Coherence scanning interferometry for additive manufacture

Gomez, Carlos; Thompson, Adam; DiSciacca, Jack; Lawes, Simon; Leach, Richard

Abstract

Additive manufacture (AM) of metal components is a rapidly maturing technology; but given the large number of interrelated process parameters, it remains difficult to control to high precision. It has been observed that processing conditions may be associated with specific features in the surface texture [1], creating a drive to achieve fast, and reliable topographic measurement of metal AM surfaces. One of the most developed metal AM processes, selective laser melting (SLM), still produces parts that exhibit rough surface textures with dense distributions of features at a wide range of lateral and vertical scales, aspect ratios, and reflective properties; with the additional complication of the presence of high slopes, undercuts and surface recesses. These features make metal AM surfaces challenging to measure by both tactile and optical means [2,3].

Citation

Gomez, C., Thompson, A., DiSciacca, J., Lawes, S., & Leach, R. Coherence scanning interferometry for additive manufacture. Presented at 16th Conference on Metrology and properties of Engineering Surfaces

• Conference Name: 16th Conference on Metrology and properties of Engineering Surfaces
• End Date: Jun 29, 2017
• Acceptance Date: May 22, 2017
• Publication Date: Jun 27, 2017
• Deposit Date: Jul 6, 2017
• Publicly Available Date: Jul 6, 2017
• Peer Reviewed: Peer Reviewed
• Keywords: Coherence scanning interferometry, additive manufacturing, surface topography, roughness, metrology
• Public URL: https://nottingham-repository.worktribe.com/output/868132
• Related Public URLs: http://www.metprops2017.se
• Contract Date: Jul 6, 2017