Evaluation of laser surface irradiation on the mode i fracture toughness of composite joints with CFRP adherends

Ran Tao, Marco Alfano, Gilles Lubineau

Research output: Contribution to conferencePaperpeer-review

Abstract

Secondary bonding of cured carbon fiber reinforced polymer (CFRP) laminates using structural adhesives has attracted great attention from the aerospace industry. The most important process step to achieve reliable joints is the execution of a proper surface pre-treatment. In this paper, pulsed CO2 laser irradiation was employed to increase the mode I fracture toughness of CFRP adhesive joints. In order to evaluate the effect of laser irradiation on CFRPs, surface chemistry and morphology were assessed through XPS and SEM analyses. The mode I fracture toughness was determined using the DCB specimen and fracture surfaces were surveyed using optical and SEM.

Original languageEnglish (US)
StatePublished - Jan 1 2017
Event21st International Conference on Composite Materials, ICCM 2017 - Xi'an, China
Duration: Aug 20 2017Aug 25 2017

Conference

Conference21st International Conference on Composite Materials, ICCM 2017
CountryChina
CityXi'an
Period08/20/1708/25/17

Keywords

  • Adhesive joints
  • Composite laminates
  • Fracture toughness
  • Laser irradiation

ASJC Scopus subject areas

  • Engineering(all)
  • Ceramics and Composites

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