Vivek Gupta

TL;DR: In this paper, the authors present various optimization criteria used by researchers for optimal placement of piezoelectric sensors and actuators on a smart structure, including modal forces/moments applied by actuators, maximizing deflection of the host structure, minimizing control effort/maximizing energy dissipated, maximizing degree of controllability, and minimizing degree of observability.

TL;DR: In this paper, a control law for active structural vibration control using piezoelectric patches at elevated temperatures is derived and experimentally verified using augmented constitutive equations, which includes the temperature dependence of piezolectric stress coefficient (e31) and permittivity.

TL;DR: In this article, a finite element model of a smart two-dimensional plate instrumented with piezoelectric patches is derived using Hamilton's variational principle, and coupled equations of motion are uncoupled using modal analysis.

TL;DR: In this article, a review paper on mathematical modeling of actively controlled piezo smart structures is presented, which discusses the techniques to: (i) write the equations of motion (ii) implement sensor-actuator design (iii) model real life environmental effects and, (iv) control structural vibrations.

TL;DR: The present work involves the synthesis and biological evaluation of 4, 5 disubstituted imidazo [2, 1-b] benzothiazole derivatives and the compounds 6a1, 6a2, 6 a3, 6b1 and 8a1 exhibited good antimicrobial activity against all the strains.