Next Article in Journal
Kinematically Coupled Force Compensation—Experimental Results and Advanced Design for the 1D-Implementation
Next Article in Special Issue
Interplay of Process Variables in Magnetic Abrasive Finishing of AISI 1018 Steel Using SiC and Al2O3 Abrasives
Previous Article in Journal
A Semianalytical Model for the Determination of Bistability and Curvature of Metallic Cylindrical Shells
Previous Article in Special Issue
Investigations on Material Loads during Grinding by Speckle Photography
Open AccessArticle

Chip Morphology and Delamination Characterization for Vibration-Assisted Drilling of Carbon Fiber-Reinforced Polymer

1
Department of Mechanical Engineering, McMaster University, Hamilton, ON L8S 4L7, Canada
2
Aerospace Manufacturing Technology Centre, National Research Council Canada, Montreal, QC H3T 2B2, Canada
*
Author to whom correspondence should be addressed.
J. Manuf. Mater. Process. 2019, 3(1), 23; https://doi.org/10.3390/jmmp3010023
Received: 15 February 2019 / Revised: 28 February 2019 / Accepted: 7 March 2019 / Published: 12 March 2019
(This article belongs to the Special Issue Surface Integrity in Machining)
Carbon fiber-reinforced polymers (CFRP) are widely used in the aerospace industry. A new generation of aircraft is being built using CFRP for up to 50% of their total weight, to achieve higher performance. Exit delamination and surface integrity are significant challenges reported during conventional drilling. Exit delamination influences the mechanical properties of machined parts and, consequently, reduces fatigue life. Vibration-assisted drilling (VAD) has much potential to overcome these challenges. This study is aimed at investigating exit delamination and geometrical accuracy during VAD at both low- and high-frequency ranges. The kinematics of VAD are used to investigate the relationship between the input parameters (cutting speed, feed, vibration frequency, and amplitude) and the uncut chip thickness. Exit delamination and geometrical accuracy are then evaluated in terms of mechanical and thermal load. The results show a 31% reduction in cutting temperature, as well as a significant enhancement in exit delamination, by using the VAD technology. View Full-Text
Keywords: low-frequency vibration-assisted drilling; high-frequency vibration-assisted drilling; multi-directional carbon fiber-reinforced polymer laminates; advanced machining; delamination free low-frequency vibration-assisted drilling; high-frequency vibration-assisted drilling; multi-directional carbon fiber-reinforced polymer laminates; advanced machining; delamination free
Show Figures

Figure 1

MDPI and ACS Style

Hussein, R.; Sadek, A.; Elbestawi, M.A.; Attia, M.H. Chip Morphology and Delamination Characterization for Vibration-Assisted Drilling of Carbon Fiber-Reinforced Polymer. J. Manuf. Mater. Process. 2019, 3, 23.

Show more citation formats Show less citations formats
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Article Access Map by Country/Region

1
Back to TopTop