Results 21 to 30 of about 276,970 (242)

Detection of Diesel Engine Injector Faults Using Acoustic Emissions [PDF]

open access: yes
This study investigated the method of identifying injector faults in a JCB 444T2 diesel engine using acoustic emission (AE) technique. Different kinds of injector faults were seeded in the four-cylinder, four-stroke, and turbo-engine.
Gu, Fengshou   +3 more
core   +5 more sources

Malicious Node Detection Using a Dual Threshold in Wireless Sensor Networks

open access: yesJournal of Sensor and Actuator Networks, 2013
Sensor networks for various event detection applications cannot function effectively if they are vulnerable to attacks. Malicious nodes can generate incorrect readings and misleading reports in such a way that event detection accuracy and false alarm ...
Yoon-Hwa Choi, Sung Yul Lim
doaj   +1 more source

Frequency Analysis of Partial Short-Circuit Fault in BLDC Motors with Combined Star-Delta Winding

open access: yesEnergies, 2021
This paper analyses the condition of a partial short-circuit in a brushless permanent magnet motor. Additionally, the problem was analysed for three stator winding configurations: star, delta and star-delta connection.
Mariusz Korkosz   +2 more
doaj   +1 more source

Mapping structural lineaments using the edge filters of the potential field: a case study of the Rizhao–Lianyungang area, East China

open access: yesFrontiers in Earth Science, 2023
Background: Edge enhancement plays an important role in potential field data processing and interpretation, which facilitate regional tectonic studies, mineral and energy exploration.
Yanyun Sun   +5 more
doaj   +1 more source

New Infeed Correction Methods for Distance Protection in Distribution Systems

open access: yesEnergies, 2021
The reliability and security of power systems may be jeopardized by the increase in the amounts of renewable generation and the uncertainties produced by these devices.
Fahd Hariri, Mariesa Crow
doaj   +1 more source

Detection and Diagnosis of Motor Stator Faults using Electric Signals from Variable Speed Drives [PDF]

open access: yes, 2015
Motor current signature analysis has been investigated widely for diagnosing faults of induction motors. However, most of these studies are based on open loop drives.
Shaeboub, Abdulkarim   +4 more
core   +2 more sources

GEODYNAMIC FORMATION MODEL OF MIOCENE BLOCKS OF NORTH SIDE OF THE WEST KUBAN DEPRESSION

open access: yesВестник Северо-Кавказского федерального университета, 2022
The article describes the geodynamic characteristics of the West Kuban depression and its structural elements of positions of the concept of plate tectonics. A new geological model of Pribrezhno-Titarovskaya zone of dislocations.
Boris F. Galay   +3 more
doaj  

Numerical Analyses on the Stability of a Deep Coalmine Roadway Passing through a Fault Zone: A Case Study of the Gugui Coalfield in China

open access: yesEnergies, 2021
Massive deformation often occurs when deep coalmine roadways pass through a fault zone due to the poor integrity of rock mass and high tectonic stress.
Yongshui Kang   +5 more
doaj   +1 more source

Two models of hydrocarbon deposits formation in the South Caspian and Middle Kura Depressions

open access: yesГеофизический журнал
The model for the formation of hydrocarbon deposits in the South Caspian and Middle Kura depressions, despite a detailed study of the problem using geophysical and geochemical methods, remains a subject of debate.
N.P. Yusubov, I.S. Guliev
doaj   +1 more source

Lineament Extraction from Digital Terrain Derivate Model: A Case Study in the Girón–Santa Isabel Basin, South Ecuador

open access: yesRemote Sensing, 2022
Geological lineaments are linear or curvilinear surfaces that are considered a superficial expression of discontinuities on the earth’s surface.
Michelle Del Pilar Villalta Echeverria   +4 more
doaj   +1 more source

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