According to the authors, “impulse impact accelerates the generation and propagation of tiny cracks in the workpiece material, which reduces the binding force inside the grains of the material.” Although this may be significant in reducing and eliminating the size effect in micro-milling, an in-depth analysis will be necessary for future work.
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However, the compressive forces due to the ductile mode of material removal presented an increasing trend with random fluctuations of the cutting force, leading to higher tool wear.
This highly significant area for micro-milling application in the microfluidics industry is in functionally optimized surfaces through patterned microstructures on miniaturized bioreactor components, also known as “lab-on-a-chip”, as shown in Fig. 18 .