Simulation-guided variable laser power design for melt pool depth control in directed energy deposition

S Liao, S Webster, D Huang, R Council, K Ehmann… - Additive …, 2022 - Elsevier
Melt pool control is essential in metal additive manufacturing processes since the melt pool
geometry directly affects the geometric accuracy and material properties of the fabricated …

[HTML][HTML] Effects of the thermal history on the microstructural and the mechanical properties of stainless steel 316L parts produced by wire-based laser metal deposition

C Bernauer, ME Sigl, S Grabmann, T Merk… - Materials Science and …, 2024 - Elsevier
Laser metal deposition with coaxial wire feeding is a novel technology for additively
manufacturing near-net-shape metal parts, as well as for repairing and modifying existing …

Controls and process planning strategies for 5-axis laser directed energy deposition of Ti-6Al-4V using an 8-axis industrial robot and rotary motion

BT Gibson, P Mhatre, MC Borish, CE Atkins… - Additive …, 2022 - Elsevier
Interest in multi-axis additive manufacturing has grown significantly in recent years due to
associated benefits that range from improved quality to support for greater geometric …

[HTML][HTML] Segmentation-based closed-loop layer height control for enhancing stability and dimensional accuracy in wire-based laser metal deposition

C Bernauer, P Leitner, A Zapata, P Garkusha… - Robotics and Computer …, 2024 - Elsevier
Laser metal deposition (LMD) with wire is a versatile additive manufacturing process used
for the production of near-net-shape metal components as well as for modification and repair …

Enhancing productivity and efficiency in conventional laser metal deposition process for Inconel 718–Part II: advancing the process performance

S Maffia, F Chiappini, G Maggiani, V Furlan… - … International Journal of …, 2023 - Springer
This paper is the second part of a work focused on optimizing the performance of
conventional Laser Metal Deposition (C-LMD) process for Inconel 718 (IN718). In Part I …

[HTML][HTML] A model-based approach to reduce kinematics-related overfill in robot-guided laser directed energy deposition

A Zapata, A Benda, M Spreitler, XF Zhao… - CIRP Journal of …, 2023 - Elsevier
Abstract Laser Directed Energy Deposition is an Additive Manufacturing process, which
combines the advantages of a high precision and a high deposition rate. Nevertheless, the …

[HTML][HTML] Toward defect-free components in laser metal deposition with coaxial wire feeding through closed-loop control of the melt pool temperature

C Bernauer, A Zapata, MF Zaeh - Journal of Laser Applications, 2022 - pubs.aip.org
Laser metal deposition (LMD) is an additive manufacturing process in which a metal powder
or wire is added to a laser-induced molten pool. This localized deposition of material is used …

2000W Blue laser directed energy deposition of AlSi7Mg: process parameters, molten pool characteristics, and appearance defects

Z Tang, Q Wei, Z Gao, H Yang, A Wang… - Virtual and Physical …, 2023 - Taylor & Francis
Aluminium alloys are difficult to be manufactured by directed energy deposition (DED) with
the widely used infrared laser because of the low absorptivity. A blue laser with a 450 nm …

[HTML][HTML] Coaxial and synchronous monitoring of molten pool height, area, and temperature in laser metal deposition

S Maffia, V Furlan, B Previtali - Optics & Laser Technology, 2023 - Elsevier
Abstract Laser Metal Deposition is an additive manufacturing technology that enables to
realize of one-of-a-kind large components with a free-form geometry. However, the …

[HTML][HTML] Powder catchment efficiency in laser cladding (directed energy deposition). An investigation into standard laser cladding and the ABA cladding technique

D Koti, J Powell, H Naesstroem… - Journal of laser …, 2023 - pubs.aip.org
This paper investigates the efficiency of powder catchment in blown powder laser cladding
(a directed energy deposition technique). A comparison is made between standard “track by …