scholarly journals Novel technology concepts and architecture for on-board condition-based monitoring of railway running gear: The RUN2Rail vision

2020 ◽  
pp. 095440972095140
Author(s):  
Julián Martín Jarillo ◽  
Juan Moreno ◽  
Stefano Alfi ◽  
Sylvain Barcet ◽  
Pascal Bouvet ◽  
...  
Keyword(s):  
Condition Monitoring ◽  
Fault Classification ◽  
Rolling Stock ◽  
Novel Technology ◽  
New Concepts ◽  
Wear Damage ◽  
High Level ◽  
Railway Operation ◽  
Condition Based Monitoring ◽  
Monitoring Application

Bogies are key subsystems for rolling stock safety and, therefore, meaningful and objective data concerning their condition is of paramount importance for railway operation. These subsystems experience severe service conditions causing wear, damage and degradation of components and affecting the vibrations to which the passengers are exposed. As such, safe and reliable operation, together with a high level of comfort for the passengers, can only be assured by an in-depth, data-based and comprehensive maintenance of the bogie components. In this perspective, advanced health monitoring of the running gear plays a fundamental role as the enabler for condition-based maintenance strategies. This paper reports about work performed in the RUN2Rail project aimed at formulating new concepts for the condition monitoring of the running gear. Three case studies are addressed: wheelsets, powertrain and suspension components. For these cases, the suitable choice and location of sensors is investigated and innovative fault detection and fault classification methods are proposed and preliminarily validated by means of numerical experiments and laboratory tests. A concise outline of the impacts and benefits of each proposed condition monitoring application is also provided.

Assessment of professional risk of health of workers of the enterprise for repair of railway carriage

2020 ◽  
pp. 9-19
Author(s):  
O. Klepikov ◽  
A. Boreyko ◽  
G. Kurenkova
Keyword(s):  
Relative Risk ◽  
Working Conditions ◽  
Light Level ◽  
Occupational Risk ◽  
Rolling Stock ◽  
Joint Stock Company ◽  
Stock Company ◽  
Production Factors ◽  
Object Of Study ◽  
High Level

The aim of the study was to assess the professional risk of developing diseases in workers of the railway car repair enterprise. The Voronezh Car Repair Plant, a branch of Vagonremmash Joint-Stock Company, was chosen as the object of study. Methods: «The methodology for calculating individual occupational risk depending on the working conditions and the health status of the employee», developed by the Klin Institute for Protection and Working Conditions in conjunction with the Research Institute of Occupational Medicine (2013), the main professions; cohort study with the calculation of the relative risk of morbidity with temporary disability, the odds ratio, the etiological share of factors in the formation of morbidity (group size: 250 people, experimental group — workers of the main specialties, 95 people — comparison group). Results. According to the research results, the priority factors of occupational health risk include: chemical, noise, heating microclimate, low light level. For certain professions, the share of the contribution of priority factors to the risk profile (PV) reaches 40 %. The indicator of individual occupational risk is 0.12 to 0.26 units. The high level of professional risk (0.22 ÷ 0.26) is characterized by the working conditions of the mechanics for the repair of rolling stock, machine tools (woodworking), casters (metal), thermists, plastic casters. In professional groups with medium and high risk, the indicator of the relative risk of morbidity with temporary disability is higher than 1 (RR = 1.75 and 1.39, respectively), and the etiological share of production factors in the formation of diseases is from 27.95 (subgroup with secondary professional risk) up to 42.88 % (a subgroup with high professional risk), which indicates the professional condition of the disease. Discussion. In general, our data are consistent with the results of similar studies conducted earlier at the car building and car repair enterprises. In order to ensure hygienically safe working conditions and preserve the health of workers, it is necessary to reduce the level of exposure to production factors, including through the introduction of modern equipment and improvement of technological processes.

Coordination of technology of railway operation of the Republic of Tajikistan and organization of railways in international traffic

2018 ◽  
Vol 77 (4) ◽  
pp. 211-217 ◽  
Author(s):  
P. N. Pulatov
Keyword(s):  
Rolling Stock ◽  
Railway Transport ◽  
Transport Services ◽  
Railway Infrastructure ◽  
External Conditions ◽  
The Republic ◽  
Railway Operation ◽  
Required Quality

Current geopolitical and economic conditions for the functioning of railway transport in most post-Soviet states are such that it is extremely difficult to provide required quality of transport services and break-even operations at high expenses for maintaining the railway infrastructure and rolling stock. Dynamics of transportation of the Tajik Railway (TSR) is shown, which displays that most of its sections are classified as low-intensity ones. The paper proposes methodical principles, setting and qualitative analysis of the task of rationalization of operational work and organization of car flows for international transportation, taking into account the specifics of the Tajik Railway. There is a problem of complex maintenance of the efficiency of operational work in modern conditions based on the synthesis of the tasks of self-management (rational internal operational technology of the Tajik Railway) and coordination tasks (technological interaction with railway administrations of other states). Author substantiated the necessity of solving this problem. Proposed classification of technological restrictions and controlled variables in the performance of transport takes into account methods for changing external conditions for the functioning of the railway landfill and methods for increasing internal efficiency of its operation. The search for the solution of the problem involves direct search of variants along its ordered set with clipping of groups of variants that do not correspond to constraints, with the subsequent finding of compromise control over a set of effective alternatives.

scholarly journals Bifurcation Approach to Condition Monitoring: Application to Pulse Energy Conversion Systems

OPSEARCH ◽  
2002 ◽  
Vol 39 (1) ◽  
pp. 1-13 ◽  
Author(s):  
Yuri V. Kolokolov ◽  
Stanislav L. Koschinsky ◽  
Kondo H. Adjallah
Keyword(s):  
Energy Conversion ◽  
Condition Monitoring ◽  
Pulse Energy ◽  
Energy Conversion Systems ◽  
Monitoring Application

scholarly journals Logistic Model Tree Classifier for Condition Monitoring of Wind Turbine Blades

2019 ◽  
Vol 8 (2S11) ◽  
pp. 202-209
Keyword(s):  
Feature Selection ◽  
Wind Energy ◽  
Condition Monitoring ◽  
Logistic Model ◽  
Turbine Blades ◽  
Fault Classification ◽  
Renewable Energy Resources ◽  
Model Tree ◽  
Tree Classifier ◽  
Logistic Model Tree

Wind energy is one of the essential renewable energy resources because of its consistency due to the development of the technology and relative cost affordability. The wind energy is converted into electrical energy using rotating blades which are connected to the generator. Due to environmental conditions and large construction, the blades are subjected to various faults and cause the lack of productivity. The downtime can be reduced when they are diagnosed periodically using condition monitoring technique. These are considered as a machine learning problem which consists of three phases, namely feature extraction, feature selection and fault classification. In this study, statistical features are extracted from vibration signals, feature selection are carried out using J48 algorithm and the fault classification was carried out using logistic model tree algorithm.

scholarly journals Evaluation of readiness of selected transport system

2018 ◽  
Vol 19 (6) ◽  
pp. 47-52
Author(s):  
Piotr Bojar
Keyword(s):  
Transport System ◽  
Public Transport ◽  
Rolling Stock ◽  
Adjacent Area ◽  
The Public ◽  
Transport Operator ◽  
Transport Services ◽  
Safe Transport ◽  
High Level ◽  
The City

The basic tasks of the public public transport operator include reliable and safe transport services under the concluded transport contract with the transport organizer. The entity acting as the operator is obliged to punctually adhere to timetables, it is possible provided that the operator has a rolling stock characterized by a high level of readiness for rolling stock. The paper attempts to assess the readiness of the public transport operator performing tasks in the city and the adjacent area with a total number of residents not exceeding one hundred thousand.

scholarly journals Expedited Biodegradation of Organic Pollutants and Refractory Compounds Using Bio-Electrochemical Systems

2021 ◽  
Author(s):  
Eustace Fernando ◽  
Godfrey Kyazze ◽  
Ahmed Ahsan ◽  
Pavithra Fernando
Keyword(s):  
Difficult Problem ◽  
The Novel ◽  
Alternative Technologies ◽  
Electrochemical Systems ◽  
Novel Technology ◽  
Refractory Compounds ◽  
Slow Kinetics ◽  
Rapid Removal ◽  
High Level ◽  
Kinetics Of

Biodegradation of xenobiotics is often considered to be a slow process. This is especially true if the xenobiotic in question is polymeric in nature, contains many chemical substituent groups or generally exhibits high level of toxicity to environmental microbiota. Due to this observed slow kinetics of degradation, removal of many xenobiotics from contaminated environments using conventional bioremediation technologies is a difficult problem. To alleviate this, alternative technologies showing improved kinetics of biodegradation are sought by the scientific community. One such promising approach is the usage of the novel technology of bio-electrochemical systems for improved degradation of xenobiotics. Due to the newness of this technology and affiliated methods, not much information about its usage for biodegradation of xenobiotics is available in literature. Therefore, this chapter aims to address that gap and bring about a comprehensive analysis on the usage of bio-electrochemical systems for rapid removal of xenobiotic contaminants from the environment.

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