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Yu Zhao
Beihang University
30Publications
10H-index
243Citations
Publications 30
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#1Jianchun Zhang (Beihang University)H-Index: 2
#2Yu Zhao (Beihang University)H-Index: 10
Last.Xiaobing Ma (Beihang University)H-Index: 6
view all 3 authors...
Abstract Most reliability modeling methods for the load-sharing k-out-of-n system are based on the assumed lifetime distribution and the relation function between the component failure rate and component load. However, the relation function is difficult to determine since the failure rate data have to be acquired. Therefore, this paper aims to develop a more direct reliability model for the load-sharing system based on the generalized load-strength model. In the presence of discrete external loa...
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#2Wei DaiH-Index: 3
Last.Meiqing WangH-Index: 2
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In the past decade years, much attention has been attached on assembly process reliability in manufacturing system, because the quality and cost of product are highly determined by assembly process. However, existing research on reliability in assembly are mainly focused on study of size deviation propagation. In this paper, the method for risk evaluation in assembly process based on the discrete-time SIRS epidemic model and information entropy was proposed. Firstly, aiming at the issue of assem...
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#1Jianchun Zhang (Beihang University)H-Index: 2
#2Yu Zhao (Beihang University)H-Index: 10
Last.Xiaobing Ma (Beihang University)H-Index: 6
view all 3 authors...
The traditional reliability analysis method for the load-sharing system is mainly based on the component failure rate and assumed lifetime distribution. However, the relationship between the component failure rate and component load is difficult to determine since the time-varying failure rates and corresponding load samples have to be measured. Therefore, we propose a new reliability analysis method for the load-sharing k-out-of-n: F system based on the load-strength model, which also considers...
2 CitationsSource
#2Wei DaiH-Index: 3
Last.Yu ZhaoH-Index: 10
view all 4 authors...
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#1Huan Yu (Beihang University)H-Index: 3
#2Jun Yang (Beihang University)H-Index: 13
Last.Yu Zhao (Beihang University)H-Index: 10
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This article considers the reliability analysis of phased-mission systems with common bus performance sharing. The whole system consists of client nodes, service elements, and a common bus redistri...
3 CitationsSource
#1Jianchun Zhang (Beihang University)H-Index: 2
#2Yu Zhao (Beihang University)H-Index: 10
Last.Xiaobing Ma (Beihang University)H-Index: 2
view all 3 authors...
The structural performance and reliability can be affected by the strength degradation and significant repetitive load events whose occurrence rate may be different in different environments. Furthermore, in the case of the environment affecting load and strength simultaneously, the correlation analysis between load and strength should be considered. Therefore, this paper deals with the time-dependent reliability modelling problem based on the load-strength model, which incorporates the actual e...
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#1Wei DaiH-Index: 3
#2Yongjiao ChiH-Index: 1
Last.Yu ZhaoH-Index: 10
view all 5 authors...
4 CitationsSource
#1Yubing HuangH-Index: 1
#2Wei DaiH-Index: 3
Last.Yu ZhaoH-Index: 10
view all 4 authors...
During the assembly process, there are inevitable variations and noise factors in the material properties, process parameters and screening scheme, which may affect the quality of the product. Using the stress-strength model, an evaluated screening scheme method, by analyzing the variation of the defect density in the assembly process, is proposed and discussed. The influence of screening stress on product defects is considered to determine the screening scheme. We performed the defect stream an...
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#1Yongjiao ChiH-Index: 1
#2Wei DaiH-Index: 3
Last.Yu ZhaoH-Index: 10
view all 5 authors...
There is a growing body of literature that recognizes the importance of product safety and the quality problems during processing. The working status of cutting tools may lead to project delay and cost overrun if broken down accidentally, and tool wear is crucial to processing precision in mechanical manufacturing, therefore, this study contributes to this growing area of research by monitoring condition and estimating wear. In this research, an effective method for tool wear estimation was cons...
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#1Yubing HuangH-Index: 1
#2Wei DaiH-Index: 3
Last.Yu ZhaoH-Index: 10
view all 4 authors...
This study investigated the uncertainty of the multistage assembly process from the viewpoint of a stream of defects in the product assembly process. The vulnerable spots were analyzed and the fluctuations were controlled during this process. An uncertainty evaluation model was developed for the assembly process on the basis of an object-oriented Petri net (OOPN) by replacing its transition function with a fitted defect changing function. The definition of entropy in physics was applied to chara...
2 CitationsSource
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