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Fabrication and Design of Wood-Based High-Performance Composites
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Drilling Damage in Composite Material.

Luís Miguel P Durão1, João Manuel R S Tavares2, Victor Hugo C de Albuquerque3

  • 1ISEP/CIDEM, School of Engineering-Polytechnic of Porto, Rua Doutor António Bernardino de Almeida, 431, Porto 4200-072, Portugal. lmd@isep.ipp.pt.

Materials (Basel, Switzerland)
|August 10, 2017
PubMed
Summary
This summary is machine-generated.

Selecting appropriate drilling tools and machining parameters is crucial for reducing drill thrust force and preventing delamination in carbon fibre reinforced laminates, thereby enhancing their reliability and extending their lifecycle.

Keywords:
bearing testcarbon fiberscomputational image processing and analysisdelaminationdrillingfiber reinforced compositesradiographythrust force

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Area of Science:

  • Materials Science
  • Mechanical Engineering
  • Manufacturing Processes

Background:

  • Carbon fibre reinforced laminates (CFRLs) are increasingly used across industries due to their advanced properties.
  • Drilling is a common manufacturing process for CFRLs, but it poses a risk of delamination.
  • Reducing drill thrust force is known to mitigate delamination in composite materials.

Purpose of the Study:

  • To compare damage assessment methods for drilled CFRLs.
  • To correlate radiographic image analysis with mechanical testing and analytical models.
  • To evaluate the impact of drilling parameters on laminate reliability.

Main Methods:

  • Radiographic image analysis for damage assessment.
  • Mechanical testing, including bearing and delamination onset tests.
  • Comparison and correlation with analytical models.

Main Results:

  • Demonstrated the effectiveness of radiographic methods for damage assessment in CFRLs.
  • Established correlations between imaging data, mechanical test outcomes, and analytical predictions.
  • Highlighted the significant influence of tool selection and machining parameters on delamination.

Conclusions:

  • Adequate selection of drilling tools and machining parameters is vital for minimizing delamination.
  • Improved reliability and extended lifecycle of CFRLs are achievable through optimized drilling processes.
  • Radiographic damage assessment provides valuable insights for process optimization.