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Reliability Analysis Software Development Based on FMECA

Author: LiRuiBao
Tutor: HeXue
School: Northeastern University
Course: Mechanical Design and Theory
Keywords: FMECA FMECA software VC++ Access database
CLC: TP311.52
Type: Master's thesis
Year: 2009
Downloads: 56
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Abstract


With the extensive application of reliability theory, FMECA technology in the machinery industry has been widespread applicated, especially in large and complex field of mechanical design. The FMECA of mechanical engineering project is an essential part of that proposal. As the continuous improvement of FMECA analysis, the design and development related to the reliability of software has become an irresistible trend. In the field of mechanical engineering, the reliability analysis software has many advantages which is designed by whom has the knowledge of machine design, and it plays a certain role in the promotion of reliability theory wide application and popularity.In this paper, the basic operation of FMECA is described in detail, combining the industry of the application of FMECA at this stage and the software of FMECA is designed. Based on the FMECA methods for different types of applications, design the module of quantitative analysis, the module of qualitative analysis of the risk priority number of analysis, as well as the criticality matrix analysis. Carrying out specific quantitative, qualitative analysis, the functions of the system description and system delamination process use stratified module and system delamination module. Using the built-in database functions sort the value of the criticality ranking of the quantitative product FMECA, as well as the risk priority number of the qualitative FMECA, in order to determine the weak links in the system, to take timely measures to improve the compensation. The software implementation of the criticality matrix take superscript Bitmap and fixed-point on the matrix to generate the dangers. According to the direction of the growth of criticality to determine the weak links in the system, take appropriate measures to improve the compensation. In the database file set the format of the database statements, and then output the general statements.In this paper, examples have been taken by the FMECA. Citing the case from《System Reliability Analysis of Belt Conveyor》, software quantitative analysis the subsystem of driven device. Quoted the example from《FMECA used in ship host system》, using the software analysis the criticality matrix of the mainframe systems of the ship. Reference guide pump technology and the consequences of potential failure modes analysis (PFMEA) method, using the software analysis risk priority number. The results of the software analysis and the results of the manual analysis are consistent, so as to finally verify the rationality and feasibility of the FMECA software.

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CLC: > Industrial Technology > Automation technology,computer technology > Computing technology,computer technology > Computer software > Program design,software engineering > Software Engineering > Software Development
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