Results 241 to 250 of about 2,848,207 (306)
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Thermal mixing effect and heat transfer in U-shaped notch on the mechanical seal face
, 2020A three-dimensional thermohydrodynamic (THD) model of a notched mechanical seal is developed based on the commercial software ANSYS Fluent. The flow behavior of hot and cold fluid in and around the notch, namely, the thermal mixing effect, is detailly ...
Y. Qiu +3 more
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Prediction on fatigue life of U‐notched PMMA plate
Fatigue & Fracture of Engineering Materials & Structures, 2016AbstractIn this paper, fatigue life prediction of U‐notched polymethyl methacrylate (PMMA) plate is numerically investigated based on the combination of fatigue damage mechanism and fatigue crack propagation mechanism. First, strength and stiffness degeneration criterions during the fatigue process are established on the basis of nonlinear progressive ...
W. Liu +5 more
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The acoustics of cavitation in spool valve with U-notches
Proceedings of the Institution of Mechanical Engineers, Part G: Journal of Aerospace Engineering, 2011Spiral cavity produced by the swirling flow is observed in spool valve with U-notches. Individual bubbles with similar grown-up size appear in the wake of the fixed cavity. Consecutive bubble collapse produces frequency peak in the spectra, which decreases with the cavitation number.
L Lu, J Zou, X Fu
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Geometry effects on mode I brittle fracture in U‐notched specimens
Fatigue & Fracture of Engineering Materials & Structures, 2020AbstractThe effects of geometrical constraints on the fracture initiation location and the fracture strength are evaluated in U‐notched specimens using theoretical and experimental analyses. It is proven that high geometrical constraints in pure mode I loading of geometrically symmetric U‐notched specimens can result in occurrence of the maximum ...
Robab Bahadori +3 more
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International Journal of Communication Systems
A band‐notched super wideband (SWB) planar monopole antenna with improved notch characteristics is proposed in this article. A hexagonal SWB antenna operating in the frequency range from 3.04 to 36 GHz is initially designed on Arlon substrate.
S. Mukherjee +5 more
semanticscholar +1 more source
A band‐notched super wideband (SWB) planar monopole antenna with improved notch characteristics is proposed in this article. A hexagonal SWB antenna operating in the frequency range from 3.04 to 36 GHz is initially designed on Arlon substrate.
S. Mukherjee +5 more
semanticscholar +1 more source
Plastic instability in U-notched bend specimens of spheroidized AIS11090 steel
Metallurgical Transactions A, 1982Studies on U-notched bend specimens of spheroidized AISI 1090 steel revealed that plastic instability initiated as a surface roughening in the notch root. The surface waviness preceded subsurface void formation and appeared at a strain in fair agreement with predictions from plasticity theory.
O. A. Onyewuenyi, J. P. Hirth
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Dual Band Notch Planar Patch Antenna for UWB Applications
2020 3rd International Conference on Computing, Mathematics and Engineering Technologies (iCoMET), 2020A novel microstrip patch antenna with dual band notch operation and coplanar waveguide feed (CPW) is proposed in this paper. The initial antenna design efficiently covers the ultra-wideband (UWB) range from 3.1 GHz to 10.6 GHz with ...
A. Ejaz, M. Zahid, Y. Amin, H. Tenhunen
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A novel UWB MIMO antenna array with band notch characteristics using parasitic decoupler
Journal Electromagnetic Waves and Applications, 2020This paper presents a 4 × 4 multiple-input–multiple-output (MIMO) antenna array for ultra-wide band (UWB) applications with 5.5 GHz wireless local area network (WLAN) band rejection characteristics.
M. Hassan +7 more
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Fracture Assessment of U-Notched Graphite Plates Under Tension
International Journal of Fracture, 2013The experimentally obtained tensile load-bearing capacity of fifteen U-notched polycrystalline graphite plates reported in literature was theoretically estimated by means of two well-known brittle fracture models, namely the mean stress (MS) and the point stress (PS) criteria.
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Notch effect assessment in a PUR material using a ring shaped specimen
Theoretical and applied fracture mechanics (Print), 2018Notch effect in porous polyurethane rigid (PUR) materials is analyzed using a ring shaped specimen containing a single radially U-notch of different tip radii.
R. Negru +3 more
semanticscholar +1 more source