هندسة المباني

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 …

 للكاتب : Al-Zoubi Q. Electronic Engineering Department, Hijjawi faculty for engineering technology Yarmouk university, Irbid-Jordan ABSTRACT In this work induced eddy currents in thin conductive systems with slots is investigates. The effect of the width and geometrical layout of the slots on the electromagnetic filed is investigated. It is found that for high frequencies, the our system is applicable. However, …

 للكاتبين : Malika NEZAR, R.Abdessemed1 , LH Mouss1 , M.E.H. Benbouzid2 1Electrical engineering department – Faculty of Engineering Sciences – University of BATNA, ALGÉRIA 2 IUT BREST – GEII department – university of BREST ABSTRACT – With considering the role of the information in the biologic nervous system and the importance of its processing time, realised in the frame of …

 للكاتبين : A. B. Kotb1, Ibrahim M. H. Saad2 , F. M. El-Lithy1, and M. Helmy A. Raouf2 1Faculty of Engineering, Al-Azhar University, Cairo, Egypt 2National Institute of Standards (NIS), Cairo, Egypt ABSTRACT All of the capacitance practical applications require precision measurements of capacitance. To increase calibration accuracy of capacitance, consideration of the accuracy limitations is composed by the connection …

 للكاتب . A. E. Mansour Electrical Engineering Department, Faculty Of Engineering, Al-Azhar University ABSTRACT This paper presents, for large-scale power systems, a distributed bad-data pre-cleaning (BDPC)technique with subsequent hierarchical recursive static state estimation (RSSE) method when the meter placement used is optimal. The optimality here means that the meter configuration does satisfy the necessary and sufficient conditions for the detection …

 للكاتب : Ahmed E. Mansour Electrical Engineering Department, Faculty of Engineering , University of AL-Azhar ABSTRACT In this paper, applications of an optimal meter configuration system,(introduced in previous work for the author), on the different electric networks (AEP 14-bus system, AEP 30-bus system, and 34-bus network) will be presented. The meter configurations must satisfy the necessary and sufficient conditions for …