scholarly journals Study on experiment measurement method of braking force of muzzle brake for vibration analysis

2018 ◽  
Vol 20 ◽  
pp. 179-184
Author(s):  
Dongying Wang ◽  
Baoyuan Wang ◽  
Gang Heng
Keyword(s):  
Vibration Analysis ◽  
Measurement Method ◽  
Braking Force

1108 Development in Measurement Method of Living Body Flexibility by Using Vibration Analysis Model

2013 ◽  
Vol 2013.66 (0) ◽  
pp. 371-372
Author(s):  
Yasuhiro SHIMADA ◽  
Satoshi ISHIKAWA ◽  
Yousuke KOBA ◽  
Shinya KIJIMOTO
Keyword(s):  
Vibration Analysis ◽  
Measurement Method ◽  
Analysis Model ◽  
Living Body

scholarly journals Video Image Correlation-Based Method Used for the Study of the Torsional Vibrations of an Adder Gearbox

Energies ◽  
2021 ◽  
Vol 14 (19) ◽  
pp. 6129
Author(s):  
Ioan Száva ◽  
Botond Pál-Gálfi ◽  
Carol Ambrus ◽  
Sorin Vlase
Keyword(s):  
Vibration Analysis ◽  
Measurement Method ◽  
Optical Measurement ◽  
High Accuracy ◽  
Image Correlation ◽  
Resonance Phenomenon ◽  
Angular Vibration ◽  
Heavy Truck ◽  
Complex Construction ◽  
Angular Amplitude

In this paper, a study of the vibrations that appear in the transmission shafts of an adder gearbox used for a heavy truck is made. The truck has two engines on only one chassis and the power offered by these engines is summated and transmitted to the truck or the working machine. This type of transmission is used for oil production installation for the army. During the transportation of the installation to the workplace, only one engine is running, after mounting installation, both engines are running. This paper studies the vibrations of the adder gearbox, a complex construction, subjected to multiple operating requirements. In this regard, the authors first performed accuracy (accuracy) tests of the VIC 3D system on an original experimental mini-stand. Measurements performed on a mini disc demonstrated the validity and accuracy of the method, even if the cameras used were not high resolution. The authors applied the same principle in the case of the adder box from the truck, obtaining useful results for those in the field. The experimental method uses the facilities of a contactless optical measurement method (VIC-3D), which provides a high-accuracy quantitative linear and angular vibration analysis. The VIC measurement method offers, based on a frontal viewing of the disk during the resonance phenomenon and by simple calculus on the monitored linear displacements, the corresponding angular amplitude.

Analysis of significant measures for thermal conductivity

2020 ◽  
pp. 35-42
Author(s):  
Yuri P. Zarichnyak ◽  
Vyacheslav P. Khodunkov
Keyword(s):  
Thermal Conductivity ◽  
Heat Flux ◽  
Surface Heat Flux ◽  
Heat Flux Density ◽  
Measurement Method ◽  
Conductivity Measurement ◽  
Surface Heat ◽  
Measuring Instrument ◽  
New Class ◽  
Achievable Accuracy

The analysis of a new class of measuring instrument for heat quantities based on the use of multi-valued measures of heat conductivity of solids. For example, measuring thermal conductivity of solids shown the fallacy of the proposed approach and the illegality of the use of the principle of ambiguity to intensive thermal quantities. As a proof of the error of the approach, the relations for the thermal conductivities of the component elements of a heat pump that implements a multi-valued measure of thermal conductivity are given, and the limiting cases are considered. In two ways, it is established that the thermal conductivity of the specified measure does not depend on the value of the supplied heat flow. It is shown that the declared accuracy of the thermal conductivity measurement method does not correspond to the actual achievable accuracy values and the standard for the unit of surface heat flux density GET 172-2016. The estimation of the currently achievable accuracy of measuring the thermal conductivity of solids is given. The directions of further research and possible solutions to the problem are given.

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