scholarly journals Characteristics of hydraulic systems used in vehicles other than machines at work

2018 ◽  
Vol 19 (12) ◽  
pp. 701-705
Author(s):  
Joanna Wilczarska ◽  
Ewa Kuliś ◽  
Maciej Matuszewski
Keyword(s):  
Diagnostic Methods ◽  
Hydraulic Systems ◽  
Testing Methods ◽  
Reliable Operation ◽  
Braking System ◽  
Systematic Control

The efficient and reliable operation of the hydraulic systems and in particular the braking system of vehicles is the basis for their safe use. Hydraulic component wear processes are detrimental to the ability to perform tasks and requirements for these systems. It is therefore essential to carry out systematic control of the operation of all hydraulic systems and in particular of the braking system. Such checks. They are performed by diagnostic methods in service workshops as well as in periodical technical tests of vehicles. Hydraulic and brake testing methods depend on the purpose and design of the system, and the method of commissioning these mechanisms is essential. The scope and methods of diagnosing the actuators used are varied, while the efficiency and uniformity of these systems are assessed in the same way for all types of vehicles.

scholarly journals Timely diagnostics of hydraulic equipment in metallurgical production

2021 ◽  
pp. 50-54
Author(s):  
E. V. Gapeenko
Keyword(s):  
Distinctive Feature ◽  
Continuous Monitoring ◽  
Production Equipment ◽  
Diagnostic Methods ◽  
Hydraulic Systems ◽  
Metallurgical Production ◽  
Management Company ◽  
Hydraulic Equipment ◽  
Fast Acting ◽  
Combined Mode

Precision control of hydraulic equipment is a distinctive feature of modern hydraulic systems. With the help of special diagnostic devices, it is possible to reliably and simply monitor the operation of hydraulic equipment. Diagnostic methods can be very different. The article lists the stages and methods of checking hydraulic equipment malfunctions, as well as describes the principles of operation of diagnostic devices of well‑known world manufacturers HYDAC, MOOG, used in OJSC “BSW – Management Company of the Holding “BMC”. Schematically, the connection of the MOOG tester to the production equipment is presented when checking the servo valve in autonomous and combined mode, without resorting to dismantling the valve. Continuous monitoring of the oil purity with the help of the HYDAC FCU device allowed saving time on assessing its condition and taking fast‑acting corrective measures to clean the oil from contamination.

Non-invasive and non-destructive techniques in medicine and industry

1979 ◽  
Vol 292 (1390) ◽  
pp. 137-146 ◽  
Keyword(s):  
Diagnostic Methods ◽  
Non Destructive Testing ◽  
Testing Methods ◽  
Destructive Testing ◽  
Non Invasive ◽  
Clinical Methods ◽  
Surveillance Method ◽  
The Cost ◽  
Non Destructive ◽  
And Training

The paper deals with the question ‘What can industrial users of radiological and ultrasonic non-destructive testing methods learn from medical users of non-invasive diagnostic methods and vice versa?’ and similarly, 'What can designers of equipment for the two types of users learn from each other?’ It compares the requirements of each of the two disciplines: in medicine, as complementary to clinical methods; in industry, as a maintenance aid and as a surveillance method to assist design. The basis of the comparison is the purpose of the examination, the significance of the cost factor and the differing definitions of quality and safety. The paper also deals with the problem of cooperation and of ‘interfaces' between the various teams, a problem aggravated by different educational and training backgrounds of the various interdependent teams. The above comparison is set into a background of the evolution of the methods, and conclusions are attempted for the future.

scholarly journals Pile quality assessment by vibroacoustic method

2020 ◽  
Vol 212 ◽  
pp. 02010
Author(s):  
Sergey Leonovich ◽  
Nely Budrevich ◽  
Ping Lyu ◽  
Jijun Miao
Keyword(s):  
Diagnostic Methods ◽  
Non Destructive Testing ◽  
Testing Methods ◽  
Destructive Testing ◽  
New Production ◽  
Large Cities ◽  
Steady Growth ◽  
Entire Structure ◽  
Production Technologies ◽  
Non Destructive

In recent years, there has been a steady growth in industrial and civil construction, especially in large cities. Construction is often carried out in increasingly difficult geotechnical and hydrogeological conditions. This contributes to the emergence of new production technologies and diagnostic methods. The use of non-destructive testing methods allows you to quickly obtain information about various characteristics of an object without disrupting the process of its operation. This is especially true for hidden work, since access to the research object is practically closed, and its opening may entail undesirable consequences for the operation of the entire structure.

scholarly journals Diagnostics of the On-Vehicle Shock Absorber Testing

2021 ◽  
Vol 23 (3) ◽  
pp. B178-B186
Author(s):  
Piotr Zdanowicz ◽  
Marek Guzek
Keyword(s):  
Shock Absorber ◽  
Standard Procedure ◽  
Diagnostic Methods ◽  
Test Results ◽  
The Road ◽  
Braking System ◽  
Shock Absorbers ◽  
Angle Method ◽  
Half Power ◽  
Vehicle Testing

The practical problems that usually come up during the on-vehicle testing of motor car shock absorbers have been discussed. Results of example tests carried out to the EUSAMA standard procedure were compared to the test results obtained with using newer methods, i.e. the phase angle method and half power bandwidth method (HPBM). The issue of incompatibility of the typical excitation applied by diagnostic suspension testers with one that often occurs in the road conditions has also been raised. It has also been shown that the wear of shock absorbers may affect the value of braking deceleration of cars with ABS (anti-lock braking system) when moving on uneven ground. The main objective of the work was to assess usefulness and reliability of various diagnostic methods intended for the on-vehicle testing of car shock absorbers.

scholarly journals Lubricant Analysis as the Most Useful Tool in the Proactive Maintenance Philosophies of Machinery and its Components

2020 ◽  
Vol 28 (3) ◽  
pp. 196-201 ◽  
Author(s):  
Marián Kučera ◽  
Silvia Kopčanová ◽  
Marie Sejkorová
Keyword(s):  
Direct Contact ◽  
Diagnostic Methods ◽  
Engineering Systems ◽  
Reliable Operation ◽  
Construction Machinery ◽  
Used Oil ◽  
Lubricant Analysis ◽  
Reliability Methods ◽  
Proactive Maintenance

AbstractCondition monitoring and fault diagnosis of engineering systems are critical for the stable and reliable operation in various areas as mobile technology (primarily agricultural, forestry, mining and construction machinery), railways, airlines and large fleets. Thus, to achieve a satisfactory level of reliability for the life of a machine, proactive maintenance strategy is the only key. This means that the application of classical reliability methods suitable for components with sudden failures can be complemented by technical diagnostic methods which have the potential to provide the information about the system condition. In this article we focus on the diagnostic signal related to the used oil – tribodiagnostic measures and is an interesting theoretical item related to the evaluation of the quality of lubricants in the aspect of operation. This is because the oil is in direct contact with single parts of the assessed technical systems. Results tests were reviewed and derived from various parameters of lubricants and their limits that highlight the condition and state of the lubricants under varying categories which include, physiochemical, elemental (wear), contamination and additive analysis.

scholarly journals Principles of formation of a vehicle’s braking system complex diagnostics

2021 ◽  
Vol 332 ◽  
pp. 01018
Author(s):  
Michał Liss ◽  
Roman Zinko ◽  
Oleh Polishchuk ◽  
Marcin Łukasiewicz ◽  
German R. Betancur
Keyword(s):  
Expert System ◽  
Control Period ◽  
Technical Condition ◽  
Diagnostic Methods ◽  
Brake System ◽  
Diagnostic Tools ◽  
Kinematic Parameters ◽  
Factors Affecting ◽  
Braking System ◽  
Further Development

On-board diagnostics of technical condition of the brake system elements provide control during the inter-control period of operation. The use of ABS requires further development of on-board diagnostic tools based on the development of new diagnostic methods using multilevel structural and effect schemes, primarily in terms of efficiency parameters. Increase of the information content by increasing the number of measured kinematic parameters and improving the algorithms for generating control signals for the brake system actuators showed effectiveness of diagnostics. To implement diagnostics of technical state of the brake system elements on board of a vehicle, a structural diagram of a diagnostic device, which uses telecommunication means of connection with an expert system and a voltage strain gauge in the coupling device of a truck has been proposed. It is advisable to carry out in-depth element-by-element diagnostics under bench conditions, with the maximum possible exclusion of random factors affecting the process. To summarize all information about the state of the vehicle's braking system, it is necessary to use an expert system.

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