Results 11 to 20 of about 1,064,383 (300)

A Spitzer c2d Legacy Survey to Identify and Characterize Disks with Inner Dust Holes [PDF]

, 2010
Understanding how disks dissipate is essential to studies of planet formation. However, identifying exactly how dust and gas dissipates is complicated due to difficulty in finding objects clearly in the transition of losing their surrounding material. We
Alcalá, Juan M., Augereau, Jean-Charles, Bayo, Amelia, Blake, Geoffrey A., Bottinelli, Sandrine, Brown, Joanna M., Chiu, Kuenley, Cieza, Lucas, Evans II, Neal J., Geers, Vincent G., Harvey, Paul M., Herczeg, Gregory J., Lahuis, Fred, Merín, Bruno, Oliveira, Isa, Olofsson, Johan, Prusti, Timo, Spezzi, Loredana, van Dishoeck, Ewine F., Walter, Frederick M.   +19 more
core   +21 more sources

H_2D^+ in the High-mass Star-forming Region Cygnus X [PDF]

, 2012
H_2D^+ is a primary ion that dominates the gas-phase chemistry of cold dense gas. Therefore, it is hailed as a unique tool in probing the earliest, prestellar phase of star formation.
Bacmann, Beuther, Caselli, Caselli, Caselli, Chandler, Chen, Crapsi, D. C. Lis, Di Francesco, di Francesco, Friesen, Gerin, Hoare, J. Kauffmann, Keto, M. A. Thompson, Maret, Ossenkopf, P. Caselli, Pagani, Q. Zhang, Sakai, Sridharan, Swift, T. Pillai, Tafalla, Thompson, Urquhart, Vastel   +29 more
core   +6 more sources

The influence of process parameters and sheet material on the temperature development in the forming zone

Manufacturing Review, 2019
Cold metal forming is a fast and economical way of producing a wide range of precise components. Its profitability mainly depends on part quality, process stability, and service intervals of tools.
Tröber Philipp, Welm Markus, Weiss Hannes Alois, Demmel Peter, Golle Roland, Volk Wolfram   +5 more
doaj   +1 more source

Investigation on blasted tool surfaces as a measure for material flow control in sheet-bulk metal forming

Manufacturing Review, 2019
Highly integrated and closely tolerated functional components can be produced by sheet-bulk metal forming which is the application of bulk forming operations on sheet metal. These processes are characterized by a successive and/or simultaneous occurrence
Merklein Marion, Löffler Maria, Gröbel Daniel, Henneberg Johannes   +3 more
doaj   +1 more source

Experimental investigation of the elastoplastic response of aluminum silicate spray dried powder during cold compaction [PDF]

, 2014
Mechanical experiments have been designed and performed to investigate the elasto-plastic behaviour of green bodies formed from an aluminum silicate spray dried powder used for tiles production.
Bigoni, D., Bosi, F., Cocquio, A., Corso, F. Dal, Gei, M., Piccolroaz, A.   +5 more
core   +2 more sources

Eccentric rotary swaging variants

MATEC Web of Conferences, 2018
Rotary swaging is an incremental cold forming process that changes beneath the geometry also the microstructure and mechanical properties of workpiece.
Toenjes Anastasiya, Ishkina Svetlana, Schenck Christian, von Hehl Axel, Zoch Hans-Werner, Kuhfuss Bernd   +5 more
doaj   +1 more source

Electrical Contacting of Aluminum Bus Bars Using Clinching and Functional Elements

Engineering Proceedings, 2022
As a joining-by-forming process, clinching and the use of functional elements enable low-energy joining of components through form, force, and, under certain conditions, material closure.
Uwe Füssel, Stephan Schlegel, Gregor Reschke, Jan Kalich   +3 more
doaj   +1 more source

High productivity micro rotary swaging

MATEC Web of Conferences, 2018
Rotary swaging is an incremental forming process with two main process variations plunge and infeed rotary swaging. With plunge rotary swaging, the diameter is reduced within a limited section whereas the infeed rotary swaging enables a diameter ...
Moumi Eric, Herrmann Marius, Schenck Christian, Kuhfuss Bernd   +3 more
doaj   +1 more source

Estimation of crack initiation and growth of hard coating by uniaxial tensile test and rotating cross-cylinders wear/friction test

Mechanical Engineering Journal, 2023
Cold forming has required considerably superior hard coating on a die to manufacture net-shaped products. Especially, under poor lubrication conditions or a dry condition, the hard coating is indispensable for the success of manufacturing.
Kazuhito ASAI, Kazuhiko KITAMURA, Chikara MATSUDA, Takuma ISE   +3 more
doaj   +1 more source

How Do Galaxies Get Their Gas? [PDF]

, 2004
We examine the temperature history of gas accreted by forming galaxies in SPH simulations. About half the gas shock heats to roughly the virial temperature of the galaxy potential well before cooling, condensing, and forming stars, but the other half ...
Dave, Romeel, Katz, Neal, Keres, Dusan, Weinberg, David H.   +3 more
core   +3 more sources