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    <subfield code="a">Cai01.13.13.Ph.D.2025.Ma.R</subfield>
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    <subfield code="a">Mark Nassef Naguib Youssef, </subfield>
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    <subfield code="a">Ratcheting behavior of defected pressurized pipes under cyclic moment /</subfield>
    <subfield code="c">by Mark Nassef Naguib Youssef ; Supervisors Prof. Mohammad M. Megahed, Prof. Dr. Chahinaz A. Saleh, Dr. Sahour N. Sayed. </subfield>
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    <subfield code="a">140 pages :</subfield>
    <subfield code="b">illustrations ;</subfield>
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    <subfield code="e">CD.</subfield>
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    <subfield code="a">Thesis (Ph.D)-Cairo University, 2025.</subfield>
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    <subfield code="a">Bibliography: pages 131-140.</subfield>
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    <subfield code="a">This thesis investigates the ratcheting and shakedown behavior of defected 
pressurized pipelines under cyclic loading. A combined experimental and FE 
approach was employed to analyze the effects of defect geometry and loading 
conditions. The FE models were validated against the experimentally recorded 
outcomes revealing adequate correlation, achieving acceptable accuracy. Extensive 
parametric studies and logistic regression analyses were conducted to predict 
failure mechanisms. The findings provide valuable insights into structural integrity 
assessment and pipeline durability under cyclic stresses. </subfield>
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    <subfield code="a">Issues also as CD.</subfield>
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    <subfield code="a">Text in English and abstract in Arabic &amp; English.</subfield>
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    <subfield code="a">Mechanical Design</subfield>
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    <subfield code="a">Ratcheting</subfield>
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    <subfield code="a">Mohammad M. Megahed</subfield>
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    <subfield code="a">Chahinaz A. Saleh</subfield>
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    <subfield code="a">Sahour N. Sayed</subfield>
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