Results 61 to 70 of about 238,845 (361)
Journal of Mathematical Analysis and Applications, 2005 Let \(X\) be a Banach space and denote with \(B(X)\) and \(F(X)\) the algebra of all bounded linear operators on \(X\) and the ideal of all of its finite rank elements, respectively. By a unital standard operator algebra on \(X\), the author means a closed unital subalgebra of \(B(X)\) which contains \(F(X)\).
openaire +3 more sources
Direct Consolidation of Copper–Graphene Composite by Rotary Swaging
Advanced Engineering Materials, EarlyView.The applicability of the rotary swaging method for preparation of electroconductive copper–graphene composite by direct consolidation of powders is proven. The consolidated material features advantageous microstructure featuring fine grains and twins, with homogeneous distribution of graphene, primarily along the twin boundaries, which contribute to ...
Radim Kocich +2 more
wiley +1 more source
Flight-measured inlet pressure transients accompanying engine compressor surges on the F-111A airplane [PDF]
Two-F-111A airplanes were subjected to conditions that caused engine compressor surges and accompanying duct hammershock pressure transients. Flight speed ranged from Mach 0.71 to Mach 2.23, and altitude varied from approximately 3200 meters to 14,500 ...
Holzman, J. K., Nugent, J.
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Advanced Engineering Materials, EarlyView.This study investigates the mechanical properties of Carbon/Aramid intraply hybrid fiber‐reinforced Elium composites under 6 months of water aging. After aging, flexural strength decreases by 25.89%, tensile strength by 4.40%, and fracture toughness by 21.56%.
Muhammed Huseyin Guzel, Gurol Onal
wiley +1 more source
International Journal of Turbomachinery, Propulsion and Power, 2020 The present study focuses on the impact of the underlying RANS turbulence model in the Zonal Detached Eddy Simulation (ZDES) method when used for secondary flow prediction.
Julien Marty, Cédric Uribe
doaj +1 more source
Helium compressors for closed-cycle, 4.5-Kelvin refrigerators [PDF]
An improved helium compressor for traveling-wave maser and closed-cycle refrigerator systems was developed and is currently being supplied to the DSN. This new 5-hp compressor package is designed to replace the current 3-hp DSN compressors.
Hanson, T. R.
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3D‐Printed Architected Material for the Generation of Foam‐Based Protective Equipment
Advanced Engineering Materials, EarlyView.This study investigates 3D‐printed architected structures as alternatives to traditional foams in protective gear. It focuses on customizing impact strength and damping through design and manufacturing integration. Testing shows these structures outperform conventional foams, offering enhanced customizability, lower weight, and tunable performance ...
Ali Zolfagharian +5 more
wiley +1 more source
Performance of the active sidewall boundary-layer removal system for the Langley 0.3-meter Transonic Cryogenic Tunnel [PDF]
A performance evaluation of an active sidewall boundary-layer removal system for the Langley 0.3-m Transonic Cryogenic Tunnel (TCT) was evaluated in 1988.
Balakrishna, S. +2 more
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Impact Fatigue Characteristics of Valve Leaves for Small Hermetic Reciprocating Compressors [PDF]
, 2010 This paper presents an investigation on the impact fatigue characteristics of valve leaves that are prevalently used in hermetic reciprocating compressors especially for the household type refrigerators.
Altunlu, A. Can +3 more
core +3 more sources