Shakedown boundaries of locally thinned-wall 90 degree pipe bends subjected to steady internal pressure and cyclic in plane bending loads / Amr Ahmed Foad Fahmy Oda ; Supervised Mohammad M. Megahed , Hany F. Abdalla
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- نطاقات أحمال حد القلقلة لأكواع المواسير القائمة التى تعانى من ترقق محلى فى جدرانها تحت تأثير الضغط الثابت و أحمال الثنى المتكررة [Added title page title]
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قاعة الرسائل الجامعية - الدور الاول | المكتبة المركزبة الجديدة - جامعة القاهرة | Cai01.13.13.M.Sc.2015.Am.S (Browse shelf(Opens below)) | Not for loan | 01010110068913000 | ||
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مخـــزن الرســائل الجـــامعية - البدروم | المكتبة المركزبة الجديدة - جامعة القاهرة | Cai01.13.13.M.Sc.2015.Am.S (Browse shelf(Opens below)) | 68913.CD | Not for loan | 01020110068913000 |
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Cai01.13.13.M.Sc.2015.Ah.M Mechanical performance of a new dynamic accumulator / | Cai01.13.13.M.Sc.2015.Ah.M Mechanical performance of a new dynamic accumulator / | Cai01.13.13.M.Sc.2015.Am.S Shakedown boundaries of locally thinned-wall 90 degree pipe bends subjected to steady internal pressure and cyclic in plane bending loads / | Cai01.13.13.M.Sc.2015.Am.S Shakedown boundaries of locally thinned-wall 90 degree pipe bends subjected to steady internal pressure and cyclic in plane bending loads / | Cai01.13.13.M.Sc.2015.He.N Novel synthesis of nanolubricant by ARC discharge process / | Cai01.13.13.M.Sc.2015.He.N Novel synthesis of nanolubricant by ARC discharge process / | Cai01.13.13.M.Sc.2015.Kh.D Development of a variable geometric volume cardiac action hydraulic PUMP / |
Thesis (M.Sc.) - Cairo University - Faculty of Engineering - Department of Mechanical Design and Production
The current research utilizes a direct non cyclic technique to generate elastic shakedown boundaries for locally thinned wall long radius pipe bends. Wall thinning is located once at intrados, once at extrados and once at crown. The pipe bend is subjected to the simultaneous effect of steady internal pressure spectrum and cyclic in plane bending moments. A parametric study is conducted to investigate the effect of thinning depth and thinning location under both cyclic in-plane closing and opening modes of bending on shakedown boundaries. Assessment procedures adopted in the well known fitness for service standard, API 579 1 / ASME FFS 1, to assess structural integrity of defective pipe bends against fatigue and ratcheting failures are compared with the results of the direct non-cyclic technique
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