Assessment model for the reliability of vehicle non-service brake system based on fault-tree analysis and meta-synthesis weight

2011 ◽  
Author(s):  
Tu Ji-liang ◽  
Duan Rong-xing ◽  
Zhang Xing-yuan ◽  
Dong De-cun
Keyword(s):  
Fault Tree ◽  
Fault Tree Analysis ◽  
Assessment Model ◽  
Brake System ◽  
Tree Analysis

Evaluation of Water Land Safety Based on Explosive Bloom Assessment

2013 ◽  
Vol 361-363 ◽  
pp. 883-887
Author(s):  
Qi Li ◽  
Mou Lv ◽  
Song Ye
Keyword(s):  
Fault Tree ◽  
Fault Tree Analysis ◽  
Water Source ◽  
Evaluation Index System ◽  
Assessment Model ◽  
Analysis Method ◽  
Tree Analysis ◽  
Relative Safety ◽  
Source Data ◽  
Dongying City

According to the frequent phenomenon of the explosive bloom at the water land, the reason could be found using the fault tree analysis method. According to the fault tree analysis results, the evaluation index system could be established combined with a water source data in the Dongying city. Finally, the fuzzy overall assessment model was successfully applied to assess a water land from the point of the explosive bloom in the Dongying city and a relative safety rating is given.

A new risk assessment method based on belief rule base and fault tree analysis

2021 ◽  
pp. 1748006X2110114
Author(s):  
Hai-Long Zhu ◽  
Shan-Shan Liu ◽  
Yuan-Yuan Qu ◽  
Xiao-Xia Han ◽  
Wei He ◽  
...  
Keyword(s):  
Risk Assessment ◽  
Expert Knowledge ◽  
Fault Tree ◽  
Fault Tree Analysis ◽  
Evaluation Process ◽  
Assessment Method ◽  
Assessment Model ◽  
Rule Base ◽  
Tree Analysis ◽  
Belief Rule Base

Risk assessment methods are often used in complex industrial systems to avoid risks and reduce losses. The existing methods have not effectively solved the problems of lack of evaluation data and the interpretability of the entire evaluation process. This paper proposes a new risk assessment model based on the belief rule base (BRB) and Fault Tree Analysis (FTA). The FTA algorithm overcomes the difficulties of traditional BRB model in obtaining expert knowledge, clear indicators, and establishing logical relationships. This method establishes FTA rules based on the BRB model and expands the knowledge base through the FTA algorithm. A Bayesian network is applied as a conversion bridge between the FTA and BRB model. In addition, the model is optimized to reduce the uncertainty in the model. The method proposed is described by a case and its effectiveness is verified.

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.

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.

Fault Tree Analysis for a Modern Communication System

2017 ◽  
Vol 7 (1) ◽  
Author(s):  
Kamal Hamid ◽  
Nadim Chahine
Keyword(s):  
Communication System ◽  
Communication Systems ◽  
Fault Tree ◽  
Fault Tree Analysis ◽  
Theory And Practice ◽  
Tree Analysis ◽  
Satisfactory Performance ◽  
System Components ◽  
Link Budget ◽  
Simulation Results

Wireless communications became one of the most widespread means for transferring information. Speed and reliability in transferring the piece of information are considered one of the most important requirements in communication systems in general. Moreover, Quality and reliability in any system are considered the most important criterion of the efficiency of this system in doing the task it is designed to do and its ability for satisfactory performance for a certain period of time, Therefore, we need fault tree analysis in these systems in order to determine how to detect an error or defect when happening in communication system and what are the possibilities that make this error happens. This research deals with studying TETRA system components, studying the physical layer in theory and practice, as well as studying fault tree analysis in this system, and later benefit from this study in proposing improvements to the structure of the system, which led to improve gain in Link Budget. A simulation and test have been done using MATLAB, where simulation results have shown that the built fault tree is able to detect the system’s work by 82.4%.

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