This paper develops the equilibrium equations describing flexoelectric effect in soft dielectrics under large deformations. Previous works have developed related theories using a coupling tensor of mixed material-spatial character. Here, we formulate model terms completely defined material frame, with same symmetries small-strain flexocoupling and leading naturally to objective polarization fie...

With the advancements in newer electronic technologies, need for power/battery charges has risen exponentially. Harvesting renewable energy, which can be subsequently used to power these devices is solution consumption problem. In this work, we develop a piezo electric generator, produces energy when person walks on it or presses with his/her feet. This generated then light up LEDs mounted floo...

piezoelectric actuators are widely used in micro manipulation applications. however hysteresis nonlinearity limits accuracy of these actuators. this paper presents a novel approach utilizing a piezoelectric nano-stage as slave manipulator of a teleoperation system. the prandtl-ishlinskii (pi) model is used to model actuator hysteresis in feedforward scheme to cancel out this nonlinearity. a pas...

Availability is one of the most frequently specified quality attributes for computerized systems and the computation of availability requires knowledge about the reliability of the system. Although much research has been devoted to software system reliability, much work remains to be done in identifying ways to predict reliability of assemblies of components. We are designing an experiment for ...

Piezo bimorph mirrors are versatile active optics used on many synchrotron beamlines. However, many bimorphs suffer from the `junction effect': a periodic deformation of the optical surface which causes major aberrations to the reflected X-ray beam. This effect is linked to the construction of such mirrors, where piezo ceramics are glued directly below the thin optical substrate. In order to ad...

As extreme events increase in frequency, flow-disrupting large-scale structures become ever more susceptible to collapse due local scour effects. The objective of this study was validate the functionality passive, flow-excited sensors that can continue operate during an event. sensors, or piezo-rods, feature continuous piezoelectric polymer strips embedded within and along length slender cylind...

In magnetic disk drive actuators, the application of piezo electric material can be used to re ne and accomplish track following in (extremely) high track density magnetic data storage. In this paper the results on the modeling and control of a piezobased milli-actuator are presented. The modeling is done on the basis of a least squares curve tting of an estimated frequency response and taking ...