December 2010

Behavior of a radio channel in the WLL (Wireless Local Loop)

  The local loop can be of two kinds, the local loop with copper wires and the local loop that use radio technology. Under certain conditions, the wireless Local Loop (WLL) can be an alternative more interesting than the copper local loop. We study in this paper the behavior of a radio channel and the multipath effect in a WLL transmission.   Key words: Wireless Local Loop (WLL), radio...

Author(s):   S. Boualleg and B. Haraoubia      

December 2010

Non-axisymmetric dynamic response of imperfectly bonded buried fluid-filled orthotropic thin cylindrical shell due to incident compressional wave

  The main aim of this paper is to assess and compare the relative importance of the effects of considering the fluid presence and the bond imperfection while evaluating the non-axisymmetric dynamic response of an imperfectly bonded empty as well as fluid filled orthotropic thin cylindrical shell buried under soil and excited by compressional wave (P-wave). While applying thin shell theory, the effect of shear...

Author(s):   Rakesh Singh Rajput, Sunil Kumar, Alok Chaube and J. P. Dwivedi      

December 2010

The need for the incorporation of boundary condition prediction in real life layups using Drape simulation software tool

  The focus on the contour sensitive part mating boundary conditions development, using software in the fabric deformation during the hand layup and automation of press-forming process is important in the development of composite materials. During the real life layup production processes, the fabric directional changes produced wrinkles and voids in the part produced. This directional changes are not really...

Author(s):   T. A. Adegbola, I. Aghachi and R. Sadiku