In this paper excitation characteristics of the Liquid Crystal (LC) capacitive chemical and biological sensor are examined and the optimum frequency and voltage range for the sensor interface are introduced. Interdigitated capacitor has been used for the sensor capacitance measurement and two different molecular orientations, homeotropic and homogenous, have been considered. The LC sensor capac...

This paper presents the study of gluing thermal parameters by periodic methods. A classical gluing is featured by a thermal resistance in between two identical layers. A study of phaselag versus excitation gives an estimation of the gluing thermal parameters . A 1D model of simulation was the base for a ODE (Optimal Design of Experiments) global methodology. It is shown that front face configur...

In a previous work the authors described fast high-fidelity computer model for acoustic scattering from multi-layered elastic spheres. This is now extended with scaling strategy significantly mitigating problem of overflow and thus expanding useful frequency range model. Moreover, new boundary conditions loads are implemented. Most important fluid–fluid solid–solid couplings, which allow comple...

the suppression of the regenerative chatter phenomenon in turning process via the variation of the frequency and amplitude of the spindle motor excitation is carried out in this research. a programmable inverter is employed for variable periodic excitation of the spindle motor. a set of turning experiments is designed and performed on a number of conical work pieces both in constant spindle spe...

Three-dimensional tank in smooth tank is of concern in various engineering applications. Sloshing waves in moving tanks have been studied numerically, theoretically and experimentally in past several decades and many significant phenomena have been considered in those studies, especially the linear and nonlinear effects of sloshing wave with inviscid or viscid liquid in a tank. The reported stu...

Multi-resolution approach is used to derive homogenized (large scale) formulation for propagation of waves in complex laminates. Basic entities such as boundary conditions, spatial and temporal spectrum (eigenvalues and resonances), Wronskian, modal expansions, and Green function representations associated with the homogenized formulation are discussed. The relations between them and their gene...