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International Journal of Reliability and Safety最新文献

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Effort-based software release and testing stop time decisions 基于工作量的软件发布和测试停止时间决策
International Journal of Reliability and Safety Pub Date : 2019-04-30 DOI: 10.1504/IJRS.2019.10020940
R. Majumdar, P. K. Kapur, S. Khatri, A. Shrivastava
{"title":"Effort-based software release and testing stop time decisions","authors":"R. Majumdar, P. K. Kapur, S. Khatri, A. Shrivastava","doi":"10.1504/IJRS.2019.10020940","DOIUrl":"https://doi.org/10.1504/IJRS.2019.10020940","url":null,"abstract":"To remain competitive and at the same time to satisfy the users' desire, these days software organisations are releasing the software early and removing the remaining number of bugs based on users' feedback or report in the post-release testing phase. Early release may affect software performance due to inadequate elimination of faults due to which the manufacturer may bear post-release cost of fixing the undetected faults. On the other hand, late release may increase the risk of more failures in the functioning environment. Software reliability can be achieved by efficient testing and testing is directly proportional to testing effort/resources consumed. In this paper, we propose a testing effort-based cost model to determine the optimal release and testing stop time and corresponding optimal effort consumed by minimising the total cost. Numerical illustration is done to validate the proposed cost model.","PeriodicalId":39031,"journal":{"name":"International Journal of Reliability and Safety","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-04-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48382371","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}
引用次数: 5
Bearing health assessment based on Hilbert transform envelope analysis and cluster analysis 基于Hilbert变换包络分析和聚类分析的轴承健康评价
International Journal of Reliability and Safety Pub Date : 2019-01-01 DOI: 10.1504/ijrs.2019.10020938
Xin Zhang, Fucheng Sun, Haiping Li, Xianglong Ni, Jianmin Zhao
{"title":"Bearing health assessment based on Hilbert transform envelope analysis and cluster analysis","authors":"Xin Zhang, Fucheng Sun, Haiping Li, Xianglong Ni, Jianmin Zhao","doi":"10.1504/ijrs.2019.10020938","DOIUrl":"https://doi.org/10.1504/ijrs.2019.10020938","url":null,"abstract":"","PeriodicalId":39031,"journal":{"name":"International Journal of Reliability and Safety","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"66709468","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}
引用次数: 1
New component-based reliability model to predict the reliability of component-based software 提出了一种基于构件的可靠性模型，用于构件软件的可靠性预测
International Journal of Reliability and Safety Pub Date : 2019-01-01 DOI: 10.1504/IJRS.2019.10017892
Dimpal Tomar, P. Tomar
{"title":"New component-based reliability model to predict the reliability of component-based software","authors":"Dimpal Tomar, P. Tomar","doi":"10.1504/IJRS.2019.10017892","DOIUrl":"https://doi.org/10.1504/IJRS.2019.10017892","url":null,"abstract":"Component-Based Software (CBS) technology has potential impact on the evolution of software development. One of the dominant questions while designing CBS is to preserve its quality in which reliability plays a crucial part. Therefore prognosis of reliability of Component-Based Software System (CBSS) is difficult because mostly components are of black type so the prediction of the emergent properties like reliability is particularly quite difficult. In this paper, we propose a reliability estimation model noted as Component-Based Reliability Model (CBRM) to assess the reliability of individual components and after integration of components, i.e. based on two factors: component reliability (CR) and average number of interaction failures.","PeriodicalId":39031,"journal":{"name":"International Journal of Reliability and Safety","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"66709827","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}
引用次数: 2
Risk-energy aware service level agreement assessment for computing quickest path in computer networks 计算机网络中计算最快路径的风险能量感知服务水平协议评估
International Journal of Reliability and Safety Pub Date : 2019-01-01 DOI: 10.1504/IJRS.2019.10017893
Ashutosh Sharma, Rajiv Kumar
{"title":"Risk-energy aware service level agreement assessment for computing quickest path in computer networks","authors":"Ashutosh Sharma, Rajiv Kumar","doi":"10.1504/IJRS.2019.10017893","DOIUrl":"https://doi.org/10.1504/IJRS.2019.10017893","url":null,"abstract":"In this paper, a new variant of the Quickest Path Problem (QPP) is addressed with additional factors of risk and energy which leads to the evaluation of Risk-Energy Constrained Quickest Path Problem (REQPP) computation. In REQPP, risk is based on lag-time or delay and energy necessary for the transmission between two adjacent nodes. The formulation of this problem presents a realistic path computation for critical applications. The success of REQPP is measured by defining a Service Level Agreement (SLA). The proposed algorithm is able to solve the risk-energy constrained REQPP for the continuity of communication. SLA fulfills the needs of multi-constrained path whereas its time-complexity is of the order of Dijkstra's algorithm. Finally, in the end, variation of penalty time and risk variation helps to find the high-performance value of the allowed delay time toward success of SLA.","PeriodicalId":39031,"journal":{"name":"International Journal of Reliability and Safety","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"66709840","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}
引用次数: 73
Multi-state system reliability analysis methods based on Bayesian networks merging dynamic and fuzzy fault information 基于贝叶斯网络融合动态和模糊故障信息的多状态系统可靠性分析方法
International Journal of Reliability and Safety Pub Date : 2019-01-01 DOI: 10.1504/IJRS.2019.10017890
He Qin, Ruijun Zhang, Tianyu Liu, Yabing Zha, Liu Jie
{"title":"Multi-state system reliability analysis methods based on Bayesian networks merging dynamic and fuzzy fault information","authors":"He Qin, Ruijun Zhang, Tianyu Liu, Yabing Zha, Liu Jie","doi":"10.1504/IJRS.2019.10017890","DOIUrl":"https://doi.org/10.1504/IJRS.2019.10017890","url":null,"abstract":"Traditional Bayesian Networks (BNs) have limited abilities to analyse system reliability with fuzzy and dynamic information. To deal with such information in system reliability analysis, a new multi-state system reliability analysis method based on BNs was proposed. The proposed method effectively solved the deficiencies of existing reliability analysis methods based on BNs incorporating fuzziness and fault information. In this work, fuzzy set theory and changing failure probability function of components were introduced into BNs, and the dynamic fuzzy subset was introduced. The curve of the fuzzy dynamic fault probability of the leaf node fault state and fuzzy dynamic importance were developed and calculated. Finally, a case study of a truck system was employed to demonstrate the performance of the proposed methods in comparison with traditional fault tree and T-S fuzzy importance analysis methods. The proposed method proved to be feasible in capturing the fuzzy and dynamic information in real-world systems.","PeriodicalId":39031,"journal":{"name":"International Journal of Reliability and Safety","volume":"30 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"66709767","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}
引用次数: 6
Emergency braking mechanism for an elevator using hydraulic and pneumatic actuation 采用液压和气动驱动的电梯紧急制动机构
International Journal of Reliability and Safety Pub Date : 2019-01-01 DOI: 10.1504/ijrs.2019.10017894
N. Rohatgi, Krutarth Mehta, P. Sarkar, T. Michael
{"title":"Emergency braking mechanism for an elevator using hydraulic and pneumatic actuation","authors":"N. Rohatgi, Krutarth Mehta, P. Sarkar, T. Michael","doi":"10.1504/ijrs.2019.10017894","DOIUrl":"https://doi.org/10.1504/ijrs.2019.10017894","url":null,"abstract":"The proposed idea aims at replacing the current safety mechanisms used by the elevators (i.e., governors) which are rope-based safety mechanism to rope independent, actuated by pneumatic and hydraulic cylinders. The proposed safety mechanism is lightweight and mounted on the top of the elevator. The mechanism involves a pneumatic cylinder actuating a hydraulic master cylinder using a class 1 lever for mechanical advantage. The hydraulic cylinder will pressurise the brake fluid and supply it to the callipers mounted on the elevator body. Callipers will cling to the guide rails upon actuation, thus stopping the elevator in very short distance. The effective force to be stopped by the callipers was calculated and parts were designed accordingly. Analyses of parts are done by considering maximum forces acting on hydraulic calliper mount and lever arm for varying thickness. Through calculations and analyses, the proposed system was found to be safe and reliable.","PeriodicalId":39031,"journal":{"name":"International Journal of Reliability and Safety","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"66709905","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}
引用次数: 2
Reliability assessment of pressure vessel design methods 压力容器可靠性评估设计方法
International Journal of Reliability and Safety Pub Date : 2019-01-01 DOI: 10.1504/IJRS.2019.10017889
L. Hongjun, Yang Peng, Xun Huang, Yang Hui
{"title":"Reliability assessment of pressure vessel design methods","authors":"L. Hongjun, Yang Peng, Xun Huang, Yang Hui","doi":"10.1504/IJRS.2019.10017889","DOIUrl":"https://doi.org/10.1504/IJRS.2019.10017889","url":null,"abstract":"Several pressure vessel design methods based on elastic analysis and elastic-plastic analysis are available to designers. This paper proposes a reliability analysis method to assess three pressure vessel design methods: Stress Categorisation Method (SCM), Limit-Load Analysis (LIMIT) in ASME code and DBA-L method which was recently proposed by present authors. It was concluded that with the same input variables into the three analyses, the responses of calculated results of three method were different, which provided an effective guidance to assess and choose the proper design method in engineering practice.","PeriodicalId":39031,"journal":{"name":"International Journal of Reliability and Safety","volume":"27 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"66709717","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}
引用次数: 1
Reliability allocation technique for complex system of systems 复杂系统的可靠性分配技术
International Journal of Reliability and Safety Pub Date : 2019-01-01 DOI: 10.1504/IJRS.2019.10017891
Antony Gratas Varuvel, Pratibha Xavier Pruno
{"title":"Reliability allocation technique for complex system of systems","authors":"Antony Gratas Varuvel, Pratibha Xavier Pruno","doi":"10.1504/IJRS.2019.10017891","DOIUrl":"https://doi.org/10.1504/IJRS.2019.10017891","url":null,"abstract":"Reliability allocation is one of the important tasks during the design phase, which is to be executed as a part of DfR practices. Appropriate methodology is chosen based on the data available and the factors of influence required to be considered. Among those, the widely adopted AGREE method fails to meet the target reliability, when any of the importance indexes is less than unity. In addition, the assumption of exponential pdf is valid only to depict failures arising out of randomness. This paper aims to eliminate the shortcomings. Verification of the model under various boundary conditions has been carried out with the available data in the aerospace domain. Results obtained are found to be achieving the target goal set for the platform, which is a complex SoS.","PeriodicalId":39031,"journal":{"name":"International Journal of Reliability and Safety","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"66709785","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}
引用次数: 1
Topology optimisation design of mechanical tee backsheet 机械三通背板拓扑优化设计
International Journal of Reliability and Safety Pub Date : 2019-01-01 DOI: 10.1504/IJRS.2019.10017888
Jinlong Wang, Junlong Chen
{"title":"Topology optimisation design of mechanical tee backsheet","authors":"Jinlong Wang, Junlong Chen","doi":"10.1504/IJRS.2019.10017888","DOIUrl":"https://doi.org/10.1504/IJRS.2019.10017888","url":null,"abstract":"A finite element model of ASTM 114.3 mechanical tee backsheet is established by using the finite element software ANSYS. The stress distribution of backsheet under pretension force load is obtained through the strength analysis, and based on it, a topology optimisation calculations of backsheet is analysed. According to the topology optimisation results, the backsheet structure is redesigned and the finite element analysis to it shows that reducing the volume of the model of the backsheet while improving its stress distribution, the maximum equivalent stress is reduced and the enhanced chip reliability.","PeriodicalId":39031,"journal":{"name":"International Journal of Reliability and Safety","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"66709707","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}
引用次数: 0
A hybrid fault tolerance framework for SaaS services based on hidden Markov model 基于隐马尔可夫模型的SaaS服务混合容错框架
International Journal of Reliability and Safety Pub Date : 2019-01-01 DOI: 10.1504/IJRS.2019.10017896
Feng Ye, Qian Huang, Wang Zhijian, Ling Li
{"title":"A hybrid fault tolerance framework for SaaS services based on hidden Markov model","authors":"Feng Ye, Qian Huang, Wang Zhijian, Ling Li","doi":"10.1504/IJRS.2019.10017896","DOIUrl":"https://doi.org/10.1504/IJRS.2019.10017896","url":null,"abstract":"With the booming of cloud computing, more and more applications adopt cloud services to implement their critical business. However, failures causing either service downtime or producing invalid results in such applications may range from a mere inconvenience to significant monetary penalties or even loss of human lives. In critical systems, making the cloud services highly dependable is one of the main challenges. Existing researches show that using fault injection for experimental assessment of fault tolerance architecture for cloud services is still an open problem because of the complexity and diversity of failures in cloud environment. Therefore, we propose a hybrid fault tolerance framework which utilises replication and design diversity techniques for SaaS service. In order to verify the effectiveness of the fault tolerance framework in various pragmatic failure scenarios, a mixed fault simulator based on urn and ball model in hidden Markov model is introduced. A series of experiments are carried out for evaluating the reliability of the SaaS service, including single service without replication, single service with retry or reboot, and a service with spatial replication. The results show that the mixed fault simulator is flexible for simulating various faults in cloud environment, and both temporal and spatial redundancy have better effect on the availability and reliability improvement of the SaaS service.","PeriodicalId":39031,"journal":{"name":"International Journal of Reliability and Safety","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"66709915","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}
引用次数: 1
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