Effect of thin-wall copper on the mechanical properties of ultra-light 3D-printed polymeric sandwich panels

In this study, a portion of an ultra-light polymeric sandwich panel was produced by additive manufacturing with a dimension of 25 × 25 × 37 mm as a precursor. Then, the precursor was covered with a thin-walled copper through electroforming deposition as a portion of a copper sandwich panel. The weight of the polymeric sandwich panel increased from 2–4 g to 9–13 g for the copper sandwich panel during the electroforming process. Compressive strength and energy absorption density of the polymeric and the copper sandwich panels with open-cell cores measured for 4, 5 and 6 PPI. The results shown that the ultra-light polymeric and copper sandwich panels with 6 PPI have the best mechanical performance in terms of yield stress, energy absorption density and energy absorption efficiency. Moreover, the abovementioned characteristics are 0.09 MPa, 0.11 MJ.m⁻³ and 80% for the polymeric sandwich panels, and 1.74 MPa, 0.98 MJ.m⁻³ and 70% for the copper sandwich panels, respectively. Therefore, the addition of 9.01 g copper as a reinforcing around the core’s polymeric ligaments caused an increase in the yield stress for 20 times and in the energy absorption density for 9 times. Comparing to Ashby diagram, and previous studies, the sandwich panel portions of this study could develop the industry of sandwich panels by using the metallic shells as a reinforcement to ultralight polymeric sandwich structures.

• Record URL:
  • https://doi.org/10.1080/13588265.2024.2348281
• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/13588265
• Supplemental Notes:
  • © 2024 Informa UK Limited, trading as Taylor & Francis Group. Abstract reprinted with permission of Taylor & Francis.
• Authors:
  • Nejad, Salar Rohani
  • Hosseinpour, Mehrnoosh
  • Mirbagheri, Seyed Mohammad Hossein
• Publication Date: 2024-11

Language

• English

Media Info

• Media Type: Web
• Features: References;
• Pagination: pp 1002-1010
• Serial:
  • International Journal of Crashworthiness
  • Volume: 29
  • Issue Number: 6
  • Publisher: Taylor & Francis
  • ISSN: 1358-8265
  • Serial URL: http://www.tandfonline.com/loi/tcrs20

Subject/Index Terms

• TRT Terms: Copper; Energy absorption; Mechanical properties; Panels; Plastics; Sandwich construction; Three dimensional printing
• Subject Areas: Design; Materials; Safety and Human Factors; Transportation (General);

Filing Info

• Accession Number: 01941595
• Record Type: Publication
• Files: TRIS
• Created Date: Dec 31 2024 8:55AM