Synchrotron micro-CT in kink-band formation of UD-CFRP laminates with microdefects

Jiraphant Srisuriyachot, Jean Bénézech, Guillaume Couégnat, Sophie a.m. Mcnair, Thomas Maierhofer, Richard Butler, Alexander j.g. Lunt

Research output: Contribution to journalArticlepeer-review

6 Citations (SciVal)

Abstract

This paper presents the first synchrotron micro-Computed Tomography (micro-CT) study on in-situ pure compressive kink-band failure in Uni-Directional Carbon Fibre-Reinforced Polymer composites (UD-CFRPs) with a notch. The study compares the failure behaviour of baseline samples under standard conditions with defect-rich samples containing micro-defects such as voids and fibre misalignment. Quantitative image-based analysis using the structure tensor technique and Digital Volume Correlation (DVC) reveals changes in fibre orientation and localised strain, respectively, at each increment load. A large 400
µm kink-band inclined at 30° with a half-cosine wave fibre orientation is observed in the baseline samples, while the defect-rich samples form narrower conjugate kink bands (ranging from 77 µm 25 µm) inclined at 45°. Development of kink-band formations/failure of both samples is discussed and compared with literature, providing key implications for the design and safe use of this type of composite layup.
Original languageEnglish
Article number111038
Number of pages14
JournalComposites Part B: Engineering
Volume266
Early online date10 Oct 2023
DOIs
Publication statusPublished - 1 Nov 2023

Bibliographical note

Funding Information:
This work was supported by the UKRI - Engineering and Physical Sciences Research Council, United Kingdom, Grant ‘Certification for Design - Reshaping the Testing Pyramid’ EP/S017038/1. Jiraphant Srisuriyachot is funded by GKN Aerospace, United Kingdom. The Diamond Light Source is acknowledged for providing the beamtime on I13-2 beamline under the experiment number MG28362-2.

Funding Information:
This work was supported by the UKRI - Engineering and Physical Sciences Research Council, United Kingdom , Grant ‘Certification for Design - Reshaping the Testing Pyramid’ EP/S017038/1 . Jiraphant Srisuriyachot is funded by GKN Aerospace, United Kingdom . The Diamond Light Source is acknowledged for providing the beamtime on I13-2 beamline under the experiment number MG28362-2.

Publisher Copyright:
© 2023 The Author(s)

Keywords

  • A. Carbon fibre
  • B. Defects
  • C. Micro-mechanics
  • D. Non-destructive testing
  • Kink-band formation

ASJC Scopus subject areas

  • Mechanics of Materials
  • Ceramics and Composites
  • Mechanical Engineering
  • Industrial and Manufacturing Engineering

Fingerprint

Dive into the research topics of 'Synchrotron micro-CT in kink-band formation of UD-CFRP laminates with microdefects'. Together they form a unique fingerprint.

Cite this