Abstract
The quality control of additive manufacturing (AM) parts and the repeatability of AM process are critical issues for the widespread of AM especially for aerospace and healthcare sectors. Due to production costs, there is a strong interest in reducing scrap rates and process monitoring. Laser ultrasonics is a promising technology that fits the constraints of AM online monitoring. This technique shows potential for inspecting the upper cord of the part during manufacturing, as it is a non-contact and nondestructive testing. The generation is produced by a brief laser impulse which heats up the material, inducing constraints that release into ultrasonic waves. Two generation modes can be encountered using lasers: thermoelastic and ablative, depending on the energy deposited on the surface. The generated waves interact with the medium and flaws, thus allowing the detection of defects such as lack of fusion or porosities. The detection is performed using a two-wave mixing interferometer, also contactless. In this paper, we present work carried out in order to evaluate the feasibility and the effectiveness of laser ultrasonics testing for online additive manufacturing process. The influence of key parameters such as laser spot dimensions is highlighted through both experiment and modeling. We present first results obtained on additive manufactured parts containing machined notches.
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References
Gibson I, Rosen D, Stucker B (2015) Additive Manufacturing Technologies. Springer New York, New York, NY
J. M. Waller, B. H. Parker, K. L. Hodges, E. R. Burke, et J. L. Walker, (2014)Nondestructive evaluation of additive manufacturing state-of-the-discipline report,
Tapia G, Elwany A (2014) A review on process monitoring and control in metal-based additive manufacturing. J. Manuf. Sci. Eng 136(6):060801
B. M. Sharratt, (2015)Non-destructive techniques and technologies for qualification of additive manufactured parts and processes,
CERNIGLIA D, SCAFIDI M, PANTANO A, LOPATKA R (2013) Laser ultrasonic technique for laser powder deposition inspection. Laser 6(150):13
Blouin A, Delaye P, Monchalin J-P, Roosen G (2001) Détection d’ultrasons par interférométrie adaptative dans des cristaux photoréfractifs. Instrum Mes Métrologie 1:127–141
Xu X, Mi G, Luo Y, Jiang P, Shao X, Wang C (2017) Morphologies, microstructures, and mechanical properties of samples produced using laser metal deposition with 316L stainless steel wire. Opt. Lasers Eng 94:1–11, juill
Militzer M, Garcin T, Poole WJ (2013) Measurements of grain growth and recrystallization by laser ultrasonics. Mater. Sci. Forum 753:25–30, mars
Dong F, Wang X, Yang Q, Yin A, Xu X (2017) Directional dependence of aluminum grain size measurement by laser-ultrasonic technique. Mater. Charact 129:114–120, juill
A. Longuet, C. Colin, P. Peyre, S. Quilici, et G. Cailletaud, (2006)Modélisation de la fabrication directe de pièces par projection laser: application au Ti-6Al-4V, in Matériaux 2006, p. 11–p
Ruipeng G, Haitao W, Jianyan Z (2017) Non-contact detection of low carbon steel using laser generated ultrasound at high temperature. Opt. - Int. J. Light Electron Opt 136:536–542, mai
Mi B, Ume C (2006) Real-time weld penetration depth monitoring with laser ultrasonic sensing system. J. Manuf. Sci. Eng. 128(1):280
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This article is part of the collection Welding, Additive Manufacturing and Associated NDT
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Millon, C., Vanhoye, A., Obaton, AF. et al. Development of laser ultrasonics inspection for online monitoring of additive manufacturing. Weld World 62, 653–661 (2018). https://doi.org/10.1007/s40194-018-0567-9
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DOI: https://doi.org/10.1007/s40194-018-0567-9