{"title":"Study of Variability of the Crack Growth Rate by Applying a Crack Growth Model to Sequences of Extrema Modeled by Markov Matrices","authors":"I. V. Gadolina","doi":"10.1134/S1052618824700584","DOIUrl":null,"url":null,"abstract":"<p>The stage of crack propagation in aircraft structures under fatigue is of great interest. The problem of variation in the duration of fatigue crack growth is considered. Under irregular loading, durability can vary significantly. For this study, loading processes are modeled using the Markov address matrix method and several replicas of the initial process are obtained. The fatigue life of each replica is calculated using the Willenborg crack growth retardation model. A model for random processes, the TWIST sequence, which is widely used in aviation to investigate the likely scatter of durability due to the uncertainty of load information in a numerical experiment, is used as the basis for the simulation.</p>","PeriodicalId":642,"journal":{"name":"Journal of Machinery Manufacture and Reliability","volume":"53 7","pages":"719 - 724"},"PeriodicalIF":0.4000,"publicationDate":"2024-12-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of Machinery Manufacture and Reliability","FirstCategoryId":"1085","ListUrlMain":"https://link.springer.com/article/10.1134/S1052618824700584","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q4","JCRName":"ENGINEERING, MECHANICAL","Score":null,"Total":0}
引用次数: 0
Abstract
The stage of crack propagation in aircraft structures under fatigue is of great interest. The problem of variation in the duration of fatigue crack growth is considered. Under irregular loading, durability can vary significantly. For this study, loading processes are modeled using the Markov address matrix method and several replicas of the initial process are obtained. The fatigue life of each replica is calculated using the Willenborg crack growth retardation model. A model for random processes, the TWIST sequence, which is widely used in aviation to investigate the likely scatter of durability due to the uncertainty of load information in a numerical experiment, is used as the basis for the simulation.
期刊介绍：
Journal of Machinery Manufacture and Reliability is devoted to advances in machine design; CAD/CAM; experimental mechanics of machines, machine life expectancy, and reliability studies; machine dynamics and kinematics; vibration, acoustics, and stress/strain; wear resistance engineering; real-time machine operation diagnostics; robotic systems; new materials and manufacturing processes, and other topics.
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