Comparative analysis of drills for composite laminates

• Type: Article in International Scientific Journal
• Date: 2012

Authors

Durao, LMP (Author) Other; Goncalves, DJS (Author) Other; João Manuel R. S. Tavares (Author) FEUP; de Albuquerque, VHC (Author) Other; António Torres Marques (Author) FEUP

Journal

Title: Journal of Composite Materials

Vol. 46 No. 14

Pages: 1649-1659

ISSN: 0021-9983

Publisher: SAGE

Indexing

ISI Web of Knowledge - 20 Citations

Scopus - 29 Citations

Other information

Authenticus ID: P-002-8DM

DOI: 10.1177/0021998311421690

Abstract (EN): The characteristics of carbon fiber-reinforced plastics allow a very broad range of uses. Drilling is often necessary to assemble different components, but this can lead to various forms of damage, such as delamination which is the most severe. However, a reduced thrust force can decrease the risk of delamination. In this work, two variables of the drilling process were compared: tool material and geometry, as well as the effect of feed rate and cutting speed. The parameters that were analyzed include: thrust force, delamination extension and mechanical strength through open-hole tensile test, bearing test, and flexural test on drilled plates. The present work shows that a proper combination of all the factors involved in drilling operations, like tool material, tool geometry and cutting parameters, such as feed rate or cutting speed, can lead to the reduction of delamination damage and, consequently, to the enhancement of the mechanical properties of laminated parts in complex structures, evaluated by open-hole, bearing, or flexural tests.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 11