Results 71 to 80 of about 58,702 (295)

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

Investigation of novel trochoidal toolpath strategies for productive and efficient directed energy deposition processes [PDF]

, 2019
Directed energy deposition (DED) is an additive manufacturing technology where a moving energy source creates a meltpool on the surface of a substrate into which feedstock material is deposited to form the final part geometry. Maintenance of the meltpool
Soshi, Masakazu, Li, Geng, Odum, Kyle
core   +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

Investigation of Heat Treatment Strategies for Additively-Manufactured Tools of X37CrMoV5-1

Metals, 2018
For cost-intensive products like automobiles, clients often with to personalize their product; this forces the industry to create a large diversity of combinable parts. Additionally, the life cycles of many components become shorter.
Daniel Junker, Oliver Hentschel, Michael Schmidt, Marion Merklein   +3 more
doaj   +1 more source

An exploratory analysis on laser polishing of components by laser powder directed energy deposition [PDF]

Directed Energy Deposition (DED) is one of the most challenging metal additive manufacturing (AM) processes on the market, still one of its main drawbacks is the poor surface characteristic.
Gabriele Piscopo, Giuseppe Vecchi, Eleonora Atzeni, Alessandro Salmi   +3 more
core   +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

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

Electrochemical Evaluation of Compressed Selective Laser Melted AlSi7Mg and AlSi10Mg Alloys in Chloride Environment

Advanced Engineering Materials, EarlyView.
The corrosion performance of AlSi7Mg and AlSi10Mg alloys produced through selective laser melting (SLM) was examined under compressive stress in a chloride environment. Electrochemical analyses, including open‐circuit potential (OCP), potentiodynamic polarization (CPP), and electrochemical impedance spectroscopy (EIS), were complemented by scanning ...
Femi John Akinfolarin, Samson Dare Oguntuyi, Peter Apata Olubambi   +2 more
wiley   +1 more source

Towards quality controllable strategies in wire-arc directed energy deposition

International Journal of Extreme Manufacturing
Wire-arc directed energy deposition (wire-arc DED) enables the fabrication of large-scale metal components with rapid manufacturing ability and diverse material selection, making it a compelling technology in industries and defenses.
Hanqi Gao, Hengrui Li, Dandan Shao, Naiwen Fang, Yugang Miao, Zengxi Pan, Huijun Li, Bo Zhang, Zhike Peng, Bintao Wu   +9 more
doaj   +1 more source

Effects of fermentable starch and straw-enriched housing on energy partitioning of growing pigs [PDF]

, 2008
Both dietary fermentable carbohydrates and the availability of straw bedding potentially affect activity patterns and energy utilisation in pigs. The present study aimed to investigate the combined effects of straw bedding and fermentable carbohydrates ...
Brand, H., van den, Gerrits, W.J.J., Zandstra, T., Heetkamp, M.J.W., van den Brand, H., T. Zandstra, W.J.J. Gerrits, J.E. Bolhuis, Staals, S.T.M., Alferink, S.J.J., H. van den Brand, S.T.M. Staals, M.J.W. Heetkamp, Bolhuis, J.E., S.J.J. Alferink   +14 more
core   +1 more source