Results 81 to 90 of about 125,489 (316)

In Situ Micromechanical Study of Bimodal γ′–γ″ Precipitate Assemblies in Ni–Cr–Al–Nb Superalloy

Advanced Engineering Materials, EarlyView.
A Ni–Cr–Al–Nb superalloy with a bimodal γ′–γ″ precipitate distribution is developed. Composite precipitate assemblies form through heterogeneous nucleation, effectively impeding dislocation motion. Micropillar compression reveals high strength at room and elevated temperatures, governed by precipitate shearing, with coupled faulting mechanisms ...
Ujjval Bansal, Tae‐Hyeok Kang, Pyuck‐Pa Choi, Subin Lee, Christoph Kirchlechner   +4 more
wiley   +1 more source

Low-thrust enabled highly non-Keplerian orbits in support of future Mars exploration

, 2011
The technology of high specific impulse propulsion systems with low thrust is improving, opening up numerous possibilities for future missions applying continuous thrust to force a spacecraft out of a natural Keplerian orbit into a displaced non ...
Bosquillon de Frescheville, Francois, Biggs, James, Macdonald, Malcolm, Mckay, Robert, Vasile, Massimiliano, McKay, Robert J., BIGGS, JAMES DOUGLAS, McInnes, Colin, De Frescheville, Francois Bosquillon   +8 more
core   +1 more source

Bridge-Pier Caisson foundations subjected to normal and thrust faulting:physical experiments versus numerical analysis [PDF]

, 2015
Surface fault ruptures can inflict serious damage to engineering structures built on or near them. In the earthquakes of Kocaeli, Chi-chi, and Wenchuan a number of bridges were crossed by the emerging normal or thrust faults suffering various degrees of ...
Zarzouras, O., Gazetas, G., Drosos, V., Anastasopoulos, I.   +3 more
core   +1 more source

Results of a regional tectonic model building concerning the zone of the Pre-Ural trough (Volga-Ural petroleum province) [PDF]

Нефтегазовая геология: Теория и практика
The results of geological and geophysical interpretation of new and retrospective regional seismic profiles are presented. This makes it possible to significantly elucidate the understanding of the structure and oil and gas potential of sedimentary cover
Fortunatova N.K., Rybal'chenko V.V., Sitdikov N.R., Shishkina T.Yu., Belousov G.A., Kanev A.S., Alferenok A.V., Gorodkov A.B., Taratyn E.A., Sotnikova D.Yu.   +9 more
doaj  

Low Cycle Repetitive Loading of Ti‐6Al‐4V‐Epoxy Composite Lattice Structures for Enhanced Energy Dissipation and Damage Tolerance

Advanced Engineering Materials, EarlyView.
Composite Ti–6Al–4V–epoxy lattice structures are additively manufactured and epoxy infiltrated for cyclic loading. At low lattice volume fractions, hybridization produces synergistic gains in stiffness and energy dissipation. At higher volume fractions, synergy diminishes, although composites still exceed metallic lattices in specific energy ...
Joey Tallon, Jordan Noronha, Justin Dirrenberger, Andrey Molotnikov   +3 more
wiley   +1 more source

Elasto-Hydrodynamic Lubrication Effect in Thrust-Slide Bearings of Scroll Compressors

, 2012
This paper presents the concept of the Elasto-Hydrodynamic Lubrication (EHL) effect for the thrust slide-bearings in scroll compressors, which accounts for the superior lubrication characteristics of these bearings.
Anami, Keiko, Tsuji, Takuma, Ishii, Noriaki, Oku, Tatsuya, Morimoto, Takashi   +4 more
core  

Low thrust propulsion in a coplanar circular restricted four body problem

, 2012
This paper formulates a circular restricted four body problem (CRFBP), where the three primaries are set in the stable Lagrangian equilateral triangle configuration and the fourth body is massless.
Biggs, James, BIGGS, JAMES DOUGLAS, Ceccaroni, Marta   +2 more
core   +1 more source

A Dislocation Perspective on Strength and Toughness in Ceramics

Advanced Engineering Materials, EarlyView.
Dislocations in ceramics enjoy a long but yet under‐appreciated history. The three research waves for dislocations in ceramics highlight the topic evolution over the last 90 years. This review focuses on the impact of dislocation on strength and toughness in ceramics.
Xufei Fang
wiley   +1 more source

Artificial halo orbits for low-thrust propulsion spacecraft

, 2009
We consider periodic halo orbits about artificial equilibrium points near to the Lagrange points L1 and L2 in the circular restricted three-body problem, where the third body is a low-thrust propulsion spacecraft in the Sun-Earth system.
Baig, Shahid, McInnes, Colin R., McInnes, C.R.   +2 more
core   +1 more source

Experimental Characterization of Mycelium‐Based Composites Under Multiple Loading Conditions

Advanced Engineering Materials, EarlyView.
This study examines the mechanical response of mycelium‐based composites under compression, shear, and tension using mechanical testing and imaging methods. The comparison between unpressed and hot‐pressed specimens shows that hot pressing is associated with higher compression and shear stiffnesses.
Shaghayegh Elahi, Kimiya Tajik, Harvey Shaw, Matti Isakov, Sami Pajunen, Lauri Rautkari   +5 more
wiley   +1 more source