Results 41 to 50 of about 431,646 (304)

Nitinol 3D Printed by Micro Gas Metal Arc-Based Direct Energy Deposition

Journal of Manufacturing and Materials Processing
Additive manufacturing of NiTi shape memory alloys is challenging due to their sensitivity to composition and thermal history. The gap between high-resolution powder-based AM and high-productivity wire-based processes for NiTi remains a challenge.
Paulo Henrique Grossi Dornelas, Tadeu Castro Silva, João Pedro Oliveira, Ana S. Ramos, Maria Reis, Telmo G. Santos   +5 more
doaj   +1 more source

Experimental Evaluation of 100Cr6 Steel Microindented Surfaces Under Lubricated Nonconformal Point Contacts

Advanced Engineering Materials, EarlyView.
The tribological behavior of 100Cr6 steel spheres textured via Vickers microindentation is evaluated under lubricated sliding by varying both dimple size and density. Fine and dense textures significantly reduce friction across all lubrication regimes, while large dimples increase it.
Farideh Davoodi, Pasquale Guglielmi, Gianfranco Palumbo, Giuseppe Carbone   +3 more
wiley   +1 more source

Laser Direct Metal Deposition (LDMD) – an Overview

International Journal of Advance Research and Innovation, 2017
Laser Direct Metal deposition (LDMD) is an additive manufacturing process, it is used to manufacture complex 3D objects directly from CAD files. Laser creates melt region on surface of substrate and powder material blown on to the laser-induced melt pool to form a layer.
Vaibhav Verma, Adhirath Mandal, Ashish Shukla   +2 more
openaire   +1 more source

Laser Powder Bed Fusion of Alumina: Effects of Scanning Strategies on External and Internal Defects

Advanced Engineering Materials, EarlyView.
This study investigates how scanning strategies affect pure alumina in laser powder bed fusion. Linear 45° scanning yields uniform surfaces but high porosity, while the island‐concentric strategy provides higher density with through‐holes favorable for infiltration. Findings highlight pathways toward optimizing defect‐free alumina parts.
Mohamed Abdelmoula, Gökhan Küçüktürk, Duran Kaya, David Grossin, Christophe Tenailleau, Benjamin Duployer, Enrique Juste, Fabrice Petit   +7 more
wiley   +1 more source

Electrical properties of aluminum contacts deposited by DC sputtering method for photovoltaic applications

E3S Web of Conferences, 2017
The use of aluminum contacts is common in the process of silicon solar cells production because of low contact resistivity. It has also a great importance in thin film technology for photovoltaics, especially in copper-indium-gallium-diselenide (CIGS ...
Krawczak Ewelina, Gułkowski Sławomir
doaj   +1 more source

Advances in the modeling of laser direct metal deposition [PDF]

Journal of Laser Applications, 2014
This paper provides a review of the current state of the art in modeling of laser direct metal deposition and cladding processes and identifies recent advances and trends in this field. The different stages of the process and the features, strengths and weaknesses of models relating to them are discussed.
openaire   +1 more source

Carboxylic‐Acid Functionalized Multiwalled Carbon Nanotube‐Alkane‐Based Resistive Temperature Sensor for Cold Chain Applications

Advanced Engineering Materials, EarlyView.
This study presents a reversible temperature sensor with high switching ratio, ∼103. The device is fabricated using PET‐ITO and carbon nanotube dispersions in alkane. Considering its application in cold chain logistics, a proof‐of‐concept with LED is showcased. Thus, a temperature drop below the threshold temperature (crystallization temperature of the
Sunil Kumar Behera, Philippe Marrec, A. Jorge Parola, Madalena Dionísio, Hugo Águas, Andreia F. M. Santos, Hamed Pourkheirollah, Donald Lupo, César A. T. Laia   +8 more
wiley   +1 more source

Motion planning for a direct metal deposition rapid prototyping system [PDF]

Proceedings 2000 ICRA. Millennium Conference. IEEE International Conference on Robotics and Automation. Symposia Proceedings (Cat. No.00CH37065), 2002
A motion planning strategy was developed and implemented to generate motion control instructions from solid model data for controlling a robotically driven solid free-form fabrication process. The planning strategy was tested using a PUMA type robot arm integrated into a LENS/sup TM/ (Laser Engineered Net Shape) system.
AMES,ARLO L., HENSINGER,DAVID M., KUHLMANN,JOEL L.   +2 more
openaire   +1 more source

Low‐Cost, Large‐Scale Nanoporous Metals by Mechanical Alloying, Oxide Reduction, and Dealloying of Powders

Advanced Engineering Materials, EarlyView.
Powder metal processing provides scalable advantages in nanoporous (np) metal development. Mechanical alloying is used to produce unique precursors for hybrid nanopore formation by oxide reduction and dealloying. As demonstrated in np Ag, this approach improves process efficiency while promoting smaller ligaments and larger pores, both of which are ...
Mark A. Atwater, Oliver A. Fowler
wiley   +1 more source

Preventing Evaporation Products for High-Quality Metal Film in Directed Energy Deposition: A Review

Metals, 2021
Directed energy deposition (DED), a type of additive manufacturing (AM) is a process that enables high-speed deposition using laser technology. The application of DED extends not only to 3D printing, but also to the 2D surface modification by direct ...
Kang-Hyung Kim, Chan-Hyun Jung, Dae-Yong Jeong, Soong-Keun Hyun   +3 more
doaj   +1 more source