Crack propagation and toughening mechanisms of bio-inspired artificial spicules fabricated by additive manufacturing technique

Sorour Sadeghzade, Rahmatollah Emadi, Mehdi Salehi, Fariborz Tavangarian, Abdallah Ramini

Research output: Contribution to journalArticlepeer-review

1 Scopus citations

Abstract

In this study, for the first time, we produced synthetic spicule-inspired structures (SISs) by 3D printing technology to improve both strength and toughness of brittle rigid resin. The SISs with 0.375 mm cylinder wall thickness without cores showed an improvement of 21%, 1450%, 6000% and 68% in flexural strength, strain, specific toughness and buckling stress (compared to the control samples), respectively. The Shear test results showed that SISs, provide a structure with better dispersing stress. Changing the architecture of solid rods to spiculic structures led to stopping and deflecting the crack path, and subsequently prevented catastrophic failure in these structures. Therefore, SISs can offer a novel and promising approach to increase the strength and flexibility of these brittle materials.

Original languageEnglish (US)
Article number102797
JournalTheoretical and Applied Fracture Mechanics
Volume110
DOIs
StatePublished - Dec 2020

All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanical Engineering
  • Applied Mathematics

Fingerprint Dive into the research topics of 'Crack propagation and toughening mechanisms of bio-inspired artificial spicules fabricated by additive manufacturing technique'. Together they form a unique fingerprint.

Cite this