Directed energy deposition (DED) additive manufacturing: Physical characteristics, defects, challenges and applications

D Svetlizky, M Das, B Zheng, AL Vyatskikh, S Bose… - Materials Today, 2021 - Elsevier
Directed energy deposition (DED) is a branch of additive manufacturing (AM) processes in
which a feedstock material in the form of powder or wire is delivered to a substrate on which …

Laser-based directed energy deposition (DED-LB) of advanced materials

D Svetlizky, B Zheng, A Vyatskikh, M Das… - Materials Science and …, 2022 - Elsevier
Directed energy deposition (DED) has matured into an essential additive manufacturing
(AM) branch. DED has been broadly implemented in the design and fabrication of novel …

In-situ monitoring of sub-surface and internal defects in additive manufacturing: A review

Y AbouelNour, N Gupta - Materials & Design, 2022 - Elsevier
Abstract Additive Manufacturing (AM), or 3D printing, processes depend on a user-defined
set of optimized process parameters to create a component. Monitoring and control of AM …

[HTML][HTML] Review of in-situ process monitoring and in-situ metrology for metal additive manufacturing

SK Everton, M Hirsch, P Stravroulakis, RK Leach… - Materials & Design, 2016 - Elsevier
Lack of assurance of quality with additively manufactured (AM) parts is a key technological
barrier that prevents manufacturers from adopting AM technologies, especially for high …

Directed energy deposition of metals: processing, microstructures, and mechanical properties

SH Li, P Kumar, S Chandra… - International Materials …, 2023 - journals.sagepub.com
Amongst the many additive manufacturing (AM) techniques, directed energy deposition
(DED) is a prominent one, which can also be used for the repair of damaged components. In …

Extraction and evaluation of melt pool, plume and spatter information for powder-bed fusion AM process monitoring

Y Zhang, GS Hong, D Ye, K Zhu, JYH Fuh - Materials & Design, 2018 - Elsevier
With the continuous development of additive manufacturing technique, the issue on built
quality has caught increasing attentions. To improve the quality of built parts, the process …

A review on in situ monitoring technology for directed energy deposition of metals

Z Tang, W Liu, Y Wang, KM Saleheen, Z Liu… - … International Journal of …, 2020 - Springer
Directed energy deposition (DED) is an important additive manufacturing method for
producing or repairing high-end and high-value equipment. Meanwhile, the lack of reliable …

Multisensor fusion-based digital twin for localized quality prediction in robotic laser-directed energy deposition

L Chen, G Bi, X Yao, C Tan, J Su, NPH Ng… - Robotics and Computer …, 2023 - Elsevier
Early detection of defects, such as keyhole pores and cracks is crucial in laser-directed
energy deposition (L-DED) additive manufacturing (AM) to prevent build failures. However …

In situ investigation into temperature evolution and heat generation during additive friction stir deposition: A comparative study of Cu and Al-Mg-Si

D Garcia, WD Hartley, HA Rauch, RJ Griffiths… - Additive …, 2020 - Elsevier
Additive friction stir deposition is an emerging solid-state additive manufacturing technology
that enables site-specific build-up of high-quality metals with fine, equiaxed microstructures …

In-situ monitoring of laser-based PBF via off-axis vision and image processing approaches

Y Zhang, JYH Fuh, D Ye, GS Hong - Additive Manufacturing, 2019 - Elsevier
With the development of powder bed fusion (PBF) additive manufacturing technique for
functional parts production, process monitoring and diagnosis is highly demanded to ensure …