Results 41 to 50 of about 417,251 (262)

Tomographic Study of Internal Erosion of Particle Flows in Porous Media

, 2017
In particle-laden flows through porous media, porosity and permeability are significantly affected by the deposition and erosion of particles. Experiments show that the permeability evolution of a porous medium with respect to a particle suspension is ...
Bianchi, Filippo, Herrmann, Hans J., Thielmann, Marcel, Trtik, Pavel, Wittel, Falk K.   +4 more
core   +1 more source

Tectonic denudation and topographic development in the Spanish Sierra Nevada [PDF]

, 2007
The denudation history of the rapidly uplifting western part of the Spanish Sierra Nevada was assessed using apatite fission track (AFT) ages and 10Be analyses of bedrock and fluvial sediments.
Alfaro, Anhert, Argles, Avouac, Beck, Bierman, Bierman, Braga, Brown, Brozovic, Burbank, C. Persano, Calvache, Carrapa, Chamberlain, Codilean, Dempster, Dramis, Dunkl, Dunne, Edwards, England, Fabel, Fernández, Fifield, Gabet, Galindino-Zaldívar, Gallagher, García, Garzione, Gleadow, Gosse, Granger, Granger, Granger, Gómez, Gómez-Ortiz, Hodges, Hovius, Hovius, Hubbard, Hurford, Hurford, J. F. Shroder, Jalut, Johnson, Johnson, Kapp, Keller, Kirchner, Kohl, Kuhleman, L. J. Reinhardt, Lal, Li, Lonergan, Martínez-Martínez, McClay, Mérnard, Niemi, Platt, Platt, Reinhardt, Rey, Riebe, Rodríguez-Fernández, Roering, Sanz de Galdeano, Sanz de Galdeano, Savage, Schildgen, Schmidt, Shroder, Shroder, Simón, Small, Sorkhabi, Stone, Stroeven, Sánchez, Sánchez-Marañón, T. J. Dempster, Tucker, Tucker, Van Bemmelen, Vance, Whipple, Whipple   +87 more
core   +1 more source

Effect of Oxygen Content on Surface and Subsurface Integrity During Turning of Ti–6Al–4V

Advanced Engineering Materials, EarlyView.
This study examines how oxygen content in the ambient atmosphere affects the surface and subsurface properties of Ti–6Al–4V during turning. Results show that oxygen does not influence surface roughness. However, machining in an extremely high vacuum‐adequate atmosphere increases surface hardness by up to 7.8% and induces compressive residual stresses ...
Benjamin Bergmann, Berend Denkena, Hilke Petersen, Florian Schaper   +3 more
wiley   +1 more source

Cellular-Automata model for dense-snow avalanches [PDF]

, 2007
This paper introduces a three-dimensional model for simulating dense-snow avalanches, based on the numerical method of cellular automata. This method allows one to study the complex behavior of the avalanche by dividing it into small elements, whose ...
Avolio M. V., F. Barpi, L. Delli Veneri, M. Borri-Brunetto, McClung D., Mellor M., Norem H., Wolfram S.   +7 more
core   +1 more source

Triaxial Erosion Test for Evaluation of Mechanical Consequences of Internal Erosion

Geotechnical Testing Journal, 2014
Abstract This paper presents a newly developed triaxial apparatus to directly investigate the mechanical behavior of eroded soils. Efforts are devoted to maintaining the back pressure in the tested specimens to ensure a relatively high degree of saturation during the erosion test. Instead of determining the cumulative eroded soil mass by
Lin Ke, Akihiro Takahashi
openaire   +2 more sources

Assessing Altered Coating Adhesion on Plasma‐Deoxidized Surfaces Under Oxygen‐Free Conditions

Advanced Engineering Materials, EarlyView.
This study demonstrates the effectiveness of atmospheric pressure plasma pretreatment in modifying silicon and stainless steel surfaces to improve adhesion. Argon‐hydrogen plasma increases surface roughness and improves adhesion strength, whereas pure argon results in smoother surfaces and structural changes.
Selina Raumel, Lara Kuhr, Khemais Barienti, Sebastian Herbst, Florian Nürnberger, Hans Jürgen Maier, Marc C. Wurz   +6 more
wiley   +1 more source

Technique for Evaluating the Erosive Properties of Ablative Internal Insulation Materials [PDF]

A technique for determining the average erosion rate versus Mach number of candidate internal insulation materials was developed for flight motor applications in 12 inch I.D. test firing hardware.
Hitner, J. M., McComb, J. C.
core   +1 more source

Laboratory study on the effects of hydraulic and granulometric parameters on the response of granular soil to internal erosion [PDF]

, 2019
Erosion is a major environmental problem to agricultural land as well as to civil engineering infrastructures. Rainwater infiltration into granular soils can lead to the migration of fine particles by suffusion.
BENDANI, Karim, MENAD, kamel, MISSOUM, Hanifi   +2 more
core  

Productivity‐Driven Optimization of Laser Powder Bed Fusion Parameters for IN718 Superalloy: Process Control, Microstructure, and Mechanical Properties

Advanced Engineering Materials, EarlyView.
This study demonstrates how optimizing laser power, scanning speed, and hatching distance in laser powder bed fusion can boost the productivity of Inconel 718 manufacturing by up to 29% while maintaining mechanical integrity. The work delivers a validated process window and cost–time analysis, offering industry‐ready guidelines for efficient additive ...
Amir Behjat, Guido Barale, John Stavridis, Ehsan Norouzi, Jin‐Yoo Suh, Dong‐Ik Kim, Luca Iuliano, Abdollah Saboori   +7 more
wiley   +1 more source

Corrosion and Process Analysis of a Preoxidized MgO Recyclate‐Based Cermet Anode in Laboratory‐Scale Na‐Cryolite Molten Salt Electrolysis of Aluminum at 1000°C

Advanced Engineering Materials, EarlyView.
EDX elemental map of the pre‐oxidized MgO–steel cermet anode cross section after electrolysis. The development of inert anodes for aluminum electrolysis remains challenging due to the high corrosivity of cryolite‐based melts at 950°C–1000°C. This study investigates the corrosion and process behavior of a carbon‐free MgO–steel cermet anode derived from ...
Alexander Adamczyk, Farhan Hossain, Felipe A. Garcia Paz, Serhii Yaroshevskyi, Felix Drechsler, Daniel Vogt, Christos G. Aneziris, Alexandros Charitos   +7 more
wiley   +1 more source