Drilling of woven glass fiber-reinforced plastic - An experimental and finite element study

Nilanjan Das Chakladar, Surjya K. Pal, Parthasarathi Mandal

    Research output: Contribution to journalArticlepeer-review


    Drilling in woven fiber-reinforced plastics is a well-known practice in modern-day manufacturing. The high fracture toughness of woven fiber-based composites over unidirectional counterparts is increasing demand in aviation and electronics industries. Hence, failure of these materials at harsh environments is a matter of concern. Very few numerical studies on drilling of these composites have been carried out; hence, the present scope may be considered as a trial de novo. Delamination was studied in the present work at different feed-speed combinations. Drilling responses were estimated using finite element as a numerical simulation tool. An equivalent elastic macromechanical model was assumed for the woven composite workpiece. A 3D drill bit was modeled using commercial CAD package Pro-Engineer and Ansys Autodyn was used as the solver environment. The simulation and validation experiments were carried out at planned feed-speed combinations. The effect of process parameters on exit and entry delamination is also documented. The thrust determined by finite element techniques showed good prediction with the experimental results. © Springer-Verlag London Limited 2011.
    Original languageEnglish
    Pages (from-to)267-278
    Number of pages11
    JournalInternational Journal of Advanced Manufacturing Technology
    Issue number1-4
    Publication statusPublished - Jan 2012


    • Delamination
    • Drilling
    • Glass fiber-reinforced polymer (GFRP)


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