Results 1 to 10 of about 108,035 (118)

Investigation Into Vibration Characteristic in Vibrothermography

open access: yesPhotonic Sensors, 2019
Vibration characteristic plays an important role in vibrothermography, which directly affects the heating during the test. In this work, involving all the contacts in the vibrothermography, the “double-mass-three-spring” model is established to explore ...
Yin Li   +3 more
doaj   +3 more sources

Optimization of Operating Parameters for Straw Returning Machine Based on Vibration Characteristic Analysis

open access: yesAgronomy
For the mechanized technical mode of total wheat straw returning to field, there are problems such as large vibration during the operation of the straw returning machine that, in turn, affect the effect of stubble breaking. This study took the Tongtian 1-
Yuanyuan Gao   +7 more
doaj   +3 more sources

Block Modal Analysis of High-speed Rotating Equipment Based on Finite Element Method

open access: yesJournal of Isotopes, 2021
High-speed rotating equipment is used for isotope production in nuclear technology field, consisting of several machines as a mounting unit. The study on modal of block is the important method to guarantee the mechanical reliability of high-speed ...
ZHANG Zhanyu;YUE Chao;LIU Fanglei
doaj   +1 more source

A Study of the Vibration Characteristics of Flexible Mechanical Arms for Pipe String Transportation in Oilfields

open access: yesEnergies, 2022
During the drilling and repairing of wells, the pipe string transfer equipment has a high work frequency. The movement accuracy, response speed, and controllability of the equipment have significant impacts on the stability.
Yan Wang   +4 more
doaj   +1 more source

Vibration Analysis and Active Control of Rotor Shaft in Magnetically Suspended Air-Blower

open access: yesMachines, 2022
An air-blower with active magnetic bearings could improve working efficiency and reduce energy consumption by avoiding contact between the rotor shaft and the stator part.
Lingbo Zheng, Wansheng Nie, Biao Xiang
doaj   +1 more source

Investigation on gas generation characteristics in transformer oil under vibration

open access: yesIET Generation, Transmission & Distribution, 2022
Operating experience has shown that characteristic gases can be found in oil‐immersed power transformers and high‐voltage reactors under strong vibration without discharge or thermal faults occurring.
Chong Guo   +5 more
doaj   +1 more source

Research on Reactor Condition Evaluation Method Based on Acoustic Vibration Characteristic Parameters and Weight Factors [PDF]

open access: yesE3S Web of Conferences, 2021
Compared with the traditional reactor abnormal state detection method, the acoustic vibration detection method combines the advantages of acoustic detection and vibration detection, which has the advantages of simple installation, strong portability and ...
Jia Peng-fei   +5 more
doaj   +1 more source

An Experimental Study of the Effects of Cylinder Lubricating Oils on the Vibration Characteristics of a Two-Stroke Low-Speed Marine Diesel Engine

open access: yesPolish Maritime Research, 2023
Two-stroke, low-speed diesel engines are widely used in large ships due to their good performance and fuel economy. However, there have been few studies of the effects of lubricating oils on the vibration of two-stroke, low-speed diesel engines.
Wu Gang   +5 more
doaj   +1 more source

Analytical expression for approximation of the friction force of the vibration protection mechanism of the operator’s seat [PDF]

open access: yesНаучно-технический вестник Брянского государственного университета, 2022
In mathematical modeling of dynamic and vibration protection systems of operators of construction and road machines, it is necessary to take into account the damping properties of the mechanisms.
Korytov M.S.   +2 more
doaj   +1 more source

Modal parameter calculation and vibration characteristic analysis of transmission line conductor

open access: yesIET Generation, Transmission & Distribution, 2023
Structural damage identification technology based on modal parameters is an extremely effective monitoring method. Because of the structural characteristics of the conductor, with its small diameter and long span, it is not easy to obtain the modal ...
Xinbo Huang   +3 more
doaj   +1 more source

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