Detection and quantification of composite surface contaminants with an e-nose for fast and reliable pre-bond quality assessment of aircraft components

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Abstract

Composite Fiber Reinforced Polymers (CFRP) are at the basis of the so-called green aircraft production. In order to exploit the full potential of CFRPs for lightweight structures in aeronautic industry, there is a strong need to apply adhesive bonding as the appropriate joining technology to load-critical CFRP primary structures. Up to now, it is not possible to reach this important goal because of the unavailability of an adequate quality assurance concept (e.g. pre-bond surface inspection), which guarantees the safety of the adhesive joint and therefore enables certification. Surface contamination is a primary concern for joint quality severely limiting the robustness of the adhesion. In this work, we show how an electronic nose solution could be designed and used as a non-destructive tool for pre-bond surface inspection. An ad-hoc pattern recognition system is also devised for ensuring a fast and reliable assessment of contamination status by combining real-time classifiers and implementing a reject option. Results show that e-nose can be a reliable choice for a first line low-cost NDT tool in aerospace CFRP assembly and maintenance scenarios.
Original languageEnglish
Pages (from-to)-
JournalSensors and Actuators, B: Chemical
Volume222
DOIs
Publication statusPublished - 1 Jan 2016

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All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Instrumentation
  • Condensed Matter Physics
  • Surfaces, Coatings and Films
  • Metals and Alloys
  • Electrical and Electronic Engineering
  • Materials Chemistry

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