• Dickins, Andrew
• Leach, Richard
• Lawes, Simon
• Thompson, Adam
• Senin, Nicola
• Sims-Waterhouse, Danny
• Widjanarko, Taufiq

Abstract

<jats:p>Metal powder bed fusion (PBF) methods need in-process measurement methods to increase user confidence and encourage further adoption in high-value manufacturing sectors. In this paper, a novel measurement method for PBF systems is proposed that uses multi-view fringe projection to acquire high-resolution surface topography information of the powder bed. Measurements were made using a mock-up of a commercial PBF system to assess the system’s accuracy and precision in comparison to conventional single-view fringe projection techniques for the same application. Results show that the multi-view system is more accurate, but less precise, than single-view fringe projection on a point-by-point basis. The multi-view system also achieves a high degree of surface coverage by using alternate views to access areas not measured by a single camera.</jats:p>

Topics

• impedance spectroscopy
• surface
• laser emission spectroscopy
• powder bed fusion