Mechanical Behaviour of Pin-Reinforced Foam Core Sandwich Panels Subjected to Low Impact Loading

As a light structure, composite sandwich panels are distinguished by their significant bending stiffness that is rapidly used in the manufacture of aircraft bodies. This study focuses on the mechanical behaviour of through-thickness polymer, pin-reinforced foam core sandwich panels subjected to inde...

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Autores principales:	Ali Farokhi Nejad, Seyed Saeid Rahimian Koloor, Syed Mohd Saiful Azwan Syed Hamzah, Mohd Yazid Yahya
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	composite panel pin-reinforced sandwich panel low impact loading finite element model energy absorption Organic chemistry QD241-441
Acceso en línea:	https://doaj.org/article/1b127a23a7264d3e950fb74377c6e424
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spelling	oai:doaj.org-article:1b127a23a7264d3e950fb74377c6e4242021-11-11T18:41:52ZMechanical Behaviour of Pin-Reinforced Foam Core Sandwich Panels Subjected to Low Impact Loading10.3390/polym132136272073-4360https://doaj.org/article/1b127a23a7264d3e950fb74377c6e4242021-10-01T00:00:00Zhttps://www.mdpi.com/2073-4360/13/21/3627https://doaj.org/toc/2073-4360As a light structure, composite sandwich panels are distinguished by their significant bending stiffness that is rapidly used in the manufacture of aircraft bodies. This study focuses on the mechanical behaviour of through-thickness polymer, pin-reinforced foam core sandwich panels subjected to indentation and low impact loading. Experimental and computational approaches are used to study the global and internal behaviour of the sandwich panel. The samples for experimental testing were made from glass/polyester laminates as the face sheets and polyurethane foam as the foam core. To further reinforce the samples against bending, different sizes of polymeric pins were implemented on the sandwich panels. The sandwich panel was fabricated using the vacuum infusion process. Using the experimental data, a finite element model of the sample was generated in LS-DYNA software, and the effect of pin size and loading rate were examined. Results of the simulation were validated through a proper prediction compared to the test data. The results of the study show that using polymeric pins, the flexural strength of the panel significantly increased under impact loading. In addition, the impact resistance of the pin-reinforced foam core panel increased up to 20%. Moreover, the size of pins has a significant influence on the flexural behaviour while the sample was under a moderate strain rate. To design an optimum pin-reinforced sandwich panel a “design of experiment model” was generated to predict energy absorption and the maximum peak load of proposed sandwich panels. The best design of the panel is recommended with 1.8 mm face sheet thickness and 5 mm pins diameter.Ali Farokhi NejadSeyed Saeid Rahimian KoloorSyed Mohd Saiful Azwan Syed HamzahMohd Yazid YahyaMDPI AGarticlecomposite panelpin-reinforced sandwich panellow impact loadingfinite element modelenergy absorptionOrganic chemistryQD241-441ENPolymers, Vol 13, Iss 3627, p 3627 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	composite panel pin-reinforced sandwich panel low impact loading finite element model energy absorption Organic chemistry QD241-441
spellingShingle	composite panel pin-reinforced sandwich panel low impact loading finite element model energy absorption Organic chemistry QD241-441 Ali Farokhi Nejad Seyed Saeid Rahimian Koloor Syed Mohd Saiful Azwan Syed Hamzah Mohd Yazid Yahya Mechanical Behaviour of Pin-Reinforced Foam Core Sandwich Panels Subjected to Low Impact Loading
description	As a light structure, composite sandwich panels are distinguished by their significant bending stiffness that is rapidly used in the manufacture of aircraft bodies. This study focuses on the mechanical behaviour of through-thickness polymer, pin-reinforced foam core sandwich panels subjected to indentation and low impact loading. Experimental and computational approaches are used to study the global and internal behaviour of the sandwich panel. The samples for experimental testing were made from glass/polyester laminates as the face sheets and polyurethane foam as the foam core. To further reinforce the samples against bending, different sizes of polymeric pins were implemented on the sandwich panels. The sandwich panel was fabricated using the vacuum infusion process. Using the experimental data, a finite element model of the sample was generated in LS-DYNA software, and the effect of pin size and loading rate were examined. Results of the simulation were validated through a proper prediction compared to the test data. The results of the study show that using polymeric pins, the flexural strength of the panel significantly increased under impact loading. In addition, the impact resistance of the pin-reinforced foam core panel increased up to 20%. Moreover, the size of pins has a significant influence on the flexural behaviour while the sample was under a moderate strain rate. To design an optimum pin-reinforced sandwich panel a “design of experiment model” was generated to predict energy absorption and the maximum peak load of proposed sandwich panels. The best design of the panel is recommended with 1.8 mm face sheet thickness and 5 mm pins diameter.
format	article
author	Ali Farokhi Nejad Seyed Saeid Rahimian Koloor Syed Mohd Saiful Azwan Syed Hamzah Mohd Yazid Yahya
author_facet	Ali Farokhi Nejad Seyed Saeid Rahimian Koloor Syed Mohd Saiful Azwan Syed Hamzah Mohd Yazid Yahya
author_sort	Ali Farokhi Nejad
title	Mechanical Behaviour of Pin-Reinforced Foam Core Sandwich Panels Subjected to Low Impact Loading
title_short	Mechanical Behaviour of Pin-Reinforced Foam Core Sandwich Panels Subjected to Low Impact Loading
title_full	Mechanical Behaviour of Pin-Reinforced Foam Core Sandwich Panels Subjected to Low Impact Loading
title_fullStr	Mechanical Behaviour of Pin-Reinforced Foam Core Sandwich Panels Subjected to Low Impact Loading
title_full_unstemmed	Mechanical Behaviour of Pin-Reinforced Foam Core Sandwich Panels Subjected to Low Impact Loading
title_sort	mechanical behaviour of pin-reinforced foam core sandwich panels subjected to low impact loading
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/1b127a23a7264d3e950fb74377c6e424
work_keys_str_mv	AT alifarokhinejad mechanicalbehaviourofpinreinforcedfoamcoresandwichpanelssubjectedtolowimpactloading AT seyedsaeidrahimiankoloor mechanicalbehaviourofpinreinforcedfoamcoresandwichpanelssubjectedtolowimpactloading AT syedmohdsaifulazwansyedhamzah mechanicalbehaviourofpinreinforcedfoamcoresandwichpanelssubjectedtolowimpactloading AT mohdyazidyahya mechanicalbehaviourofpinreinforcedfoamcoresandwichpanelssubjectedtolowimpactloading
_version_	1718431749134876672

Mechanical Behaviour of Pin-Reinforced Foam Core Sandwich Panels Subjected to Low Impact Loading

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