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Using Laser Ultrasound to Detect Subsurface Defects in Metal Laser Powder Bed Fusion Components

Laser powder bed fusion offers many advantages over conventional manufacturing methods, such as the integration of multiple parts that can result in significant weight-savings. The increased design freedom that layer-wise manufacture allows has also been seen to enhance component performance at litt...

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Detalles Bibliográficos
Autores principales: Everton, Sarah, Dickens, Phill, Tuck, Chris, Dutton, Ben
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Springer US 2017
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6954014/
https://www.ncbi.nlm.nih.gov/pubmed/31983866
http://dx.doi.org/10.1007/s11837-017-2661-7
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author Everton, Sarah
Dickens, Phill
Tuck, Chris
Dutton, Ben
author_facet Everton, Sarah
Dickens, Phill
Tuck, Chris
Dutton, Ben
author_sort Everton, Sarah
collection PubMed
description Laser powder bed fusion offers many advantages over conventional manufacturing methods, such as the integration of multiple parts that can result in significant weight-savings. The increased design freedom that layer-wise manufacture allows has also been seen to enhance component performance at little or no added cost. For such benefits to be realized, however, the material quality must first be assured. Laser ultrasonic testing is a noncontact inspection technique that has been proposed as suitable for in situ monitoring of metal additive manufacturing processes. This article explores the current capability of this technique to detect manufactured, subsurface defects in Ti-6Al-4V samples, ex situ. The results are compared with x-ray computed tomography reconstructions and focus variation microscopy. Although laser ultrasound has been used to identify material discontinuities, further work is required before this technique could be implemented in situ. ELECTRONIC SUPPLEMENTARY MATERIAL: The online version of this article (10.1007/s11837-017-2661-7) contains supplementary material, which is available to authorized users.
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spelling pubmed-69540142020-01-23 Using Laser Ultrasound to Detect Subsurface Defects in Metal Laser Powder Bed Fusion Components Everton, Sarah Dickens, Phill Tuck, Chris Dutton, Ben JOM (1989) Solid Freeform Fabrication Laser powder bed fusion offers many advantages over conventional manufacturing methods, such as the integration of multiple parts that can result in significant weight-savings. The increased design freedom that layer-wise manufacture allows has also been seen to enhance component performance at little or no added cost. For such benefits to be realized, however, the material quality must first be assured. Laser ultrasonic testing is a noncontact inspection technique that has been proposed as suitable for in situ monitoring of metal additive manufacturing processes. This article explores the current capability of this technique to detect manufactured, subsurface defects in Ti-6Al-4V samples, ex situ. The results are compared with x-ray computed tomography reconstructions and focus variation microscopy. Although laser ultrasound has been used to identify material discontinuities, further work is required before this technique could be implemented in situ. ELECTRONIC SUPPLEMENTARY MATERIAL: The online version of this article (10.1007/s11837-017-2661-7) contains supplementary material, which is available to authorized users. Springer US 2017-11-16 2018 /pmc/articles/PMC6954014/ /pubmed/31983866 http://dx.doi.org/10.1007/s11837-017-2661-7 Text en © The Author(s) 2017 Open AccessThis article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made.
spellingShingle Solid Freeform Fabrication
Everton, Sarah
Dickens, Phill
Tuck, Chris
Dutton, Ben
Using Laser Ultrasound to Detect Subsurface Defects in Metal Laser Powder Bed Fusion Components
title Using Laser Ultrasound to Detect Subsurface Defects in Metal Laser Powder Bed Fusion Components
title_full Using Laser Ultrasound to Detect Subsurface Defects in Metal Laser Powder Bed Fusion Components
title_fullStr Using Laser Ultrasound to Detect Subsurface Defects in Metal Laser Powder Bed Fusion Components
title_full_unstemmed Using Laser Ultrasound to Detect Subsurface Defects in Metal Laser Powder Bed Fusion Components
title_short Using Laser Ultrasound to Detect Subsurface Defects in Metal Laser Powder Bed Fusion Components
title_sort using laser ultrasound to detect subsurface defects in metal laser powder bed fusion components
topic Solid Freeform Fabrication
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6954014/
https://www.ncbi.nlm.nih.gov/pubmed/31983866
http://dx.doi.org/10.1007/s11837-017-2661-7
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