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Multifunctional cellular sandwich structures with optimised core topologies for improved mechanical properties and energy harvesting performance
Chen, Boyue Narita, Fumio Wang, Congsi Jia, Yu Shi, Yu
Chen, Boyue
Narita, Fumio
Wang, Congsi
Jia, Yu
Shi, Yu
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EPub Date
Publication Date
2022-04-13
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Abstract
This paper developed a multifunctional composite sandwich structure with optimised design on topological cores. As the main concern, full composite sandwich structures were manufactured with carbon fibre reinforced polymer (CFRP) facesheets and designed cores. Three-point bending tests have been performed to assess the mechanical performance of designed cellular sandwich structures. To evaluate the energy harvesting performance, the piezoelectric transducer was integrated at the interface between the upper facesheet and core, with both sinusoidal base excitation input and acceleration measured from real cruising aircraft and vehicle. It has been found that the sandwich with conventional honeycomb core has demonstrated the best mechanical performance, assessed under the bending tests. In terms of energy harvesting performance, sandwich with re-entrant honeycomb manifested approximately 20% higher RMS voltage output than sandwiches with conventional honeycomb and chiral structure core, evaluated both numerically and experimentally. The resistance sweep tests further suggested that the power output from sandwich with re-entrant honeycomb core was twice as large as that from sandwiches with conventional honeycomb and chiral structure cores, under optimal external resistance and sinusoidal base excitation.
Citation
Chen, B., Jia, Y., Narita, F., Wang, C., & Shi, Y. (2022). Multifunctional cellular sandwich structures with optimised core topologies for improved mechanical properties and energy harvesting performance. Composites Part B: Engineering, 238, 109899. https://doi.org/10.1016/j.compositesb.2022.109899
Publisher
Elsevier
Journal
Composites Part B: Engineering
Research Unit
DOI
10.1016/j.compositesb.2022.109899
PubMed ID
PubMed Central ID
Type
Article
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Series/Report no.
ISSN
1359-8368
EISSN
1879-1069