRP) are analysed in this work. The fracture behaviour of these sandwich panels under compressive stresses is determined through a series of uniform lateral compression performed on samples with different cell wall thicknesses. Compression test on the corrugated-core sandwich panels were conducted using an Instron series 4505 testing machine. The post-failure examinations of the corrugated-core in different cell wall thickness were conducted using optical microscope. Load-displacement graphs of aluminium alloy, GFRP and CFRP specimens were plotted to show progressive damage development with five unit cells. Four modes of failure were described in the results: buckling, hinges, delamination and debonding. Each of these failure modes may dominate under different cell wall thickness or loading condition, and they may act in combination. The results indicate that thicker composites corrugated-core panels tend can recover more stress and retain more stiffness. This analysis provides a valuable insight into the mechanical behaviour of corrugated-core sandwich panels for use in lightweight engineering applications.

Item Type: Conference or Workshop Item (Speech)
Subjects: T Technology > TJ Mechanical engineering and machinery
Faculty/Division: Faculty of Mechanical Engineering
Depositing User: Mrs. Neng Sury Sulaiman
Date Deposited: 06 Apr 2017 07:13
Last Modified: 14 Feb 2018 05:59
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