Mechanical properties of periodic interpenetrating phase composites with novel architected microstructures

Oraib Al-Ketan, Mhd Adel Assad, Rashid K. Abu Al-Rub

Research output: Contribution to journalArticle

Abstract

In this work, we investigate the mechanical properties of novel types of 3D printed interpenetrating phase composites (IPCs) with periodic architectures. IPCs are composites with co-continuous phases that interpenetrate each other in such a way that if one of the phases is removed the remaining phase will form a self-supporting cellular structure. The topology of the architected phase is based on the mathematically-known triply periodic minimal surfaces (TPMS) that minimize the effects of stress concentrations and provide better reinforcement. Here, computer added design (CAD) is employed to design the TPMS-based IPCs, then 3D printing technique was used to fabricate polymer-polymer two-phase IPCs using Polyjet 3D printing technology. The mechanical behavior of these printed IPCs is investigated under uniaxial compression. Results show that while the hard phase endures a larger fraction of the load, the softer phase confine cracks and prevent catastrophic failure. The IPCs follow a bending-dominated deformation behavior and are potential candidates for applications were damage toleration and vibration damping is a requirement.

Original languageEnglish (US)
Pages (from-to)9-19
Number of pages11
JournalComposite Structures
Volume176
DOIs
StatePublished - Sep 15 2017

Keywords

  • 3D printing
  • Additive manufacturing (AM)
  • Interpenetrating phase composites (IPC)
  • Triply periodic minimal surfaces (TPMS)

ASJC Scopus subject areas

  • Ceramics and Composites
  • Civil and Structural Engineering

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