Pub Date : 2019-08-01DOI: 10.1109/QR2MSE46217.2019.9021122
Xinyu Ma, G. Jin
Based on the reliability modeling of Wiener Degradation failure products, the efficiency of life test and degradation test are compared by estimating accuracy of drift parameter and diffusion parameter. In the both cases of no measurement error and measurement error in the degradation test, to examine the influence of the experimental design variables, including the test sample size, the censored time, the degradation test interval, etc., on the parameter estimation variance, simulation is adopted in the degradation test and the timing censored life test. The results show that the degradation test efficiency is much higher than the life test whether measurement error exists or not. This paper provides a basis for the design of long-life product reliability test under small sample size conditions.
{"title":"Comparative Study on Simulation of Life and Degradation Tests Based on Wiener Degradation Failure Products","authors":"Xinyu Ma, G. Jin","doi":"10.1109/QR2MSE46217.2019.9021122","DOIUrl":"https://doi.org/10.1109/QR2MSE46217.2019.9021122","url":null,"abstract":"Based on the reliability modeling of Wiener Degradation failure products, the efficiency of life test and degradation test are compared by estimating accuracy of drift parameter and diffusion parameter. In the both cases of no measurement error and measurement error in the degradation test, to examine the influence of the experimental design variables, including the test sample size, the censored time, the degradation test interval, etc., on the parameter estimation variance, simulation is adopted in the degradation test and the timing censored life test. The results show that the degradation test efficiency is much higher than the life test whether measurement error exists or not. This paper provides a basis for the design of long-life product reliability test under small sample size conditions.","PeriodicalId":233855,"journal":{"name":"2019 International Conference on Quality, Reliability, Risk, Maintenance, and Safety Engineering (QR2MSE)","volume":"135 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116113755","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2019-08-01DOI: 10.1109/QR2MSE46217.2019.9021251
Peter Ypma, R. Ross
The failure behavior of component batches is often characterized by its statistical distribution. For many failure processes the Weibu11-2 distribution is adequate. The relevant parameters can be estimated by the Weighted Least Squares (WLS) method. This method requires a calculation of weights that is inconvenient to implement in spreadsheets and light-calculating devices such as mobile phones and tablets. The present paper presents a procedure to accurately estimate these weights which enables convenient WLS parameter estimation even with standard office software. The procedure is to be built into Incident Management freeware for timely evaluation even after a very few failures within a larger component population.
{"title":"Approximation of Weight Numbers for Weibull Least Squares Parameter Estimation","authors":"Peter Ypma, R. Ross","doi":"10.1109/QR2MSE46217.2019.9021251","DOIUrl":"https://doi.org/10.1109/QR2MSE46217.2019.9021251","url":null,"abstract":"The failure behavior of component batches is often characterized by its statistical distribution. For many failure processes the Weibu11-2 distribution is adequate. The relevant parameters can be estimated by the Weighted Least Squares (WLS) method. This method requires a calculation of weights that is inconvenient to implement in spreadsheets and light-calculating devices such as mobile phones and tablets. The present paper presents a procedure to accurately estimate these weights which enables convenient WLS parameter estimation even with standard office software. The procedure is to be built into Incident Management freeware for timely evaluation even after a very few failures within a larger component population.","PeriodicalId":233855,"journal":{"name":"2019 International Conference on Quality, Reliability, Risk, Maintenance, and Safety Engineering (QR2MSE)","volume":"19 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125208677","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2019-08-01DOI: 10.1109/QR2MSE46217.2019.9021140
Qiong Wu, Jianzhong Yang, Wang Zhu, Jianfeng Man, Min Luo
Attenuating reliability is extremely crucial for Chang’E-4 Probe, which softly landed on the far side of the Moon for the first time of all mankind on January 3, 2019. In the paper the failure mode and effects during attenuating process in the soft landing are investigated, from which the critical failure mode and the corresponding reliability characteristic parameter are both identified. Accordingly, ground test method for attenuating reliability to simulate the actual attenuating on the Moon is given. Then the attenuating reliability assessment method is accordingly proposed, from which the confidence limit of the reliability can be acquired. Finally, attenuating reliability test of Chang’E-4 Probe is conducted, and the confidence limit of attenuating reliability is provided. The assessment results indicate that the attenuating reliability of the probe possesses is very high as verified by the perfect soft land on the Moon.
{"title":"Attenuating Reliability Test and Assessment for Soft Landing of Chang’E-4 Probe","authors":"Qiong Wu, Jianzhong Yang, Wang Zhu, Jianfeng Man, Min Luo","doi":"10.1109/QR2MSE46217.2019.9021140","DOIUrl":"https://doi.org/10.1109/QR2MSE46217.2019.9021140","url":null,"abstract":"Attenuating reliability is extremely crucial for Chang’E-4 Probe, which softly landed on the far side of the Moon for the first time of all mankind on January 3, 2019. In the paper the failure mode and effects during attenuating process in the soft landing are investigated, from which the critical failure mode and the corresponding reliability characteristic parameter are both identified. Accordingly, ground test method for attenuating reliability to simulate the actual attenuating on the Moon is given. Then the attenuating reliability assessment method is accordingly proposed, from which the confidence limit of the reliability can be acquired. Finally, attenuating reliability test of Chang’E-4 Probe is conducted, and the confidence limit of attenuating reliability is provided. The assessment results indicate that the attenuating reliability of the probe possesses is very high as verified by the perfect soft land on the Moon.","PeriodicalId":233855,"journal":{"name":"2019 International Conference on Quality, Reliability, Risk, Maintenance, and Safety Engineering (QR2MSE)","volume":"13 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128795066","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2019-08-01DOI: 10.1109/QR2MSE46217.2019.9021136
C. Su, Jia-Jing Jin
For the commonly used aircraft tensile joints, the finite element method is used to obtain the natural frequencies of the tensile joints. According to the failure criterion that the absolute value of the difference between the natural frequency and the excitation frequency should be less than the specified value, define the vibration limit state equation of the aircraft tensile joint and calculate the resonance failure probability of the aircraft tensile joint in multiple failure modes. This article use the Monte Carlo method random sampling, then we can obtain the mean and standard deviation of the natural frequencies of the aircraft’s tensile joints. We also calculate the reliability of the statistical properties of the random parameters to the natural frequencies of the system at each excitation frequency and study the influence of the statistical characteristics of the parameters on the probability of resonance of the aircraft tensile joints.
{"title":"Frequency Reliability Sensitivity Analysis of Aircraft Tension Joints","authors":"C. Su, Jia-Jing Jin","doi":"10.1109/QR2MSE46217.2019.9021136","DOIUrl":"https://doi.org/10.1109/QR2MSE46217.2019.9021136","url":null,"abstract":"For the commonly used aircraft tensile joints, the finite element method is used to obtain the natural frequencies of the tensile joints. According to the failure criterion that the absolute value of the difference between the natural frequency and the excitation frequency should be less than the specified value, define the vibration limit state equation of the aircraft tensile joint and calculate the resonance failure probability of the aircraft tensile joint in multiple failure modes. This article use the Monte Carlo method random sampling, then we can obtain the mean and standard deviation of the natural frequencies of the aircraft’s tensile joints. We also calculate the reliability of the statistical properties of the random parameters to the natural frequencies of the system at each excitation frequency and study the influence of the statistical characteristics of the parameters on the probability of resonance of the aircraft tensile joints.","PeriodicalId":233855,"journal":{"name":"2019 International Conference on Quality, Reliability, Risk, Maintenance, and Safety Engineering (QR2MSE)","volume":"10 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130508117","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2019-08-01DOI: 10.1109/QR2MSE46217.2019.9021129
Rui Zhu, Baoquan Mao, Yongliang Wu, Zhiqian Wang, Ming Li
The firing accuracy of overhead weapon station mostly influenced by its structure parameters. The rigid flexible coupling dynamic model of overhead weapon station was developed. And sensitivity of some structure parameters were analyzed which affected to the muzzle vibration. According to the analysis results, parameters’ variances for reduced the muzzle vibration were chosen to be the objective functions. Combined with the engineering feasibility, the key structure parameters were filtrated. Then the Latin hypercube method was used to test the variable space to reconstruct the design space and optimized the structure parameter based on Surrogate Model and NSGAII. The results show that the muzzle vibration variance of optimized one has greatly reduce. And it is also can take a reference for the design and optimization to overhead weapon stations.
{"title":"The Structure Parameter optimization Design Based on Surrogate Model and NSGA-II for the Overhead Weapon Stations","authors":"Rui Zhu, Baoquan Mao, Yongliang Wu, Zhiqian Wang, Ming Li","doi":"10.1109/QR2MSE46217.2019.9021129","DOIUrl":"https://doi.org/10.1109/QR2MSE46217.2019.9021129","url":null,"abstract":"The firing accuracy of overhead weapon station mostly influenced by its structure parameters. The rigid flexible coupling dynamic model of overhead weapon station was developed. And sensitivity of some structure parameters were analyzed which affected to the muzzle vibration. According to the analysis results, parameters’ variances for reduced the muzzle vibration were chosen to be the objective functions. Combined with the engineering feasibility, the key structure parameters were filtrated. Then the Latin hypercube method was used to test the variable space to reconstruct the design space and optimized the structure parameter based on Surrogate Model and NSGAII. The results show that the muzzle vibration variance of optimized one has greatly reduce. And it is also can take a reference for the design and optimization to overhead weapon stations.","PeriodicalId":233855,"journal":{"name":"2019 International Conference on Quality, Reliability, Risk, Maintenance, and Safety Engineering (QR2MSE)","volume":"20 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124495667","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2019-08-01DOI: 10.1109/QR2MSE46217.2019.9021186
Zhongchao Sun, T. Yu, W. Cui
A method to measure the relative contribution of the error sources to the output error of function generation mechanism is proposed in this paper, which is called error importance measure (EIM). The error sources and the resultant output error are inevitable in function generation mechanisms. In order to obtain optimum output accuracy, we should concentrate the limited resources on the most responsible error sources. Thus, a method to measure the importance of the error sources is desired. Firstly, the total quality loss of function generation mechanism across the whole motion process is derived based on quadratic Taguchi quality loss function. Then, by means of Taylor series expansion, we decompose the quality loss into a finite number of fractions, indicating the individual and interaction contributions of the error sources. Thirdly, the improved EIM indices are defined and the properties of the proposed method are discussed. At last, we offer an application case to demonstrate the effectiveness of the developed EIM method.
{"title":"Importance Measure of Error Sources in Function Generation Mechanism based on Expected Taguchi Quality Loss","authors":"Zhongchao Sun, T. Yu, W. Cui","doi":"10.1109/QR2MSE46217.2019.9021186","DOIUrl":"https://doi.org/10.1109/QR2MSE46217.2019.9021186","url":null,"abstract":"A method to measure the relative contribution of the error sources to the output error of function generation mechanism is proposed in this paper, which is called error importance measure (EIM). The error sources and the resultant output error are inevitable in function generation mechanisms. In order to obtain optimum output accuracy, we should concentrate the limited resources on the most responsible error sources. Thus, a method to measure the importance of the error sources is desired. Firstly, the total quality loss of function generation mechanism across the whole motion process is derived based on quadratic Taguchi quality loss function. Then, by means of Taylor series expansion, we decompose the quality loss into a finite number of fractions, indicating the individual and interaction contributions of the error sources. Thirdly, the improved EIM indices are defined and the properties of the proposed method are discussed. At last, we offer an application case to demonstrate the effectiveness of the developed EIM method.","PeriodicalId":233855,"journal":{"name":"2019 International Conference on Quality, Reliability, Risk, Maintenance, and Safety Engineering (QR2MSE)","volume":"116 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127307007","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2019-08-01DOI: 10.1109/QR2MSE46217.2019.9021111
Y. Qian, Chao Jiang
For the case of no-failure data under the weibull distribution, when the prior distribution is Beta distribution, the ranges of super-parameters a and b are determined by the characteristics of probability density function. After introducing failure information, the method of the multi-level bayes estimation is modified. The robustness and feasibility of the method are verified by comparing the error of failure probability and the reliability calculated.
{"title":"Research on No-Failure Data Evaluation Method Based on Imported Failure Information","authors":"Y. Qian, Chao Jiang","doi":"10.1109/QR2MSE46217.2019.9021111","DOIUrl":"https://doi.org/10.1109/QR2MSE46217.2019.9021111","url":null,"abstract":"For the case of no-failure data under the weibull distribution, when the prior distribution is Beta distribution, the ranges of super-parameters a and b are determined by the characteristics of probability density function. After introducing failure information, the method of the multi-level bayes estimation is modified. The robustness and feasibility of the method are verified by comparing the error of failure probability and the reliability calculated.","PeriodicalId":233855,"journal":{"name":"2019 International Conference on Quality, Reliability, Risk, Maintenance, and Safety Engineering (QR2MSE)","volume":"11 5","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"113939692","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2019-08-01DOI: 10.1109/QR2MSE46217.2019.9021191
Z. Cui, Shuaidan Li, Tao Yang, Yi Zheng, Jiang Liu, Haiying Cheng
The electrostatic powder spraying machine with excellent performance can effectively promote the application of electrostatic powder spraying production, which has the characteristics of low pollution, energy saving, economy and high film performance. In order to reasonably optimize structural parameters and ensure the reliability of the movable base of an electrostatic powder spraying machine, multi-objective optimization design and reliability analysis were carried out. Firstly, a parametric geometric model and numerical simulation model for the movable base were established according to the working principle and production conditions of the electrostatic powder spraying machine. Secondly, the static and dynamic characteristics of the movable base were analyzed using ANSYS Workbench software, and the distributions of stress, deformation and natural frequency were obtained. Thirdly, the mathematical model for optimum design of the movable base was established. Taking the thickness of the upper support plate, the spacing between the upper and lower support plates, the width of the angle steel edge and the thickness of the angle steel edge as design variables, and taking the mass, natural frequency and maximum deformation as objective parameters, the response surface method were used to analyze the sensitivity of design variables and to optimize the sizes of the movable base. Finally, taking the optimized sizes with high sensitivity as random input variables, the reliability analysis of the structure was carried out by using Monte Carlo method based on Latin hypercube sampling. The results show that the optimal design results satisfying reliability are effective and reliable.
{"title":"Muti-Obiective optimization and Reliability Analysis of Electrostatic Powder Spraying Machine Base","authors":"Z. Cui, Shuaidan Li, Tao Yang, Yi Zheng, Jiang Liu, Haiying Cheng","doi":"10.1109/QR2MSE46217.2019.9021191","DOIUrl":"https://doi.org/10.1109/QR2MSE46217.2019.9021191","url":null,"abstract":"The electrostatic powder spraying machine with excellent performance can effectively promote the application of electrostatic powder spraying production, which has the characteristics of low pollution, energy saving, economy and high film performance. In order to reasonably optimize structural parameters and ensure the reliability of the movable base of an electrostatic powder spraying machine, multi-objective optimization design and reliability analysis were carried out. Firstly, a parametric geometric model and numerical simulation model for the movable base were established according to the working principle and production conditions of the electrostatic powder spraying machine. Secondly, the static and dynamic characteristics of the movable base were analyzed using ANSYS Workbench software, and the distributions of stress, deformation and natural frequency were obtained. Thirdly, the mathematical model for optimum design of the movable base was established. Taking the thickness of the upper support plate, the spacing between the upper and lower support plates, the width of the angle steel edge and the thickness of the angle steel edge as design variables, and taking the mass, natural frequency and maximum deformation as objective parameters, the response surface method were used to analyze the sensitivity of design variables and to optimize the sizes of the movable base. Finally, taking the optimized sizes with high sensitivity as random input variables, the reliability analysis of the structure was carried out by using Monte Carlo method based on Latin hypercube sampling. The results show that the optimal design results satisfying reliability are effective and reliable.","PeriodicalId":233855,"journal":{"name":"2019 International Conference on Quality, Reliability, Risk, Maintenance, and Safety Engineering (QR2MSE)","volume":"331 ","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114057889","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2019-08-01DOI: 10.1109/QR2MSE46217.2019.9021161
Zhong Han, B. Zhang, Chuanyi Fu, J. Xing, Yuan Li, G. Tang
At present, electromechanical systems are becoming more and more complex, and the quality of their key components plays a vital role in the reliability of the whole system. Considering the economy, redundant configuration has become an important reliability assurance method for electromechanical systems. However, there is no good method to determine the redundant configuration level of the system reliability, which results in over-design or under-configuration. For this reason, the reliability redundancy optimization method for vital parts of electromechanical systems is proposed, which provides a theoretical basis for reliability design of redundant system. In this paper, the following aspects are studied. The concept of reliability entropy is defined and the optimal value of reliability redundancy allocation is found through the analysis of reliability entropy. The reliability solution function of redundant system is established, the solution function is deduced and analyzed, the variation law of reliability function is found, and the reliability redundancy optimization is carried out on this basis. Finally, the simulation calculation of reliability entropy is studied to verify the effectiveness of the proposed method. The results show that the proposed method can meet the requirements of reliability index of redundant system.
{"title":"Reliability Redundancy optimization for Vital Parts of Electromechanical Systems","authors":"Zhong Han, B. Zhang, Chuanyi Fu, J. Xing, Yuan Li, G. Tang","doi":"10.1109/QR2MSE46217.2019.9021161","DOIUrl":"https://doi.org/10.1109/QR2MSE46217.2019.9021161","url":null,"abstract":"At present, electromechanical systems are becoming more and more complex, and the quality of their key components plays a vital role in the reliability of the whole system. Considering the economy, redundant configuration has become an important reliability assurance method for electromechanical systems. However, there is no good method to determine the redundant configuration level of the system reliability, which results in over-design or under-configuration. For this reason, the reliability redundancy optimization method for vital parts of electromechanical systems is proposed, which provides a theoretical basis for reliability design of redundant system. In this paper, the following aspects are studied. The concept of reliability entropy is defined and the optimal value of reliability redundancy allocation is found through the analysis of reliability entropy. The reliability solution function of redundant system is established, the solution function is deduced and analyzed, the variation law of reliability function is found, and the reliability redundancy optimization is carried out on this basis. Finally, the simulation calculation of reliability entropy is studied to verify the effectiveness of the proposed method. The results show that the proposed method can meet the requirements of reliability index of redundant system.","PeriodicalId":233855,"journal":{"name":"2019 International Conference on Quality, Reliability, Risk, Maintenance, and Safety Engineering (QR2MSE)","volume":"5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115896535","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2019-08-01DOI: 10.1109/QR2MSE46217.2019.9021164
Chao Yuan, Yifan Zhou, Lin Ma
This paper investigates the maintenance policies of serial flow lines with three workstations and two intermediate buffers, in which workstation processing times, transition times, and repair times are all assumed to be exponentially distributed with different mean values. The exact steady state analysis method based on the Markovian properties of the system state is employed to appraise the performance of the proposed maintenance policy. An algorithm is developed to generate transition matrix for the system state space that consists of the state space of workstations and inventory of buffers. Different from existing maintenance policies, the policy developed in this paper considers current workstation state and adjacent buffer inventory levels simultaneously. In the numerical study, the performance of different maintenance strategy structures is investigated.
{"title":"A Condition-Based Maintenance Policy for a Serial Flow Line with Multiple Intermediate Buffers","authors":"Chao Yuan, Yifan Zhou, Lin Ma","doi":"10.1109/QR2MSE46217.2019.9021164","DOIUrl":"https://doi.org/10.1109/QR2MSE46217.2019.9021164","url":null,"abstract":"This paper investigates the maintenance policies of serial flow lines with three workstations and two intermediate buffers, in which workstation processing times, transition times, and repair times are all assumed to be exponentially distributed with different mean values. The exact steady state analysis method based on the Markovian properties of the system state is employed to appraise the performance of the proposed maintenance policy. An algorithm is developed to generate transition matrix for the system state space that consists of the state space of workstations and inventory of buffers. Different from existing maintenance policies, the policy developed in this paper considers current workstation state and adjacent buffer inventory levels simultaneously. In the numerical study, the performance of different maintenance strategy structures is investigated.","PeriodicalId":233855,"journal":{"name":"2019 International Conference on Quality, Reliability, Risk, Maintenance, and Safety Engineering (QR2MSE)","volume":"69 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116064342","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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