Results 41 to 50 of about 694,148 (329)

The state-of-the-art of wire arc directed energy deposition (WA-DED) as an additive manufacturing process for large metallic component manufacture

International journal of computer integrated manufacturing (Print), 2023
Wire Arc Directed Energy Deposition (WA-DED) also known as Wire Arc Additive Manufacture (WAAM) is a niche additive manufacturing technique for metals that is increasingly offering a competitive advantage to traditional forging and casting methods ...
Sam C.A. Costello, C. Cunningham, Fang Xu, A. Shokrani, V. Dhokia, S. Newman   +5 more
semanticscholar   +1 more source

Effect of Interlayer Composition on the Properties of Laser-Directed-Energy-Deposition-Based Additively Manufactured Copper-Stainless Steel Wall Structures [PDF]

Laser-directed energy deposition (LDED) is one of the advanced techniques used for the sustainable manufacturing of engineering components with minimal material wastage and higher performance.
Dixit, S K, Jinoop, Arackal Naraynan, Paul, C P, Rai, AK, Yadav, S   +4 more
core   +2 more sources

Ideal magnetohydrodynamic simulations of unmagnetized dense plasma jet injection into a hot strongly magnetized plasma

, 2011
We present results from three-dimensional ideal magnetohydrodynamic simulations of unmagnetized dense plasma jet injection into a uniform hot strongly magnetized plasma, with the aim of providing insight into core fueling of a tokamak with parameters ...
Arseniev, Bengtsson, Castel, Cheifetz, Goodin, H. Jin, Hamilton, Hara, Hara, Hotchkis, Hua, Hwang, Lhersonneau, Li, Luo, Möller, Nilsson, Orlandi, Rodriguez-Guzman, S.-Y. Yu, Sheihk, Sheikh, Sheikh, Sheline, Shizuma, Sieja, Skalski, Smith, Stephens, Sun, Urban, Urban, Velazquez, Verma, Wood, Wu, X.-H. Zhou, Y. Sun, Y.-C. Yang, Y.-H. Zhang, Y.-X. Liu, Yang, Yeoh   +42 more
core   +1 more source

Powder flow and deposition profile in directed energy deposition with discrete coaxial injection [PDF]

EPJ Web of Conferences
This study explores the effects of powder injection angle and substrate inclination on powder flow characteristics and deposition profiles in Directed Energy Deposition (DED) using a discrete coaxial nozzle.
Nugroho Aji, Hsiau Shu-San, Sheng Li-Tsung, Wang Bing-Zhi, Yasa Utama Firman, Riandadari Dyah   +5 more
doaj   +1 more source

Collapsars - Gamma-Ray Bursts and Explosions in "Failed Supernovae" [PDF]

, 1998
Using a two-dimensional hydrodynamics code (PROMETHEUS), we study the continued evolution of rotating massive helium stars whose iron core collapse does not produce a successful outgoing shock, but instead forms a black hole.
A. I. MacFadyen, Arnett W. D., Arnett W. D., Blandford R. D., Colgate S. A., Hoyle F., Itoh N., Janka H.-Th., Janka H.-Th., Jaroszynski M., Langer N., Paczynski B., Rees M. J., Ruffert M., S. E. Woosley, Shakura N. I.   +15 more
core   +2 more sources

Peptide‐based ligand antagonists block a Vibrio cholerae adhesin

FEBS Letters, EarlyView.
The structure of a peptide‐binding domain of the Vibrio cholerae adhesin FrhA was solved by X‐ray crystallography, revealing how the inhibitory peptide AGYTD binds tightly at its Ca2+‐coordinated pocket. Structure‐guided design incorporating D‐amino acids enhanced binding affinity, providing a foundation for developing anti‐adhesion therapeutics ...
Mingyu Wang, Grace Du, Charity Yongo‐Luwawa, Angelina Lu, Brett Kinrade, Kim Munro, Karl E. Klose, William D. Lubell, Peter Davies, Shuaiqi Guo   +9 more
wiley   +1 more source

In-process spectroscopic detection of chromium loss during Directed Energy Deposition of alloy 718

Materials & Design, 2020
In this work, a fast optical spectrometer was used to monitor the Directed Energy Deposition (DED) process, during the deposition of Alloy 718 samples with different laser power, thus different energy inputs into the material.
Agnieszka Kisielewicz, Esmaeil Sadeghi, Fredrik Sikström, Anna-Karin Christiansson, Gianfranco Palumbo, Antonio Ancona   +5 more
doaj   +1 more source

On the microstructure of thin films grown by an isotropically directed deposition flux [PDF]

, 2010
The influence of isotropically directed deposition flux on the formation of the thin film microstructure at low temperatures is studied. For this purpose we have deposited TiO2 thin films by two different deposition techniques: reactive magnetron ...
Cotrino Bautista, José, Gil Rostra, Jorge, Palmero Acebedo, Alberto, Rodríguez González-Elipe, Agustín, Romero Gómez, Pablo, Yubero Valencia, Francisco, Álvarez Molina, Rafael   +6 more
core   +1 more source

Partitioning of laser energy during directed energy deposition

Additive Manufacturing, 2017
Abstract An energy balance that describes the transfer of energy is proposed for the laser-based directed energy deposition process. The partitioning of laser energy was experimentally measured and accurately validated using a special process calorimeter for Ti-6Al-4V and Inconel 625™ alloys. The total energy provided by the laser was partitioned as:
Frederick Lia, Joshua Park, Jay Tressler, Richard Martukanitz   +3 more
openaire   +1 more source

Mechanisms of parasite‐mediated disruption of brain vessels

FEBS Letters, EarlyView.
Parasites can affect the blood vessels of the brain, often causing serious neurological problems. This review explains how different parasites interact with and disrupt these vessels, what this means for brain health, and why these processes matter. Understanding these mechanisms may help us develop better ways to prevent or treat brain infections in ...
Leonor Loira, Sílvia Arroz‐Madeira, Cláudio A. Franco, Sara Silva Pereira   +3 more
wiley   +1 more source