Results 81 to 90 of about 3,172 (218)
An experimental investigation of the flow through a helicopter rotor in forward flight [PDF]
, 1949 Experiments have been made to determine the flow conditions through a helicopter rotor in forward flight using the smoke filament technique. This method consisted of flying the helicopter behind an aircraft from which smoke generators were suspended on a
W. Stewart, P. Brotherhood
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Fire Testing and Hazard Assessment for Flame Retardant Polymer Composites
Safety Science and Technology, EarlyView.Flame retardant polymer composites are now being evaluated with more than pass or fail flammability tests. Heat release, smoke, toxicity, and system‐level behavior are receiving more attention, and multi‐scale methods are being used to describe fire hazard under more realistic conditions.
Shuheng Wang +8 more
wiley +1 more source
Foamed Concrete Sealing Materials for Coal Seam Gas Drainage Boreholes: A Review
Safety Science and Technology, EarlyView.This study investigates the sealing performance of foamed concrete in gas drainage boreholes. By comparing leakage pathways (a, c) with sealed systems (b, d), the research demonstrates how foamed concrete effectively fills mining‐induced fractures and resists deformation.
Jiaxing Zou +6 more
wiley +1 more source
ON THE AERODYNAMIC INSTABILITIES OF TANDEM CIRCULAR CYLINDERS [PDF]
, 1984 Wake Galloping is defined as cross flow oscillation of leeward cylinder in higher wind velocitydue to Karman vortex shedding when two cylinders are suitably arranged in series with approach-ing flow.In this study, in order to discuss the physical ...
白石, 成人 +4 more
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Pressure effects on the soot production and radiative heat transfer of non-buoyant laminar diffusion flames spreading in opposed flow over insulated wires [PDF]
, 2020 International audienceThis paper investigates experimentally and numerically pressure effects on soot production and radiative heat transfer in non-buoyant opposed-flow flames spreading over wires coated by Low Density PolyEthylene (LDPE).
Guibaud, Augustin +7 more
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Split‐disk testing of precast ultra‐high performance fiber‐reinforced concrete tubes
Structural Concrete, EarlyView.Abstract Ultra‐high performance fiber‐reinforced concrete (UHPFRC) has great potential for structural applications involving precast cylindrical shapes, including pipes, silos and stay‐in‐place forms for concrete columns. This study examines the performance of UHPFRC rings under internal pressure simulated using the split‐disk loading method, along ...
Mina Fakeh, Amir Fam
wiley +1 more source
気流を伴う消音器の放射騒音特性に関する研究 (第 1 報) [PDF]
, 1989 This paper presents an experimental study on generation machanism and reduction methods of air flow noise in cavity type mufflers. The effects of various flow speed, cavity lengths, cavity diameters were examined, clarifying the frequency characteristics
小嶋, 直哉 +2 more
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Journal of Vinyl and Additive Technology, EarlyView.Additives' structures. ABSTRACT Poly(vinyl chloride) has been a key polymeric material since its commercial production in 1931, demonstrating versatility across numerous industries due to its compatibility with various additives. PVC's inherent properties, flame retardance, durability, and recyclability make it ideal for building and construction ...
Stefano Gardi +4 more
wiley +1 more source
World Journal of Surgery, EarlyView.Low‐ and middle‐income countries (LMICs) account for 90% of all deaths from injury globally, yet health systems remain poorly equipped to manage the escalating trauma burden. This study highlights a critical and escalating operative trauma burden in Malawi, driven largely by road traffic injuries, particularly motorcycle taxis.
Cornelius Mukuzunga +6 more
wiley +1 more source
Visualizations of large-scale vortices about a finite-thickness flat plate in pulsating flow [PDF]
, 2000 A new type of how visualization method utilizing a smoke-wire, a high-speed camera with high framing rates and a laser light sheet was employed to delineate the unsteady processes of large-scale vortices in the separated shear layer about a blunt-faced ...
Hyun, Jae Min, Sung, Hyung Jin
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