Self-sensing composites: In-situ detection of fibre fracture

Shoaib A. Malik, Liwei Wang, Paul T. Curtis, Gerard F. Fernando

Research output: Contribution to journalArticlepeer-review

8 Citations (Scopus)
181 Downloads (Pure)

Abstract

The primary load-bearing component in a composite material is the reinforcing fibres. This paper reports on a technique to study the fracture of individual reinforcing fibres or filaments in real-time. Custom-made small-diameter optical fibres with a diameter of 12 (±2) micrometres were used to detect the fracture of individual filaments during tensile loading of unreinforced bundles and composites. The unimpregnated bundles were end-tabbed and tensile tested to failure. A simple technique based on resin-infusion was developed to manufacture composites with a negligible void content. In both cases, optical fibre connectors were attached to the ends of the small-diameter optical fibre bundles to enable light to be coupled into the bundle via one end whilst the opposite end was photographed using a high-speed camera. The feasibility of detecting the fracture of each of the filaments in the bundle and composite was demonstrated. The in-situ damage detection technique was also applied to E-glass bundles and composites; this will be reported in a subsequent publication.

Original languageEnglish
Article number615
JournalSensors
Volume16
Issue number5
Early online date28 Apr 2016
DOIs
Publication statusPublished - 1 May 2016

Keywords

  • Damage detection
  • Fibre fracture
  • Optical fibre sensors
  • Self-sensing
  • Structural health monitoring

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Atomic and Molecular Physics, and Optics
  • Analytical Chemistry
  • Biochemistry

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