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https://doi.org/10.15480/882.2422
Publisher DOI: | 10.1016/j.phpro.2014.08.100 | Title: | Low coherence interferometry in selective laser melting | Language: | English | Authors: | Neef, Arne Seyda, Vanessa Herzog, Dirk Emmelmann, Claus Schönleber, Martin Kogel-Hollacher, Markus |
Keywords: | Laser beam melting (LBM); Low Coherence Interferometry (LCI); MEGaFiT; Process monitoring; Selective laser melting (SLM) | Issue Date: | 2014 | Publisher: | Elsevier | Source: | Physics Procedia C (56): 82-89 (2014-01-01) | Abstract (english): | © 2014 The Authors. Published by Elsevier B.V. Selective Laser Melting (SLM) is an additive layer manufacturing technology that offers several advantages compared to conventional methods of production such as an increased freedom of design and a toolless production suited for variable lot sizes. Despite these attractive aspects today's state of the art SLM machines lack a holistic process monitoring system that detects and records typical defects during production. A novel sensor concept based on the low coherence interferometry (LCI) was integrated into an SLM production setup. The sensor is mounted coaxially to the processing laser beam and is capable of sampling distances along the optical axis. Measurements during and between the processing of powder layers can reveal crucial topology information which is closely related to the final part quality. The overall potential of the sensor in terms of quality assurance and process control is being discussed. Furthermore fundamental experiments were performed to derive the performance of the system. |
Conference: | 8th International Conference on Photonic Technologies LANE 2014 | URI: | http://hdl.handle.net/11420/3507 | DOI: | 10.15480/882.2422 | ISSN: | 1875-3892 | Journal: | Physics procedia | Institute: | Laser- und Anlagensystemtechnik G-2 | Document Type: | Article | Project: | Manufacturing Error-free Goods at First Time | License: | ![]() |
Appears in Collections: | Publications with fulltext |
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