Results 31 to 40 of about 588,717 (296)

Multi-scale simulation of dendrite growth for direct energy deposition of nickel-based superalloys

Materials & Design, 2019
In this study, a multi-scale model that integrates a macro-scale transient three-dimensional mass and heat transfer model and a micro-scale thin-interface phase-field model is developed to simulate the solidification behavior of the molten pool and the ...
Wenjia Xiao, Simeng Li, Cunshan Wang, Yan Shi, Jyotirmoy Mazumder, Hui Xing, Lijun Song   +6 more
doaj   +1 more source

Scanning Tunnelling Spectroscopic Studies of Dirac Fermions in Graphene and Topological Insulators [PDF]

, 2012
We report novel properties derived from scanning tunnelling spectroscopic (STS) studies of Dirac fermions in graphene and the surface state (SS) of a strong topological insulator (STI), Bi_2Se_3.
Bockrath, M. W., Boyd, D. A., Chu, H., He, L., Teague, M. L., Wang, K.-L., Wu, R. T.-P., Xiu, F.-X., Yeh, N.-C.   +8 more
core   +2 more sources

Process Development to Repair Aluminum Components, Using EHLA and Laser-Powder DED Techniques

Journal of Manufacturing and Materials Processing
The article presents a new AM (Additive Manufacturing) process development, necessary to repair parts made from Aluminum 6061 material, with T6 treatment. The laser Directed Energy Deposition (DED) and Extreme High-Speed Directed Energy Deposition (EHLA)
Adrienn Matis, Min-Uh Ko, Richard Kraft, Nicolae Balc   +3 more
doaj   +1 more source

Kinetics and Intermediate Phases in Epitaxial Growth of Fe3O4 Films from Deposition and Thermal Reduction

, 2016
We have studied the growth of Fe3O4 (111) epitaxial films on Al2O3 (001) substrates using a pulsed laser deposition / thermal reduction cycle using an {\alpha}-Fe2O3 target.
Xu, Xiaoshan, Yang, Sen, Yang, Zhimao, Zhang, Xiaozhe   +3 more
core   +1 more source

Demonstration and Comparison of Operation of Photomultiplier Tubes at Liquid Argon Temperature

, 2011
Liquified noble gases are widely used as a target in direct Dark Matter searches. Signals from scintillation in the liquid, following energy deposition from the recoil nuclei scattered by Dark Matter particles (e.g.
, A G Cocco, A M Szelc, A Triossi, A Zani, C Galbiati, C Montanari, C Rubbia, C Vignoli, C. Bauer ., E Segreto, E. Nichelatti ., Electron Tube Ltd., F Boffelli, F Cavanna, F Di Pompeo, F Perfetto, F Pietropaolo, G B Piano Mortari, G Fiorillo, G L Raselli, G Meng, L Grandi, L Pandola, M Antonello, M Cambiaghi, N Canci, N Deniskina, O Palamara, P Kryczynski, R Acciarri, S Ventura, T. Doke, T. Heindl ., WArP collaboration, WArP collaboration, WArP collaboration   +36 more
core   +1 more source

Rule-Based Path Identification for Direct Energy Deposition

Procedia Manufacturing, 2020
23rd International Conference on Material ...
Sefidi, Moein P., Israr, Rameez, Buhl, Johannes, Bambach, Markus; id_orcid0000-0002-8790-0807   +3 more
openaire   +2 more sources

Luminous Dark Matter

, 2010
We propose a dark matter model in which the signal in direct detection experiments arises from electromagnetic, not nuclear, energy deposition. This can provide a novel explanation for DAMA while avoiding many direct detection constraints.
Feldstein, Brian, Graham, Peter W., Rajendran, Surjeet   +2 more
core   +1 more source

Indirect Dark Matter Signatures in the Cosmic Dark Ages I. Generalizing the Bound on s-wave Dark Matter Annihilation from Planck [PDF]

, 2015
Recent measurements of the cosmic microwave background (CMB) anisotropies by Planck provide a sensitive probe of dark matter annihilation during the cosmic dark ages, and specifically constrain the annihilation parameter $f_\mathrm{eff} \langle \sigma v \
Slatyer, Tracy R.
core   +2 more sources

Extended reality implementation possibilities in direct energy deposition-arc

Frontiers in Sustainability
The state-of-the-art cleaner smart manufacturing process in the metal industry is the direct energy deposition-arc (DED-arc) process, which has emerged as an energy-efficient method for producing complex geometry metallic constructions.
Hannu Lund, Sakari Penttilä, Tuomas Skriko   +2 more
doaj   +1 more source

Laser In Situ Synthesis of Gradient Fe-Ti Composite during Direct Energy Deposition Process

Journal of Manufacturing and Materials Processing, 2023
The suitability of the direct energy deposition process of exothermic powders Fe-Ti in joining dissimilar metals to produce small parts of a complete shape for various applications is considered.
Igor Shishkovsky, Nina Kakovkina, Ekaterina Nosova, Alexander Khaimovich   +3 more
doaj   +1 more source