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Induced drilling strains in glass fibre reinforced epoxy composites

Article dans une revue avec comité de lecture
Author
NOBRE, Joao Paulo
STIFFEL, J.-H.
NAU, A.
MARTINS DO OUTEIRO, Jose Carlos
127742 Laboratoire Bourguignon des Matériaux et Procédés [LABOMAP]
BATISTA, Antonio
VAN PAEPEGEM, W.
SCHOLTES, B.

URI
http://hdl.handle.net/10985/6995
Date
2013
Journal
CIRP Annals - Manufacturing Technology

Abstract

Residual strains induced by drilling of glass-fibre reinforced polymers (GFRP) were determined using a hybrid experimental-numerical methodology. Experimentally, a set of GFRP specimens were drilled under well-defined tensile (calibration) stresses, using an especially designed tensile test device. To remove the effect of the initial residual stresses, this methodology considers differential stress values instead of absolute ones. Numerically, the experimental procedure was simulated using the finite element method. The induced drilling strains were determined by comparing the experimental measured strains with those calculated numerically. Clear differences between the selected drilling operations could be observed and evaluated.

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