The Present Situation and Progress of Vibration Environment Test Technology

2014 ◽  
Vol 986-987 ◽  
pp. 1696-1699
Author(s):  
Yuan Ding Xing ◽  
Hai Qian ◽  
Ying Cheng Peng ◽  
Bao Liang Zhu ◽  
Meng Huang
Keyword(s):  
Performance Index ◽  
Present Situation ◽  
Processing Technology ◽  
Test Equipment ◽  
Research Status ◽  
Test Technology ◽  
Vibration Measuring ◽  
Technology Structure ◽  
Modern Industry

This paper reviews the research status of vibration environment test equipment and technology. The development of modern vibration measuring sensors, types, processing technology, structure principle and the main performance index of the sensor is made by brief introduction and analysis, the problems existing in the vibration environment test is pointed out, at the same time for their application in the field of modern industry be also made by corresponding introduction.

scholarly journals The present situation and prospect of the processing technology of forage grass in China

2018 ◽  
Vol 63 (17) ◽  
pp. 1677-1685 ◽  
Author(s):  
Jin Zhong ◽  
Kuikui Ni ◽  
Junxiang Yang ◽  
Zhu Yu ◽  
Yong Tao
Keyword(s):  
Present Situation ◽  
Processing Technology ◽  
Forage Grass

Test and Analysis of Machine Center's Principal Spindle Thermal Characteristics

2013 ◽  
Vol 364 ◽  
pp. 159-162 ◽  
Author(s):  
Jian Feng Lin ◽  
Kuo Liu ◽  
Zhi Tan ◽  
Yu Liang Wu
Keyword(s):  
Test Data ◽  
Thermal Characteristics ◽  
Thermal Error ◽  
Present Situation ◽  
Test Machine ◽  
Test Results ◽  
Thermal Errors ◽  
Test Technology

The significance and present situation of machine tool's thermal characteristics test technology is expatiated first. Aiming at certain three-axis vertical machine center's mechanical principal spindle, thermal characteristics test is done when principal spindle's temperature is rise and fall. Spindle thermal error analyser is used to test machine center's thermal errors in X, Y and Z directions and monitoring temperture of spindle. The spindle's temperture and thermal errors are presented and the test results are analyzed at last. The machine center's thermal information are mastered through test data and analysed results.

Co-Processing Technology of Mining and Municipal Solid Waste

2014 ◽  
Vol 955-959 ◽  
pp. 2751-2755
Author(s):  
Li Jie Guo ◽  
Guang Sheng Liu
Keyword(s):  
Municipal Solid Waste ◽  
Solid Waste ◽  
Environmental Issues ◽  
Point Of View ◽  
Processing Technology ◽  
Practical Significance ◽  
Waste Processing ◽  
Research Status ◽  
Filling Materials ◽  
Key Techniques

First of all, hazards of mined-out areas and municipal solid waste are analyzed. Then according to the research status of municipal solid waste processing and mine filling technologies, both of the environmental issues are researched. From the point of view that municipal solid waste and mined-out areas can be regarded as resources to each other, co-processing technology of mining and municipal solid waste is proposed. Research contents and key techniques of this technology are discussed, which contain classification and preprocessing technologies of the filled waste, experiment of filling materials ratio and the techniques of filling municipal solid waste. This technology can not only help to process the municipal solid waste cleanly, but also control the disasters of mined-out areas, so it has an important practical significance.

Research Status and Prospect of Rock Acoustic Emission Technology

2012 ◽  
Vol 170-173 ◽  
pp. 461-464
Author(s):  
Qing Zhang ◽  
Lei Wang
Keyword(s):  
Acoustic Emission ◽  
Processing Technology ◽  
Technology Study ◽  
Research Status ◽  
Practical Project ◽  
Practical Engineering ◽  
Acoustic Emission Technology

The research status of the rock acoustic emission technology had been discussed from three aspects, as the different status rock study, the processing technology study, the character analyzing technology study. The rock acoustic emission should be combined with the practical engineering, and to create effective rock acoustic emission processing and analyzing technology, to make the rock acoustic technology better adapted to the testing of the practical project.

Development of the Self-Propelled-Gun’s Fire Extinguisher Bottle Test Equipment Based on Pump-Valve Combined Control Scheme

2014 ◽  
Vol 575 ◽  
pp. 733-737
Author(s):  
Xue Bing Liao ◽  
Qing Bin Cui ◽  
Jie Lei ◽  
Hui Qun Shan
Keyword(s):  
Response Speed ◽  
The Self ◽  
Test Equipment ◽  
Fire Extinguisher ◽  
Bottle Test ◽  
Control Scheme ◽  
Test Technology ◽  
Combined Control ◽  
Predictive Controller ◽  
Pump Valve

In this paper, according to the requirements of the self-propelled-gun’s fire extinguisher bottle test technology, using variable speed metering pump technology, a variable cain pressure predictive controller is developed. The experiment is done, and experiment results show that the method can improve response speed of pump-valve combined control, and leak detection and pressure test of various types of fire extinguisher bottle is solved effectively. The trial operation proves: this test equipment is high common, high stability and high integration.

Research Status and Prospects of Surface Nanocrystalline Technology of the Metal Materials

2011 ◽  
Vol 239-242 ◽  
pp. 2972-2975
Author(s):  
Yong Hua Sheng
Keyword(s):  
Corrosion Resistance ◽  
Industrial Production ◽  
Preparation Method ◽  
Abrasive Resistance ◽  
Research Status ◽  
Comprehensive Properties ◽  
Metal Materials ◽  
Modern Industry

The metal materials play important roles in the area of the industry. So it is meanful to use some technologies to improve the comprehensive properties of the metal materials. Comparing with other methods, the surface nanocrystalline technology can improve the strength, the hardness, the abrasive resistance and the corrosion resistance of the metal materials. Besides, through the surface nanocrystalline technology, the grain of the organization can be refined, and the lifespan of the fatigue can be prolonged. So, the surface nanocrystalline technology is with widely market application prospect. At present, there are many studies about the surface nanocrystalline technology, and many typical technologies have been applicated in the industrial production successfully, which satisfy the high requirement of the modern industry in some extent. In this article, the principle, the preparation method and the research status of the surface nanocrystalline technology are produced, and the prospection are made.

The Application Research on Signal Processing Technology in Non-Destructive Test Technology

2013 ◽  
Vol 380-384 ◽  
pp. 3474-3478
Author(s):  
Di Jin Guan
Keyword(s):  
Signal Processing ◽  
Nondestructive Test ◽  
Empirical Mode Decomposition ◽  
High Precision ◽  
Decomposition Method ◽  
Processing Technology ◽  
Detection Techniques ◽  
Mode Decomposition ◽  
Test Technology ◽  
Empirical Mode Decomposition Method

The high-precision instruments must be tested to ensure the accuracy and the normal use of the instrument in the application. Traditional detection techniques damage the instrument. So, researching for a technology which has no destruction on high precision instrument is important. This paper puts forward a new ultrasonic nondestructive test technology of precision instruments through empirical mode decomposition method of modern signal processing technology and ultrasonic nondestructive test technology. The first part describes the shortcomings of modern signal processing technology--Fourier and wavelet analysis and the advantage of empirical mode decomposition method. The second part establishes the mathematical model of ultrasonic nondestructive test technology. It also establishes empirical model to enhanced signal and noise ratio using the self-adaptivity of the empirical mode decomposition. It also extracts Intrinsic Mode Function (IMF) of ultrasonic nondestructive test technology using EMD and Hilbert transform signal processing method. Finally, it gets Nonlinear and non-steady-state frequency power spectrum which provides a reliable theoretical basis for the study of nondestructive test technology.

scholarly journals Design of General Test System for Optoelectronic Equipment Based on Computer

2021 ◽  
Vol 2143 (1) ◽  
pp. 012020
Author(s):  
Xuefeng Han
Keyword(s):  
Test System ◽  
Test Equipment ◽  
Traditional Test ◽  
Test Technology ◽  
General Test

Abstract In recent years, with the popularization of optoelectronic equipment in various industries, various reconnaissance equipment and test equipment have also appeared. Traditional test technology and system functions can no longer meet the development of optoelectronic equipment, so it is imperative to introduce general test ideas and establish a general test system.

Review of Testing and Analysis on Metro-Induced Vibration

2014 ◽  
Vol 580-583 ◽  
pp. 1088-1091 ◽  
Author(s):  
Ji Wei Li
Keyword(s):  
Rapid Development ◽  
Vibration Reduction ◽  
Vibration Test ◽  
Paper Test ◽  
Research Status ◽  
Test Technology ◽  
Environmental Vibration ◽  
Theoretical Results ◽  
At Home

With the rapid development of metro, the vibration induced by metro is the more and more common and widely concerned. In this paper, test and analysis of vibration induced by metro is discussed, and the five aspects of the research status at home and abroad are emphasized, which are the analysis of the vibration causes, the analysis of vibration influence, the summary of vibration test technology, the analysis of the relevant theoretical results and the analysis of vibration reduction application measures. This paper will provide the theory basis and the practice reference for the vibration design of environmental vibration induced by metro.

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