للكاتبين : F. Shehata, M. Abdelhameed and A. Fathy Department of Mechanical Design and Production Engineering, Faculty of Engineering, Zagazig University, ABSTRACT A wide range of particulate metal matrix composites (PMMC) of alumina and aluminum powders was fabricated using powder metallurgy techniques followed by extrusions at various extrusion ratios. The alumina particles of size 37μm were used to produce PMMC …

للكاتبين :  Keshk A. B*, Imam M. M** *-Radiation Engineering Department National Center for Radiation Research and Technology.  **-Atomic Energy Authority, Cairo Egypt. National Center for Nuclear Safety and Radiation Control. ABSTRACT Many of Industrial radiation facilities using Co-60 irradiation are used in many countries in development for sterilization of medical products and pharmaceuticals, with a small numbers being used …

 للكاتب : HUSSEINY I . GAFFER Production Engg .& Mechanical Design Dept., Faculty of Engineering , Menoufia University Shebin El-Kom, EGYPT. ABSTRACT : This paper presents an experimental investigation of rotating machinery malfunction diagnostics using vibration data in correlation with operational process data .The advantages of vibration monitoring systems as a part of preventive /predictive maintenance programs are emphasized .Some …

للكاتبين : R.Y. Sakr1 and T.A. Ahmed2 1 Mech. Eng. Dept., Shoubra Faculty of Engineering, Benha University, Egypt 2 Mech. Power Eng. Dept., Faculty of Engineering , Cairo University, Egypt ABSTRACT This paper presents a numerical study that concerning the effect of surface radiation on natural convection cooling of four discrete isoflux heaters flush-mounted on a vertical wall of an …

للكاتب : Mohamed Mostafa El-Salmawy * Post graduate student Faculty of Engineering, Cairo University ABSTRACT: This paper presents a review on the defects of flat- rolled ferrous and nonferrous strips including their mechanics and origins and how to correct them. The paper illustrates various shape defects in flatrolled ferrous and nonferrous strip, some simple such as coil set, cross bow, …

 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 …