scholarly journals RELIABILITY ANALYSIS OF DISTRIBUTOR VALVE OF AIR BRAKE SYSTEM FOR FREIGHT WAGON

2019 ◽  
pp. 095
Author(s):  
Erdinč Rakipovski ◽  
Dragan Milčić
Keyword(s):  
Reliability Analysis ◽  
Fault Tree ◽  
Fault Tree Analysis ◽  
Brake System ◽  
Time To Failure ◽  
Tree Analysis ◽  
Air Brake System ◽  
Brake Cylinder

The results of distributor valve fault tree analysis are presented in this paper. A brief description and procedure of fault tree analysis are given in the first two parts. The reliability of the distributor valve is extremely important for the functioning of the air brake system. For this reason, reliability analysis of distributor valve based on the time to failure is shown in this paper. The distributor valve should react to changes in brake pipe pressure and provide the corresponding pressure in the brake cylinder.

Reliability of Transportation Belt Rollers Used in Surface Coal Digging

2013 ◽  
Vol 633 ◽  
pp. 312-321 ◽  
Author(s):  
Gradimir Ivanović ◽  
Radivoje Mitrovic ◽  
Dragan Jovanovic
Keyword(s):  
Reliability Analysis ◽  
Failure Mode ◽  
Fault Tree ◽  
Fault Tree Analysis ◽  
Reliability Function ◽  
Transportation System ◽  
Complex Relationship ◽  
Tree Analysis ◽  
Reliability Block Diagrams ◽  
System Length

Transport of ground and coal at the surface coal dig in Kostolac, Serbia, is done using transportation belts (3 - 5 kilometres in length) using the systems of BTR (Bagger-Transporter-Remover) and BTM (Bagger-Transporter-Mill). The transporter belt during circular movement is suspended on carry-rollers (during transport of weight) and on support-rollers (without weight). Two or three carry-rollers, or three support-rollers make a garland. Garlands (5 carry and 3 supporting) are built into a section and they enable the movement of belt over them. The number of sections depends on the transportation system length. Reliability of these systems is governed by the reliability of the carry and support rollers. In order to determine the reliability of the BTR and BTM systems, reliability analysis of both carry and support rollers was performed using the method of Fault Tree Analysis (FTA) and Reliability Block Diagrams (RBD). In this paper the assessment of roller reliability is described using the FTA method with failure elements. The reliability function was determined on the basis of the RBD in the case where all of the constructive elements of the rollers are in operation the complex relationship, and when some of the elements are in failure mode the quasi-complex relationship.

FTA-Based Reliability Measurement with Support of TRA

2014 ◽  
Vol 543-547 ◽  
pp. 1091-1094
Author(s):  
Qi Lin ◽  
Yong Chen
Keyword(s):  
Reliability Analysis ◽  
Fault Tree ◽  
Fault Tree Analysis ◽  
Research Area ◽  
New Method ◽  
Analysis Approach ◽  
Technology Readiness ◽  
Readiness Assessment ◽  
Tree Analysis ◽  
Reliability Measurement

Reliability is a research area of highly significance. It emphasizes an important analysis approach: Fault-Tree Analysis (FTA). Then a new method is proposed to collect authentic fault rate indexes, which is always the key of reliability analysis, based on technology readiness assessment (TRA). Last, it provides the quantified result of reliability analysis instance to show the usefulness of the approaches.

Engineering Machinery Engine System Reliability Analysis

2010 ◽  
Vol 139-141 ◽  
pp. 2587-2590 ◽  
Author(s):  
Xiao Nan Zhang ◽  
An Xin Liu ◽  
Qing Zhen Gao ◽  
Xing Qing ◽  
Xing Chang
Keyword(s):  
Reliability Analysis ◽  
System Reliability ◽  
Fuzzy Theory ◽  
Fault Tree ◽  
Fault Tree Analysis ◽  
Fuzzy Mathematics ◽  
Tree Analysis ◽  
Significance Analysis ◽  
Mathematics Method ◽  
Failure Character

It exists in complexity and fuzziness in structure and failure character of engineering machinery complex system. To solve the problem, fuzzy theory was introduced into fault tree analysis, and then the steps, principles and methods of fuzzy fault tree are determined. Based on the analysis of engineering machinery typical engine systemic structure and fault criterion, a fuzzy fault tree is established. Used a fuzzy mathematics method of reliability analysis with fuzzy fault rate and the median method of fuzzy significance analysis, the fuzzy fault rate and fuzzy significance of parts and subsystems is calculated. The result indicates that this method can solve the fuzziness problem of failure criterion and data in fault tree analysis. The result provides valuable reference for the reliability analysis.

Analysis of Mine Hoist System Monitoring and Fault Diagnosis

2014 ◽  
Vol 615 ◽  
pp. 113-117
Author(s):  
Jian Yun Bai ◽  
Li Peng Yan
Keyword(s):  
Fault Diagnosis ◽  
Fault Tree ◽  
Fault Tree Analysis ◽  
Brake System ◽  
Analysis Method ◽  
System Monitoring ◽  
Tree Analysis ◽  
Fuzzy Fault Tree Analysis ◽  
Safety And Reliability ◽  
Mine Hoist

This paper is Zhengli Coal JKMD3.5 × 4 (III) E-type floor-type multi-rope friction hoist for the study, in order to enhance the system to improve monitoring and fault diagnosis for the purpose of fuzzy fault tree analysis method as the lift system the method of fault diagnosis on hoist brake system fault tree analysis, the results of the analysis can play a guiding role in the daily repair and maintenance, thereby enhancing the safety and reliability of the hoist.

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