Potentiality of MWCNT on 3D-printed bio-inspired spherical-roof cubic core under quasi-static loading

Ma Q 1 , Rejab MRM 2 , Hassan SA 3 , Hu H 4 , Kumar AP 5

Affiliations 

  • 1 Structural Performance Materials Engineering (SUPERME) Focus Group, Faculty of Mechanical & Automotive Engineering Technology, Universiti Malaysia Pahang, 26600, Pekan, Pahang, Malaysia; School of Mechanical Engineering, Ningxia University, 750021, Yinchuan, China. Electronic address: neromaquanjin@gmail.com
  • 2 Structural Performance Materials Engineering (SUPERME) Focus Group, Faculty of Mechanical & Automotive Engineering Technology, Universiti Malaysia Pahang, 26600, Pekan, Pahang, Malaysia; School of Mechanical Engineering, Ningxia University, 750021, Yinchuan, China. Electronic address: ruzaimi@ump.edu.my
  • 3 Faculty of Engineering, Universiti Teknologi Malaysia, Skudai, Johor, Malaysia
  • 4 School of Mechanical and Engineering, Tianjin Sino-German University of Applied Sciences, Tianjin, 300350, China
  • 5 Department of Mechanical Engineering, Easwari Engineering College, Chennai, India
J Mech Behav Biomed Mater, 2022 Dec;136:105514.
PMID: 36215770 DOI: 10.1016/j.jmbbm.2022.105514

Abstract

Sandwich panel is increasingly used as lightweight energy absorbing components, which provides excellent crashworthiness performance with the three-dimensional periodic core. This paper investigates 3D-printed bio-inspired spherical-roof cubic cores with multi-walled carbon nanotubes (MWCNT) and foam-filled cores under quasi-static loading. The proposed bio-inspired spherical-roof cubic cores with 1.5 mm wall thickness were manufactured using the fused filament fabrication process, which used 70% polylactic acid (PLA) and 30% carbon fiber filament. Moreover, four groups of 3D-printed bio-inspired spherical-roof cubic cores were compared and analyzed on compressive properties and failure behavior. Experimental results were shown that foam-filled double bio-inspired spherical-roof cubic core with MWCNT was the maximum Fpeak with 1.92 kN, which provided a much more stable plateau load and better energy-absorbing characteristics. In addition, it is conducted that a double bio-inspired spherical-roof cubic core with four notches core is considered as the potential energy-absorbing core.

* Title and MeSH Headings from MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.

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