Results 101 to 110 of about 703,248 (356)

Experimental campaign tests on ultra micro gas turbines, fuel supply comparison and optimization [PDF]

open access: yes, 2018
The increasing demand for miniaturized radio-controlled vehicles inspired the following research. The uses of these unmanned miniaturized/micro vehicles range from aero-modeling to drones for urban control and military applications too.
Capata, Roberto, Saracchini, Matteo
core   +2 more sources

Harm and control of hydraulic oil pollution in coal mine machinery

open access: yesJournal of Physics: Conference Series, 2020
Coal mining machinery such as shearer is one of the most important comprehensive mining equipment in coal mine. Once it breaks down, the consequences cannot be estimated.
Huirong Zhang, Zhong Yao
semanticscholar   +1 more source

A Roadmap for Plasma‐Enabled Electrocatalysis in Urea Production

open access: yesAdvanced Materials, EarlyView.
A modular plasma—electrochemical platform enables fully electrified urea synthesis from air and CO2 under ambient conditions. This Review integrates plasma oxidation, C─N coupling electrolysis, mechanistic insights, and techno‐economic metrics into a roadmap for scalable, distributed, and renewable fertilizer production.
Jingwen Huang   +6 more
wiley   +1 more source

Active Vibration Damping in Hydraulic Construction Machinery

open access: yesProcedia Engineering, 2017
Abstract Hydromechanical systems are prone to significant oscillations, due to the ability of hydraulic oil to store potential energy. This is extremely important when considering mobile hydraulic machinery, especially those machines which handle large loads. Oscillations can negatively affect the stability of the payload, the comfort of the operator,
Davide Cristofori   +2 more
openaire   +2 more sources

Reduced Passivity and Enhanced Pitting Around Crack Tip Measured Using Scanning Electrochemical Cell Microscopy

open access: yesAdvanced Materials Interfaces, EarlyView.
High‐resolution scanning electrochemical cell microscopy (SECCM) mapping shows that plastic deformation near fatigue cracks in CA6NM stainless steel progressively reduces passivity and increases pitting susceptibility. This work reveals how mechanical stress drives localized corrosion in corrosion‐fatigue conditions.
Sarah R. Yassine   +5 more
wiley   +1 more source

Common causes of failure of pneumatic distributors in high precision pneumatic seeders: Proposals towards predictive maintenance [PDF]

open access: yes, 2011
Modern precision pneumatic drills (1-500 kg/ha) used in the cultivation of high density crops such as winter cereals (up to 400 plants/m2) are very high performance equipment that triple the working width (up to 9m) and rates (up to 14 km/h) compared to ...
Barreiro Elorza, Pilar   +5 more
core   +1 more source

Manufacturing Parts for Hydraulic Systems of Agricultural Machinery under Conditions of Ultrasonic Cutting

open access: yesEngineering Technologies and Systems, 2020
Introduction. The article deals with the problem of reducing the efforts when processing thin-walled bushings for hydraulic systems of agricultural machines with the ultrasonically activated cutting tool to achieve the specified processing accuracy and ...
V. A. Skryabin
semanticscholar   +1 more source

Reduction of Micro‐Motion at the Tapered Connection of Hip Endoprostheses with an Adapted Deep Rolling Process of CoCrMo Inner Tapers

open access: yesAdvanced Materials Interfaces, EarlyView.
The ball burnishing processes demonstrated a notable reduction of surface roughness, which in turn helps to reduce the formation of wear particles and is reflected in the significantly reduced wear rate. The torsional resistance in the range of micro‐motion (≈2 Nm) can be improved by implementing a ball burnishing process with augmented depth hardness.
Joachim Döring   +7 more
wiley   +1 more source

Machinery Transportation Management: Case Study of 'Plant-trailer' H&S Incidents [PDF]

open access: yes, 2014
Purpose – The purpose of this paper is to investigate causal agents of health and safety (H&S)incidents among “plant-trailers” (as used by construction and utility contractors to transport mechanical machinery); including the relationship(s) of such ...
Edwards, D., Holt, Gary David
core   +1 more source

A Sleeve Alters the Pressure‐Stretch Curve of a Hyperelastic Balloon to Enable Pre‐Programmed Sequencing

open access: yesAdvanced Materials Technologies, Volume 10, Issue 6, March 18, 2025.
This article demonstrates that encasing a hyperelastic balloon in an inextensible sleeve greatly increases its burst pressure. This simple mechanical behavior can be used to produce an asymmetric inflation‐deflation sequence for coupled balloons with different thicknesses so they could serve as a soft robot's rear and front anchors when driven from a ...
Ifat Gertler, Katherine J. Kuchenbecker
wiley   +1 more source

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