للكاتب : Dr. Mustafa Ahmed Rijab /assistant prof. Technical Institute -Baquba / Mechanical Department Abstract The aim of this research is to investigate the effect of addition of pure titanium ( 0.05 and 0.1 ) % on the microstructure of AL – 12% Si alloy , And the effect of long term homogenization (552 Co ) on the microstructure development …

للكاتب : M. M. Kesba Faculty of Engineering, EL-Minia University. EL-Minia, Egypt Abstract In this study face milling operations were carried out on mild steel to indicate the effect of cutting parameters on surface roughness. It was found that surface roughness carbide tips were reduced by using round carbide tips. By using two round carbide tips having nose radii of …

 للكاتب : Mustafa Ahmed Rijab Al-Najar Mechanical Department – Technical Institute–baquba- Iraq ABSTRACT The result of this research work showed that the increase of the cooling rate will increase the amount of martensite that will reduce the weldability of the dual phase steel . the low percentage carbon enables water to be as a suitable quenching medium for production of …

للكاتبين : DR. JALAL M. JALIL DR. AHMED A. M. SALEH University Of Technology University Of Technology Baghdad, Iraq ABSTRACT A numerical study on airflow inside a large space with door opening, with and without interaction air curtain was carried in this paper. The low Reynolds k-ε equation turbulent model is used to capture the fluid flow and heat transfer …

للكاتب : ياسر محمد يحيى درجة ماجستير في الهندسة الميكانيكية ـ كلية الهندسة ـ جامعة الازهر 2002 الادارة العامة لجودة الركوب ـ شركة النصر لصناعة السيارات 1996

للكاتبين : M.M.I. Hammouda1, A.A. Abdel-Alhady2, A.S. Fayedc, H.E.M. Sallam3 1 Mechanical Eng. Dept., University of Engineering and Technology, Taxila, Pakistan 2 Mechanical Design Department, Mataria, Helwan University, Cairo, Egypt. 3 Materials Engineering Department, Zagazig University, Zagazig, Egypt ABSTRACT 2-D elastic-plastic finite element analysis was utilized to simulate cyclic crack tip deformation of short cracks emanating from elliptical oblique notches. …

للكاتبين : M.M.I. Hammouda1, A.A. Abdel-Alhady2, A.S. Fayedc, H.E.M. Sallam3 1 Mechanical Eng. Dept., University of Engineering and Technology, Taxila, Pakistan 2 Mechanical Design Department, Mataria, Helwan University, Cairo, Egypt. 3 Materials Engineering Department, Zagazig University, Zagazig, Egypt ABSTRACT Notch elastic affected zone and the path of crack emanating from a single inclined elliptical edge notch are studied in this …

للكاتبين : Mahdi M. M. El-arini , Nehad S. El-dean Electrical Power Dep, Faculty of Engineering,. Zagazig University ABSTRACT : Due to the environmental concerns that arise from the emissions produced by power plants, classical economic dispatch to minimize the total fuel cost, can no longer be considered alone. Thus, by environmental dispatch, emissions can be reduced by dispatch of …

 للكاتبين : A. M. Hemeida, G. Shabib, Y. A. Mobarak, and M. M. Hussien Electric Engineering Department, High Institute of Energy, South Valley University, Aswan, Egypt ABASTEACT The occurrence of voltage instabilities or voltage collapses depend on the duration of the persistence of the fault and on the type of fault, some faults lead to voltage instabilities, others lead to …

 للكاتبين : A. M. Hemeida, G. Shabib, Y. A. Mobarak, and M. M. Hussien Electric Engineering Department, High Institute of Energy, South Valley University, Aswan, Egypt ABASTRACT This paper, we study the effect of exciter control system parameters on fault duration which causes initiation of voltage instability and voltage collapses are accomplished. The effect of each of the excitation control …