Analýza kumulace únavového poškození zkušebních těles vyrobených S690 a S960

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but.committeeprof. Ing. Milan Ostrý, Ph.D. (místopředseda) Ing. Karel Struhala, Ph.D. (člen) doc.ing.arch. Milan Palko, Ph.D (předseda) doc. Ing. Petr Horák, Ph.D. (člen) prof. Ing. Jan Eliáš, Ph.D. (člen) prof. Ing. Miroslav Vořechovský, Ph.D. (člen)cs
but.defenceComments and questions of the opponent: 1) For interest, could you please mention typical Vickers hardness values of several common materials? ... ANSWERED 2) Can you please explain what the damage coefficient r in Eq. 5 is and what its values are ... ANSWERED 3) Page 36 – please, where the values of k = 23*10-5 and (sigma)c = 770 MPa comes from? It is not clear from the thesis. Similarly, page 38. ... ANSWERED 4) The opponent wonders about the Ni values (number of cycles to failure) in Tab. 15 for the defined stress levels. They are significantly lower than the number of cycles you applied during the experiment (Tab. 7) without specimen failure. Can you please comment on this inconsistency? ... DISCUSSED, ANSWERED After answering the opponent's questions, a discussion was held with the members of the committee. Verbal evaluation: The student with a very good overview took professional positions on all the comments of the opponent and responded well to all the questions of the committee members that were asked about the defended thesis.cs
but.jazykangličtina (English)
but.programCivil Engineeringcs
but.resultpráce byla úspěšně obhájenacs
dc.contributor.advisorSeitl, Stanislaven
dc.contributor.authorAl Khazali, Mohammad Samien
dc.contributor.refereeMalíková, Lucieen
dc.date.created2023cs
dc.description.abstractThis thesis study and examines the behavior of high strength steels (HSS) during fatigue utilizing S-N curves of models based on the Palmgren-Miner Rule and some invented hypotheses, such as Haibach's model, Corten-Dolan's model and Serensen-Kogajev model. Firstly, a detailed mechanical testing will be done and discussed to ensure creating a proper understanding of the two types of steel that will be the focal point of the research. The curves created are interpolated using measured data form cyclically loaded of the steel to create the relation between the number of cycles the material can withstand before reaching failure state and the level of stress applied on a variety of specimens with different homogenizes but similar characteristics. The accuracy of each model is determined for each grade of steel, the S690 and the S960. Then we will conclude by the end of the work which can be considered suitable and which not of each model and an explanation of the reasoning behind the results achieved to ensure better outcome in future related work.en
dc.description.abstractThis thesis study and examines the behavior of high strength steels (HSS) during fatigue utilizing S-N curves of models based on the Palmgren-Miner Rule and some invented hypotheses, such as Haibach's model, Corten-Dolan's model and Serensen-Kogajev model. Firstly, a detailed mechanical testing will be done and discussed to ensure creating a proper understanding of the two types of steel that will be the focal point of the research. The curves created are interpolated using measured data form cyclically loaded of the steel to create the relation between the number of cycles the material can withstand before reaching failure state and the level of stress applied on a variety of specimens with different homogenizes but similar characteristics. The accuracy of each model is determined for each grade of steel, the S690 and the S960. Then we will conclude by the end of the work which can be considered suitable and which not of each model and an explanation of the reasoning behind the results achieved to ensure better outcome in future related work.cs
dc.description.markBcs
dc.identifier.citationAL KHAZALI, M. Analýza kumulace únavového poškození zkušebních těles vyrobených S690 a S960 [online]. Brno: Vysoké učení technické v Brně. Fakulta stavební. 2023.cs
dc.identifier.other142914cs
dc.identifier.urihttp://hdl.handle.net/11012/208932
dc.language.isoencs
dc.publisherVysoké učení technické v Brně. Fakulta stavebnícs
dc.rightsStandardní licenční smlouva - přístup k plnému textu bez omezenícs
dc.subjectFatigue of materialen
dc.subjectCumulative damageen
dc.subjectS–N Curveen
dc.subjectPalmgren-Miner Ruleen
dc.subjectHaibach's modelen
dc.subjectCorten-Dolan's modelen
dc.subjectSerensen-Kogajev Modelen
dc.subjectFatigue of materialcs
dc.subjectCumulative damagecs
dc.subjectS–N Curvecs
dc.subjectPalmgren-Miner Rulecs
dc.subjectHaibach's modelcs
dc.subjectCorten-Dolan's modelcs
dc.subjectSerensen-Kogajev Modelcs
dc.titleAnalýza kumulace únavového poškození zkušebních těles vyrobených S690 a S960en
dc.title.alternativeAnalysis of fatigue damage accumulation of test specimens made from S690 and S960cs
dc.typeTextcs
dc.type.drivermasterThesisen
dc.type.evskpdiplomová prácecs
dcterms.dateAccepted2023-02-01cs
dcterms.modified2023-02-01-15:47:43cs
eprints.affiliatedInstitution.facultyFakulta stavebnícs
sync.item.dbid142914en
sync.item.dbtypeZPen
sync.item.insts2025.03.26 22:46:40en
sync.item.modts2025.01.15 15:32:40en
thesis.disciplinebez specializacecs
thesis.grantorVysoké učení technické v Brně. Fakulta stavební. Ústav stavební mechanikycs
thesis.levelInženýrskýcs
thesis.nameIng.cs
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