Effect of linear density on the mechanical properties of 3D spacer composites with improved manufacturing quality

Dinçer M., Karci E., Halil Sahin I., Emre C., Ozkendirci B., Ozden Yenigun E., ...More

Composite Structures, vol.323, 2023 (SCI-Expanded) identifier

  • Publication Type: Article / Article
  • Volume: 323
  • Publication Date: 2023
  • Doi Number: 10.1016/j.compstruct.2023.117518
  • Journal Name: Composite Structures
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Academic Search Premier, Aerospace Database, Chimica, Communication Abstracts, Compendex, INSPEC, Metadex, Civil Engineering Abstracts
  • Keywords: 3D woven, Compressive strength, Flexural strength, I-beam spacer fabric, Linear density, The vacuum infusion process
  • Istanbul Technical University Affiliated: Yes

Abstract

The innovative 3D weaving method allows I-beams to be woven in one piece and promises to eliminate delamination failure with the interlacing yarns. Therefore, woven I-beam composites have been developed to improve the resistance of laminated I-beam composite structures against delamination. In this study, woven I-beam fabrics (IBFs) were produced by the 3D weaving method by using 300, 600, and 1200 TEX E-glass fibers with a custom-built weaving machine. Then, IBFs were made into woven I-beam composites (IBCs) using the vacuum infusion method (VIP) to examine the influence of linear density on the mechanical properties of IBCs. The results of the three-point bending test represent that 300 TEX, 600 TEX (warp density: 20 ends/cm), 600 TEX (warp density: 12 ends/cm), and 1200 TEX samples had an average maximum flexural stress of 8.6, 9.2, 8.5, and 8.8 MPa, respectively. The compression strengths for 300 TEX, 600 TEX (warp density: 20 ends/cm), 600 TEX (warp density: 12 ends/cm), and 1200 TEX were 2.6 MPa, 3.8 MPa, 2.9 MPa, and 4.1 MPa, respectively.