000			02247cam a2200337 a 4500
003			EG-GiCUC
005			20250223031506.0
008			160514s2015 ua dh f m 000 0 eng d
040			_aEG-GiCUC _beng _cEG-GiCUC
041	0		_aeng
049			_aDeposite
097			_aM.Sc
099			_aCai01.13.13.M.Sc.2015.Am.S
100	0		_aAmr Ahmed Foad Fahmy Oda
245	1	0	_aShakedown boundaries of locally thinned-wall 90 degree pipe bends subjected to steady internal pressure and cyclic in plane bending loads / _cAmr Ahmed Foad Fahmy Oda ; Supervised Mohammad M. Megahed , Hany F. Abdalla
246	1	5	_aنطاقات أحمال حد القلقلة لأكواع المواسير القائمة التى تعانى من ترقق محلى فى جدرانها تحت تأثير الضغط الثابت و أحمال الثنى المتكررة
260			_aCairo : _bAmr Ahmed Foad Fahmy Oda , _c2015
300			_a159 P. : _bcharts , facsimiles ; _c30cm
502			_aThesis (M.Sc.) - Cairo University - Faculty of Engineering - Department of Mechanical Design and Production
520			_aThe 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
530			_aIssued also as CD
653		4	_aPipe bend
653		4	_aShakedown
653		4	_aThinning
700	0		_aHany Faik Abdalla , _eSupervisor
700	0		_aMohammad Mohammad Megahed , _eSupervisor
856			_uhttp://172.23.153.220/th.pdf
905			_aNazla _eRevisor
905			_aSamia _eCataloger
942			_2ddc _cTH
999			_c56417 _d56417