Results 91 to 100 of about 4,922,026 (340)

Thermographic Microstructure Monitoring in Electron Beam Additive Manufacturing

Scientific Reports, 2017
To reduce the uncertainty of build performance in metal additive manufacturing, robust process monitoring systems that can detect imperfections and improve repeatability are desired.
J. Raplee, A. Plotkowski, M. Kirka, R. Dinwiddie, A. Okello, R. Dehoff, S. Babu, S. Babu   +7 more
semanticscholar   +1 more source

Laser Metal Deposition of Aluminum Alloys 7075 and 5083 with the Addition of Volatile Alloying Elements through Powder Blending

Advanced Engineering Materials, EarlyView.
This study investigates laser metal deposition of aluminum alloys EN AW‐7075 and EN AW‐5083, using powder blending to compensate zinc and magnesium evaporation. In situ alloying and ex situ alloying with ZnAl12 and AZ91 preserve near‐standard compositions and improve mechanical properties.
Finn Bendixen, Anastasiya Toenjes, Annika Bohlen, Thomas Seefeld   +3 more
wiley   +1 more source

Development of Mobile Robot-Based Precision 3D Position Measurement System

Sensors
This study presents an automated docking block placement system developed for regular and emergency repairs of large ships and naval vessels. Traditional methods involve manually arranging heavy concrete docking blocks using cranes or forklifts, which ...
Pilgong Choi, Jeng-O Kim, Myeongjun Kim, Kyunghan Kim   +3 more
doaj   +1 more source

Macroscopic simulation and experimental measurement of melt pool characteristics in selective electron beam melting of Ti-6Al-4V

, 2017
Selective electron beam melting of Ti-6Al-4V is a promising additive manufacturing process to produce complex parts layer-by-layer additively. The quality and dimensional accuracy of the produced parts depend on various process parameters and their ...
Daniel Riedlbauer, T. Scharowsky, R. Singer, P. Steinmann, C. Körner, J. Mergheim   +5 more
semanticscholar   +1 more source

Unidirectional Tape‐Based Composites from Hemp and Pineapple Leaf Fiber: Mechanical Performance in Conventional and Bio‐Based Matrices

Advanced Engineering Materials, EarlyView.
The study investigates novel semi‐finished products made of unidirectionally arranged hemp or pineapple leaf fiber‐reinforced composites produced from different matrices. The materials are analyzed in terms of their mechanical and interfacial properties and void content.
Nina Graupner, Raja Bade, Valentin Ackermann, Roja M. Baumann, Corvin Bischoff, Jona F. Ebeling, Oskar Glenz, Marlo Groh, Jonathan Groth, Finja Hiller, Tom Hirschmüller, Felix Menke, Syntcha Ngantchou Lecdou, Mika Ohler, Daniel Rafii Vardiny, Darius Richter, Dario Röper, Henrik Schumacher, Theresa Stein, Benjamin Vorbeck, Elisabeth Wermter, Kay Kölzig, Jörg Müssig   +22 more
wiley   +1 more source

Realization of electron vortices with large orbital angular momentum using miniature holograms fabricated by electron beam lithography [PDF]

, 2016
Free electron beams that carry high values of orbital angular momentum (OAM) possess large magnetic moments along the propagation direction. This makes them an ideal probe for measuring the electronic and magnetic properties of materials, and for ...
E. Mafakheri, A. Tavabi, Peng-Han Lu, R. Balboni, Federico Venturi, C. Menozzi, G. Gazzadi, S. Frabboni, Alicia Sit, R. Dunin-Borkowski, E. Karimi, Vincenzo Grillo   +11 more
semanticscholar   +1 more source

Ultrafast generation and control of an electron vortex beam via chiral plasmonic near fields [PDF]

Nature Materials, 2018
Vortex-carrying matter waves, such as chiral electron beams, are of significant interest in both applied and fundamental science. Continuous-wave electron vortex beams are commonly prepared via passive phase masks imprinting a transverse phase modulation
G. Vanacore, G. Berruto, I. Madan, E. Pomarico, P. Biagioni, R. Lamb, D. McGrouther, Ori Reinhardt, I. Kaminer, B. Barwick, H. Larocque, V. Grillo, E. Karimi, F. J. G. D. Abajo, F. Carbone   +14 more
semanticscholar   +1 more source

Nitride‐Reinforced Metal Matrix Nanocomposite Powders Production by Plasma‐Assisted Thermochemical Treatment of Intermetallic Powders

Advanced Engineering Materials, EarlyView.
This study proposes a new methodology for producing metal matrix nanocomposites in the solid state. The process involves the plasma‐assisted thermochemical treatment of metallic alloy powders. As a proof‐of‐concept, TiN nanoparticles are synthesized directly on the surface of FeTi intermetallic powder particles, enabling the development of the ...
Deivison Daros Paim, Antônio Rogério de Souza, Tatiana Bendo, Aloisio Nelmo Klein, Rodrigo Perito Cardoso   +4 more
wiley   +1 more source

Interaction between Molten Al‐Killed Mn–B Steel and Carbon‐Bonded MgO Refractories Based on Recyclates

Advanced Engineering Materials, EarlyView.
High‐temperature interactions between low‐sulfur Al‐killed Mn–B steel and MgO–C refractories (0 and 50 wt% recyclates) are studied via finger immersion tests (1600 °C). Surface‐active elements influence infiltration. MgO/CaS layer forms, along with spinel and calcium silicate.
Matheus Roberto Bellé, Lukas Neubert, Anton Yehorov, Till M. J. Stadtmüller, Christos G. Aneziris, Olena Volkova   +5 more
wiley   +1 more source

The influence of sputter-deposited indium tin oxide thin films on the strength of ultra-thin glass

Open Ceramics
Ultra-thin glass with a thickness of 100µm or below is an attractive substrate for sputter deposition of thin films. However, research has shown that the deposition of functional coatings is often correlated with a significant strength reduction of the ...
Wiebke Langgemach, Matthias Fahland, Edda Rädlein   +2 more
doaj   +1 more source