Drilling Damage of GFRP and Residual Mechanical Behavior—Part I: Drilling Damage Generation

Citations Over TimeTop 17% of 2001 papers

Abstract

The drilling of composite laminates generates several kinds of damage that can be detrimental to the mechanical behavior around the hole. The present work is the first part of a study that investigates the effect of the drilling on the residual mechanical behavior of glass fiber reinforced plastic (GFRP) laminates when the hole is subjected to bearing load. In the first part, the influence of drilling parameters on the type and extension of the damage is analyzed. The damage is described at the macro level (delaminated area) and at the micro level (cracks, fiber-matrix debonding, etc.). The Design of Experiments and Analysis of Variance techniques are used in order to determine the statistical influence of the drilling parameters on the delamination area. Moreover, the effects of drilling with or without a support beneath the specimens are analyzed and discussed. Results indicate that the degree of peel-up delamination depends on the feed rate and on the helix angle of the twist drill. Push-down delamination is mainly affected by the feed rate, by the presence of support beneath the specimen, and by the twist drill temperature.

Related Papers

• → Bond Strength of Near Surface-Mounted FRP Plate in Concrete Corresponding to Space and Bond Length(2013)3 cited
• 아라미드섬유와 유리섬유로 혼합된 하이브리드 FRP 플레이트로 보강된 RC 보의 휨 보강 성능(2012)
• 부착길이와 복부정착이 CFRP판으로 보강된 RC 보의 휨 보강효과에 미치는 영향(2002)
• → Evaluation of Static and Fatigue Performances of Decks Reinforced with GFRP Rebar for Reinfocement Ratio(2014)
• FRP 보강 낙엽송 소경각재 적층재의 휨 강도 성능 평가(2018)