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Second order hierarchical sandwich structure made of self-reinforced polymers by means of a continuous folding process
KTH, School of Engineering Sciences (SCI), Aeronautical and Vehicle Engineering. Swerea.
2016 (English)In: Materials & design, ISSN 0264-1275, E-ISSN 1873-4197, Vol. 102, 313-320 p.Article in journal (Refereed) PublishedText
Abstract [en]

One typical way to obtain higher stiffness and strength to weight ratios within structural applications is to use sandwich structures containing lightweight cellular cores. In this study a novel second order hierarchical sandwich structure and its manufacturing principle are described. The whole hierarchical structure is made of a fully recyclable material - different forms of poly-ethylene terephthalate (PET): PET matrix, reinforced with PET fibres (Self reinforced - SrPET) and PET foam resulting in a recyclable structure. The manufacturing path is developed such that it can be implemented within a continuous production line. Out-of-plane compression test are carried out in order to determine the stiffness and strength properties of the proposed structure. An analytical model is developed for evaluating the out-of-plane stiffness and strength properties and used for investigating the influence of the geometric parameters on the structural performance of the proposed hierarchical sandwich structure. (C) 2016 Elsevier Ltd. All rights reserved.

Place, publisher, year, edition, pages
Elsevier, 2016. Vol. 102, 313-320 p.
Keyword [en]
Hierarchical sandwich structure, Thermoplastic composites, Self-reinforced polymers, Folded structure, Optimization
National Category
Materials Engineering
URN: urn:nbn:se:kth:diva-188703DOI: 10.1016/j.matdes.2016.04.049ISI: 000376462500035ScopusID: 2-s2.0-84973098659OAI: diva2:939856

QC 20160620

Available from: 2016-06-20 Created: 2016-06-17 Last updated: 2016-06-20Bibliographically approved

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