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CSME 2022/10
Volume 43 No.5
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473-483
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Investigation of the Static and Dynamic Behavior of a 3D-Printed PFF Sandwich Composite with Conventional Honeycomb and Auxetic Core
Khawla Essassi a, Khawla Essassi b, Nabih Feki b, Wafa Taktak b, Jean-Luc Rebiere a, Abderrahim El Mahi a, Mahamane Toure a, Mohamed Amine Ben Souf b, Anas Bouguecha b and Mohamed Haddar b
aAcoustics Laboratory of Mans University (LAUM) UMR CNRS 6613, Le Mans University, Av. O. Messiaen, 72085 Le Mans cedex 9, France
bLaboratory of Mechanics Modeling and Production (LA2MP), National School of Engineers of Sfax, University of Sfax, BP N° 1173, 3038 Sfax, Tunisia
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Abstract:
The environmental problems demanded to use bio-material in several industrial applications. In this case, the use of biological material in composite structure have been increased in this century. The main idea of this research is to use a bio-based material in sandwich composite structure dedicated to transport industrial applications. Also, auxetic structures have presented a good mechanical property such as higher stiffness, strength, and energy absorption. This study presents an experimental analysis of the static and dynamic properties of a bio-sandwich composite with conventional honeycomb and auxetic core. An additive manufacturing technique is used to produce the sandwich composites. Static tensile, static and fatigue three-point bending and vibration tests were used to characterize the tested sandwiches. The effect of the bio-based material, the number of cells in the core as well as the core topology are investigated. The Young modulus and ultimate strength and strain under tensile tests are determined for the two tested material which are the polylactic acid and the polylactic acid reinforced with flax fibers. Also, the static bending stiffness is calculated for each sandwich configurations.
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Keywords: auxetic, bending, dynamic, conventional honeycomb
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©
2022
CSME , ISSN 0257-9731
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