In order to realize the collection of micro or small vibration energy, a micro-power generator based on two piezoelectric Macro Fiber Composite (MFC) films is proposed. The consists double MFCs type vibrator and displacement amplifying mechanism, which can achieve output high energy density. design process this kind presented. Based LabVIEW platform NI Data Acquisition (DAQ) card, voltage acqui...

Noncontact transportation of small particles around a circular trajectory was investigated. A circular aluminum plate with a piezoelectric ring was employed as a vibrating plate. On the basis of finite element analysis (FEA) calculations, the electrodes of the piezoelectric ring were divided into 24 pieces to generate a flexural vibration mode with one nodal circle and four nodal lines at the r...

In view of the limitations traditional feeder driving mode in bulk material conveying, a new scheme ultrasonic vibration feeding device with double symmetrical axis structure is proposed based on existing traveling wave conveying device. The outer sides upper and lower straight beam sections vibrator contain convex tooth structures, piezoelectric ceramic sheets are pasted inner side; Based prin...

Stimuli responsive hydrogels may be promising materials for shape transforming structures due to their ability to deform significantly in response to an environmental stimulus without the need for external power. It is well-known that by laminating swelling hydrogels and non-swelling flexible materials, such as inert elastomers, bending actuation can be achieved. In this work, we report an impr...

Vibration power and amplitude are essential factors in ultrasonic drawing processes, especially for difficult-to-draw materials like titanium and its alloys. This paper presents a new composite power-superimposed ultrasonic vibrator for wire drawing which was driven by three separate ultrasonic transducers. The transducers were uniformly distributed around the circular cross section of the vibr...

The purpose of this study was to examine the effect connecting beam main structure considering viscoelastic property, which affects rate electrical energy harvested from piezoelectric patch connected aluminum beam. In research, connection vibrator considered obtain more accurate results. Viscoelastic material decreases amount stress and strain along as well path due its softness; thus, less pot...

Vibrator, as a crucial vehicle of oil and gas exploration, is challenged by the complex terrains. The probability of rollover accident is therefore high in bumpy terrain in which the drivers’ life is seriously threatened. Finite element numerical analysis was used to study the injury of the driver’s head, neck and chest in the rollover accidents of domestic KZ-28 type vibrator on different cond...

OBJECTIVE The aim of this study was to test a new portable vibrator for plaster pouring (developed for this purpose), comparing the effect of its use on the accuracy of working cast of implant-supported restorations to the conventional vibrator. MATERIAL AND METHODS From a master cast with 2 implants, 30 transfer moldings were made randomly and divided into three groups: group I (GI): pouring...

This paper studies the vibration energy harvesting characteristics of poled barium titanate (BT) unimorph cantilevers both analytically and experimentally. The unimorph cantilever consists of the BT layer and Cu shim, and the BT layer has sensing, grounding and driving electrodes. The output voltage of the cantilever excited by bending vibration was predicted by three dimensional finite element...