About this Abstract |
Meeting |
2023 TMS Annual Meeting & Exhibition
|
Symposium
|
Aluminum Alloys, Characterization and Processing
|
Presentation Title |
Quality Assessment and Features of Microdrilled Holes in Aluminum Alloy Using Ultrafast Laser |
Author(s) |
Suman Chatterjee, Abhijit S Cholkar, David Kinahan, Dermot Brabazon |
On-Site Speaker (Planned) |
Abhijit S Cholkar |
Abstract Scope |
In this work, we present the use of a low power femtosecond laser system for the microdrilling of aluminum alloys. Hole sizes of 20 m were fabricated in arrays with sub-micron level precision in terms of diameter and hole location. The Design of Experiment approach was employed to analyse the influences of the laser power, frequency, and exposure time on the resulting quality of the produced micro-holes. The outputs measured were hole size, location and the variability in these measures. The metallurgical and geometrical features were examined using SEM, confocal microscope and laser surface profilometry. Processing throughput is also importance in industrial laser processes. The use of scanning optics and spatial light modulation (SLM) were examined as means towards developing a rapid and scalable ultrafast laser process. The timeframe for conventional galvanometer processing versus SLM processing were compared for different geometric array pattern (number and geometric arrangement of holes) production. |
Proceedings Inclusion? |
Planned: Light Metals |
Keywords |
Aluminum, Characterization, Process Technology |