Inspection of additive manufactured parts using laser ultrasonics

From National Research Council Canada

DOIResolve DOI: https://doi.org/10.1063/1.4940606
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Name affiliation
  1. National Research Council of Canada. Energy, Mining and Environment
  2. National Research Council of Canada. Aerospace
FormatText, Article
Proceedings title42nd Annual Review of Progress in Quantitative Nondestructive Evaluation: incorporating the 6th European-American Workshop on Reliability of NDE
Series titleAIP Conference Proceedings; no. 1706
Conference42nd Annual Review of Progress in Quantitative Nondestructive Evaluation: Incorporating the 6th European-American Workshop on Reliability of NDE, 26–31 July 2015, Minneapolis, Minnesota, USA
ISSN0094-243X
1551-7616
ISBN978-0-7354-1353-5
Article number130003
Abstract
Additive manufacturing is a novel technology of high importance for global sustainability of resources. As additive manufacturing involves typically layer-by-layer fusion of the feedstock (wire or powder), an important characteristic of the fabricated metallic structural parts, such as those used in aero-engines, is the performance, which is highly related to the presence of defects, such as cracks, lack of fusion or bonding between layers, and porosity. For this purpose, laser ultrasonics is very attractive due to its non-contact nature and is especially suited for the analysis of parts of complex geometries. In addition, the technique is well adapted to online implementation and real-time measurement during the manufacturing process. The inspection can be performed from either the top deposited layer or the underside of the substrate and the defects can be visualized using laser ultrasonics combined with the synthetic aperture focusing technique (SAFT). In this work, a variety of results obtained off-line on INCONEL® 718 and Ti-6Al-4V coupons that were manufactured using laser powder, laser wire, or electron beam wire deposition are reported and most defects detected were further confirmed by X-ray micro-computed tomography.
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LanguageEnglish
Peer reviewedYes
NPARC number23001537
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Record created2017-03-02
Record modified2020-03-16
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