Surface Roughness Measurement of 3D-Printed 316L Stainless Steel Surface using Terahertz Time-Domain Spectroscopy
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Published version
Embargoed until: 5555-01-01
Embargoed until: 5555-01-01
Volume
2022-January
Publisher
DOI
10.1109/IRMMW-THz50927.2022.9920607
ISSN
2162-2027
Metadata
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The ultra-rough surface of the 3D-printed metal produced by laser powder bed fusion technique is one of the major challenges faced in commercializing 3D-printed metallic components in a wider context. The electrochemical polishing method is currently considered a promising method to overcome this obstacle. However, evaluating the average roughness of a 3D printed surface before and after polishing with the current state-of-The-Art laser scanning microscopy suffers incomplete datasets due to highly scattered signals. Here we successfully evaluate the rms roughness of the metallic surfaces with different roughness levels using terahertz time-domain spectroscopy (THz-TDS) for comparison against roughness values acquired using a commercial laser scanning microscope.