Quantitative evaluation of the sheared edge of woven glass epoxy laminate after mechanical punching

Hyun Seok Choi, Yong Jun Jeon, Woo Chun Choi, Dong Earn Kim

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)


Fiber-reinforced composites have a wide range of industrial applications owing to their light weight, high modulus, and good specific strength. Trimming using a mechanical punching tool is the fastest way to post process fiber-reinforced composites. However, quantitative analyses of the defects and process parameters are required to analyze the damage mechanisms and achieve high-quality cut surfaces. In this study, we quantitively investigated the defects on the sheared edge of woven glass epoxy laminates subjected to mechanical punching and explored the correlations between these defects and key process parameters, including punch-die clearance, weave alignment angle, and laminate thickness. The results demonstrate the necessity of considering glass fiber burr length and the dimensions of the cracked area simultaneously to evaluate the quality of the sheared surface. This study provides qualitative data on the interfacial damage mechanisms that occur during mechanical punching, which will help to tailor the process parameters of mechanical punching for fiber-reinforced polymers to obtain smooth cut surfaces.

Original languageEnglish
Pages (from-to)2313-2321
Number of pages9
JournalInternational Journal of Advanced Manufacturing Technology
Issue number7-8
Publication statusPublished - 2023 Feb

Bibliographical note

Publisher Copyright:
© 2022, The Author(s), under exclusive licence to Springer-Verlag London Ltd., part of Springer Nature.


  • Burr
  • Epoxy
  • Glass fiber
  • Punch and die clearance
  • Sheared edge
  • Trimming

ASJC Scopus subject areas

  • Control and Systems Engineering
  • Software
  • Mechanical Engineering
  • Computer Science Applications
  • Industrial and Manufacturing Engineering


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