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Proceedings Paper

Measuring residual stresses in metallic components manufactured with fibre Bragg gratings embedded by selective laser melting
Author(s): Dirk Havermann; Jinesh Mathew; William N. MacPherson; Duncan P. Hand; Robert R. J. Maier
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Paper Abstract

Metal clad single mode optical fibres containing Fibre Bragg Gratings are embedded in stainless steel components using bespoke laser based Selective Laser Melting technology (SLM). Significant residual stresses can be created in SLM manufactured components through the strong thermal gradients during the build process. We demonstrate the ability to monitor these internal stresses through embedded optical fibres with FBGs on a layer to layer basis, confirming estimates from models for residual stresses in additive manufactured components.

Paper Details

Date Published: 28 September 2015
PDF: 4 pages
Proc. SPIE 9634, 24th International Conference on Optical Fibre Sensors, 96340T (28 September 2015); doi: 10.1117/12.2194352
Show Author Affiliations
Dirk Havermann, Heriot-Watt Univ. (United Kingdom)
Jinesh Mathew, Heriot-Watt Univ. (United Kingdom)
William N. MacPherson, Heriot-Watt Univ. (United Kingdom)
Duncan P. Hand, Heriot-Watt Univ. (United Kingdom)
Robert R. J. Maier, Heriot-Watt Univ. (United Kingdom)

Published in SPIE Proceedings Vol. 9634:
24th International Conference on Optical Fibre Sensors
Hypolito José Kalinowski; José Luís Fabris; Wojtek J. Bock, Editor(s)

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