Results 121 to 130 of about 1,842,770 (342)

Al–Cu Composite Casting of Laser‐Deoxidized Copper: Bonding, Interfacial Chemistry, and Thermal Conductivity

Advanced Engineering Materials, EarlyView.
This study investigates laser‐based oxide removal of Cu inserts in oxygen‐free conditions and examines long‐term oxidation kinetics and surface chemistry under different atmospheres via X‐ray photoelectron spectroscopy. Al–Cu compound casting with differently oxidized surfaces is performed, and intermetallic phase formation, morphology, and thermal ...
Timon Steinhoff, Finn‐Lennard Janthur, Sascha Zimmermann, Sarah Seffer, Jörg Hermsdorf, René Gustus, Ludger Overmeyer, Wolfgang Maus‐Friedrichs, Hans Jürgen Maier, Christian Klose   +9 more
wiley   +1 more source

Development of a precision laser interferometer for roll measurement (Enhancing of sensitivity by retroreflection methods)

Nihon Kikai Gakkai ronbunshu, 2014
Almost all geometric deviations that occur on a machine tool can be detected most precisely with the laser measurement system. However, the roll cannot be detected yet since the interferometer for it is not present. The purpose of the study is to propose
Toshihiro NAKAYABU, Masato OKADA, Naoki ASAKAWA, Yu KANAMARU, Kenichi HIROSAKI, Youichi TAMURA, Hideo YACHI, Akihiro SHIMIZU, Hiroyuki KAWARA, Koichi AMAYA   +9 more
doaj   +1 more source

Natural Slow-Roll Inflation

, 1993
It is shown that the non-perturbative dynamics of a phase change to the non-trivial phase of $\lambda\varphi^4$-theory in the early universe can give rise to slow-rollover inflation without recourse to unnaturally small couplings.Comment: 14 LaTex pages (
Langbein, R. F., Langfeld, K., Reinhardt, H., Smekal, L. v.   +3 more
core   +2 more sources

Resistance Rapid Heating of Aluminum Coatings in an Extreme High Vacuum–Adequate Atmosphere for Hot Stamping

Advanced Engineering Materials, EarlyView.
The subject of this work is the development of a corrosion‐protective coating on steel sheets for form hardening. Rapid heating in an extreme high vacuum (XHV)‐adequate atmosphere is a useful method to prevent oxidation during alloying of 22MnB5 and aluminum to obtain a metallurgical bonding.
Lorenz Albracht, Alexander Schnettger, Ulrich Holländer, Sven Hübner, Bernd‐Arno Behrens, Hans Jürgen Maier   +5 more
wiley   +1 more source

Twin roll casting and melt conditioned twin-roll casting of magnesium alloys [PDF]

, 2008
Recently, BCAST at Brunel University has developed a MCAST (melt conditioning by advanced shear technology) process for conditioning liquid metal at temperature either above or bellow the alloy liquidus using a high shear twin-screw mechanism.
Bayandorian, I, Bian, Z, Fan, Z, Zhang, H W   +3 more
core  

Slow-roll, acceleration, the Big Rip and WKB approximation in NLS-type formulation of scalar field cosmology

, 2008
Aspects of non-linear Schr\"{o}dinger-type (NLS) formulation of scalar (phantom) field cosmology on slow-roll, acceleration, WKB approximation and Big Rip singularity are presented.
Burin Gumjudpai, Calcagni G, Chervon S V Zhuravlev V M, Dauxois T, Dunkley J (WMAP Collaboration), D’Ambroise J, Gibbons G W, Goldhaber G, Gumjudpai B, Gumjudpai B, Gumjudpai B, Gumjudpai B, Hinshaw G (WMAP Collaboration), Kamenshchik A Luzzi M Venturi G, Komatsu E (WMAP Collaboration), Leith B M, Liddle A R, Lidsey J E, Padmanabhan T, Perlmutter S, Phetnora T Sooksan R Gumjudpai B, Riess A G, Riess A G, Riess A G, Riess A G, Sato K, Scranton R (SDSS Collaboration), Spergel D N, Starobinsky A A, Tonry J L, Urena-Lopez L A, Williams F L, Williams F L, Wood-Vasey W M, Wright E L, Yurov A V, Yurov A V Astashenok A V Yurov V A   +36 more
core   +1 more source

Roll-to-roll fabrication of touch-responsive cellulose photonic laminates

Nature Communications, 2018
Hydroxypropyl-cellulose (HPC), a derivative of naturally abundant cellulose, can self-assemble into helical nanostructures that lead to striking colouration from Bragg reflections.
Hsin-Ling Liang, Mélanie M. Bay, Roberto Vadrucci, Charles H Barty-King, Jialong Peng, J. Baumberg, Michael F. L. De Volder, S. Vignolini   +7 more
semanticscholar   +1 more source

Characterization of Macro/Microstructure and Corrosion Resistance of Austenitic Gas Tungsten Arc Welding Cladding

Advanced Engineering Materials, EarlyView.
Cladding is a proven method that boosts the surface qualities of mechanical parts by applying a layer of more durable material over a base substrate. This work responds to the needs of offshore and pressure vessels sectors by focusing on cladding a super austenitic steel onto low‐carbon steel through gas tungsten arc welding.
E. J. da Cruz Junior, F. M. F. A. Varasquim, F. O. Carvalho, L. F. F. Santiago, V. A. Ventrella, I. Calliari, M. Pigato   +6 more
wiley   +1 more source

Model support roll balance and roll coupling [PDF]

The design concepts of two specialized wind tunnel model support mechanisms are described. The forced oscillation roll balance mechanism was designed to meet the specific requirement to measure aerodynamic forces and moments to permit determination of ...
Carroll, W. J., Sharpes, R. E.
core   +1 more source

Warm inflation with an oscillatory inflaton in the non-minimal kinetic coupling model

, 2017
In the cold inflation scenario, the slow roll inflation and reheating via coherent rapid oscillation, are usually considered as two distinct eras. When the slow roll ends, a rapid oscillation phase begins and the inflaton decays to relativistic particles
Goodarzi, Parviz, Sadjadi, H. Mohseni
core   +2 more sources