Sustainable sandwich structures made from bottle caps core and aluminium skins: A statistical approach

Published on Sep 1, 2018in Thin-walled Structures4.442
· DOI :10.1016/J.TWS.2018.06.003
Pablo Resende Oliveira8
Estimated H-index: 8
,
Túlio Hallak Panzera23
Estimated H-index: 23
+ 1 AuthorsFabrizio Scarpa69
Estimated H-index: 69
(UoB: University of Bristol)
Sources
Abstract
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 the absolute and specific physical and flexural properties of the panels. The ANOVA revealed that the use of higher amount of epoxy polymer led to enhanced panel strength and stiffness. The cell packing topology, however, did not provide a significant effect on most panel properties. Discarded bottle caps have proven to be a promising lightweight and inexpensive honeycomb component for structural applications.
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#2Jiayi Liu (HUST: Huazhong University of Science and Technology)H-Index: 13
Last. W.X. Huang (HUST: Huazhong University of Science and Technology)H-Index: 71
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Abstract A novel all-composite sandwich structure with Y-shaped cores was designed and fabricated by hot-press molding method in this paper. In order to reveal effects of relative density on mechanical behavior, the out-of-plane compressive tests were carried out on composite sandwich structures with different relative densities, varying from 5.34% to 10.53%. Then the effects of relative density on failure modes, mechanical properties, stress-strain curves and energy absorption capacity were stu...
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#1Pablo Resende Oliveira (UFSJ: Universidade Federal de São João del-Rei)H-Index: 8
#2Aline Maria Silva Bonaccorsi (UFSJ: Universidade Federal de São João del-Rei)H-Index: 1
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Abstract This work describes the development of a sustainable and low-cost sandwich composite structure made from aluminium skins and bonded to a tubular core with epoxy resin. The core is made from disposed plastic bottle caps. An analysis of variance (ANOVA) has been performed to determine the significance of the orientation of the bottle caps in the core, the use and type of adhesive over the bulk density and the mechanical properties of the sandwich panels. The results show that a core topol...
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#1Fu Gu (University of Nottingham)H-Index: 7
#2Philip Hall (University of Nottingham)H-Index: 15
Last. Nicholas J. Miles (University of Nottingham)H-Index: 21
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Abstract It is more economic and environmental-friendly to use recycled plastics in manufacturing, especially under the context of circular economy. Since there are many which formulae exist which improve the different properties of recycled plastics, there is a need to develop decision support tools for evaluating the materials based on multiple properties. In this study, principal component analysis (PCA) was used as a decision support tool to evaluate the performance of plastic composites bas...
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#1Jiayi Liu (HUST: Huazhong University of Science and Technology)H-Index: 13
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Abstract The effects of temperature on the bending properties and failure mechanism of carbon fiber reinforced polymer composite sandwich structure with pyramidal truss cores were investigated and presented in this paper. The three-point bending tests of composite sandwich structures were performed at seven different temperatures, and the scanning electron microscope was used to examine the fiber-matrix interface properties in order to understand the deformation and failure mechanism. Then the e...
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#1Lingling Hu (SYSU: Sun Yat-sen University)H-Index: 18
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The dynamic crushing of circular-celled honeycombs under out-of-plane impact is studied within a wide range of impact velocity by using both theoretical and numerical methods, and verified by the experiments. Two kinds of honeycombs with different cell package, i.e., the SP and HP honeycombs, are considered. The results of the honeycombs are discussed and compared with those of the cylindrical tubes under axial compression. An analytical expression is deduced to predict the honeycombs' crushing ...
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Abstract Structural members made up of two stiff, strong skins separated by a lightweight core are known as sandwich panels. The separation of the skins by the core increases the moment of inertia of the panel with little increase in weight, producing an efficient structure against in-plane and out-of-plane loadings. In general, the mechanical behavior of cellular structures is given by the effective elastic modules, which are also dependent on the structure topology and different geometric para...
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#1Ting Chun Lin (NCKU: National Cheng Kung University)H-Index: 3
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Abstract The in-plane elastic modulus, Poisson’s ratio, brittle crushing strength and plastic yielding strength of honeycombs with hexagonally packed circular cells are analyzed theoretically. The resulting theoretical expressions are compared with the numerical results obtained from a series of finite element analyses for circular cell honeycombs with various relative densities, leading to a good correlation. It is also found that the in-plane mechanical properties of circular cell honeycombs a...
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The effect of the amount of adhesive for bonding face sheets and cores on the bending fatigue strength of aluminum honeycomb sandwich beams was analyzed. It was experimentally proved that the fatigue strength increases as increasing the amount of adhesive. Furthermore, the applied loading parameter is not correlated with the fatigue life data of all studied specimens with various amounts of adhesive because the global parameter has no clear physical meanings with respect to the failure mechanism...
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Abstract In this work the effects of both the substrate surface condition and the adhesive properties on single-lap aluminium joint resistance were analysed. The aluminium sheets were mechanically treated with two abrasive surfaces evaluating the induced roughness; four different resins were used in adhesion tests. Moreover, wettability tests were performed in order to evaluate the effect of the above-mentioned parameters on the substrate/adhesive interaction. A design of experiments was defined...
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