This is the first attempt to combine disposed bottle caps and natural fibres into sandwich panels. A full factorial design is performed to identify the effects of the skin type (aluminium or coir fibre reinforced laminates) and bottle cap core packing (cubic and orthotropic) on the mechanical properties of the proposed panels. The coir fibre composite skin provides maximum core shear strength, 29 % higher than the aluminium-based panels, in cubic packing, while the flexural modulus is reduced by...
Abstract Honeycomb sandwich structures are widely employed in the engineering field, due to their light weight, strong rigidity and high strength. In this study, the bending resistance performance of the honeycomb sandwich panel with ceramic tile face-sheet (short as ceramic sandwich) was investigated through three-point bending experiments. Their differences between the present ceramic sandwich and the conventional ones were reported and discussed in terms of deformation mode, load-deflection h...
Abstract The dimensional stability and dynamic mechanical properties on bamboo (non woven mat)/kenaf (woven mat) hybrid composites was carried out in this study. The hybridization effect of bamboo (B) and kenaf (K) fibers at different weight ratio were studied at B:K:70:30, and B:K:30:70 while maintaining total fiber loading of 40% by weight. The coefficient of thermal expansion (CTE) and dynamic mechanical properties of composites were analyzed by thermomechanical anlayzer (TMA), and dynamic me...
Abstract The flexural stiffness and ultimate load capacity of novel ultralight composite sandwich panels, made of plywood faces and bamboo or peeling cores are investigated herein. Modified Ritz method and sandwich beam theory formulations for composite sandwich panels with thick faces and thick/stiff cores are developed, and are used to find the bending stiffness of the panels in one-way and two-way bending. The ultimate capacity and failure modes of the panels are then predicted from nonlinear...
Last. Xiao-Bo Liang(JLU: Jilin University)H-Index: 4
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Abstract The manufacturing of shaped sandwich components is a task with technical challenge. In this paper the mechanical feasibility to produce a doubly curved panel from an initially flat sandwich plate was investigated. Experimental results of multi-point forming (MPF) and finite element analyses reveal that the formability of sandwich panel with egg-box-like (EBL) cores in plastic forming process is mainly dominated by the failure modes of face sheet plastic wrinkling, face sheet plastic dim...
Last. Fabrizio Scarpa(UoB: University of Bristol)H-Index: 69
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Abstract This work further investigates the manufacture and characterisation of a sustainable sandwich panel made from aluminium skins and a recycled thermoplastic bottle cap core, an innovative concept proposed in a previous paper. A full factorial design based on Design of Experiments (DoE) and Analysis of Variance (ANOVA) techniques has highlighted the complex influence of three manufacturing parameters (type of polymeric adhesive, adhesive layer thickness layer and core packing topology) on ...
#1Zhonggang Wang(CSU: Central South University)H-Index: 18
#2Zhendong Li(CSU: Central South University)H-Index: 6
Last. David Hui(UNO: University of New Orleans)H-Index: 77
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Abstract Defect in honeycomb has been paid close attention in recent years, as it significantly threats on its performance. In this study, detailed behavior and influence were extensively investigated in terms of defect distribution, influence on the mechanical performance, as well as the improvement methodology. Firstly, quasi-static experiments were extensively conducted to directly evaluate the inhomogeneity with 12 sub-blokes divided from a given conventional man-made honeycomb core. Varianc...
#1Jianfeng Wang(HIT: Harbin Institute of Technology)H-Index: 5
#2Chengyang Shi(HIT: Harbin Institute of Technology)H-Index: 2
Last. Baoyu Song(HIT: Harbin Institute of Technology)H-Index: 3
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Abstract Due to its superior performance, composite sandwich structure materials are widely used in the automobile industry, especially for vehicle body applications. Optimization of the design of composite aluminum honeycomb sandwich structures is therefore of great significance. In this study, carbon fiber-reinforced composite sandwich structures cured at high temperatures with aluminum honeycomb structures as the core material were investigated. Specifically, the effects of core thickness and...
Last. Frano Penava(University of Zagreb)H-Index: 2
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Abstract Bamboo as an eco-friendly material has potential as construction material and proves his suitability in use as an alternative for more traditional materials such as steel, aluminium and composite. This work presents the influence of humidity on mechanical properties of two different bamboos, Pseudosasa amabilis (or Tonkin Cane) and Pleioblastus amarus (or Ku Zhu) which are used for bicycle frames. A large number of tensile, compression and bending tests were carried out in two condition...
Last. Lin Yan(SCUT: South China University of Technology)H-Index: 1
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Abstract Bamboo has been widely used as a rapidly renewable structural material to build permanent and temporary structures in past decades. However, the compressive bearing capacity of bamboo is relatively low, which limits its applications only in the structures under light loads. This paper proposed an innovative scheme to improve the load bearing capacity of bamboo by filling concrete or cement mortar in bamboo cavity. An experimental study on the axial load behavior of material-filled struc...
