هندسة المباني

 للكاتب : S. BENSAADA Laboratoire des matériaux semi-conducteurs et métalliques (LMSM) Université Mohamed Khider BP 145 – 07000 BISKRA (ALGERIE) Corresponding author: ABSTRACT The particular interest of this work is to study the influence of the plastic deformation on the mode of the precipitation reaction in Ni-1, 4 at. % In alloy. This alloy is characterized by a discontinuous precipitation …

للكاتبين : G. Abd El-Nasser, A. El-Baghdady, H. Abd El-Hafez Faculty of Engineering, Suez canal University, Port said ABSTRACT Friction stir welding (FSW) is a relative new welding technique and has emerged as one of the most important solid state joining process that can have enormous potential for applications in many major industrial applications such as aerospace, automotive and shipbuilding. …

للكاتب : R. ATMANI1, A. BRIMA1, R. ASKOVIC2 1Département de Mécanique, Université de Biskra , 07000 Biskra, Algérie. 2Laboratoire de mécanique des fluides, Université de Valenciennes, 59326 Aulnoy lez Valenciennes, France. ABSTRACT In the case of three-dimensional flows, the separation can be defined in more than one way. Discussions of three-dimensional boundary layer separation in the literature have attempted to fined …

للكاتب : Mohamed E. Ali Mechanical Engineering Department, King Saud University, ABSTRACT experimental investigations have been reported on steady state natural convection from the outer surface of horizontal ducts in air. Five ducts have been used with aspect ratios (Γ= duct height/duct width) of 2, 1 and 0.5. The ducts are heated using internal constant heat flux heating elements. The …

للكاتب : Hashem F. El-Labban Production Engineering Dept., Alexandria University, Alexandria, Egypt ABSTRACT A conventional laser surface melting treatment was applied to steel specimens of two different compositions, an alloy steel (0.76wt.% C, 0.76wt.% Si, 1.5wt.% Mn,..) and a high speed steel ( 0.94wt.% C, 4.42wt.% Cr, 5.43wt.% Mo, 2.17wt.% V, 3.85wt.% W, 0.30wt.% Si, .% , 0.34wt.% Mn,..), using …

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