Quality Assessment and Features of Microdrilled Holes in Aluminum Alloy Using Ultrafast Laser

In this work, we present the use of an ultrafast laserLaser system for the high aspect ratio micro-drilling of aluminum alloyAluminum alloys thin foils. Hole sizes in between 20 and 40 μm were fabricated in arrays with sub-micron level precision in terms of diameter and hole location. The Design of ExperimentDesign of experiment approach was employed to analyze the influences of the laserLaser process parametersProcess parameters like laserLaser 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 a scanning electron microscope and optical microscope. ProcessingProcessing throughput is also important in industrial laserLaser processes. The parametric effect on circularityCircularity and taperTaper has been observed to understand the features of the hole. The features of holes help in fabrication in a plethora of industries to produce applications such as fins, filters, microgrid circuits, and biomedical devices.