Search for dissertations about: "Ahmed El-Bahrawy"

Found 2 swedish dissertations containing the words Ahmed El-Bahrawy.

2. 1. Guided Elastic Waves along Periodically Corrugated Structures

   Author : Ahmed M. A. El-Bahrawy; Chalmers tekniska högskola; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY;

   Abstract : The present thesis consider time-harmonic surface and guided elastic waves propagating along periodically corrugated structures. The problems discussed deal with various configurations where the surfaces are sinusoidally - singly or doubly - periodic, and the interest is focused on investigating the roots of the dispersion relations and in particular the stopband and cross-over resonances. READ MORE

4. 2. Active Engine Vibration Isolation using Feedback Control

   Author : Claes Olsson; Ahmed El-Bahrawy; Lennart Ljung; Linköpings universitet; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY;

   Abstract : Broad band active vibration isolation of automobile engine using linear and nonlinear feedback control is considered. The objective is to reduce the forces transmitted to the chassis and body, and, thus, reducing vibrations and structure borne noise inside the vehicle compartment when the engine is subjected to different excitations. READ MORE