Dielectric gradient components have advantages in electric field mitigation and insulation improvement. In this paper, we propose a fabrication method for adaptive dielectric using situ AC field, including the mechanism corresponding operational procedures industrial applications. Based on polarisation self-assembly effect of filler particles liquid matrix, chain-like structure high strength region is constructed to enhance local permittivity mitigate maximum spatial field. The basin...

The electric field grading of dielectric permittivity gradient devices is an effective way enhancing their insulation properties. in situ field-driven assembly advanced method for the fabrication with adaptive gradients; however, there no theoretical guidance design. In this study, analytical model a time constant developed to determine transient uncured composites under applied AC field. This based on optical image and monitoring, which avoids direct processing complex electrodynamics. For...

Abstract Electric-field grading by dielectric permittivity gradient devices is an effective way of enhancing the insulation performance. In situ electric-field-driven assembly advanced method for fabrication insulating with adaptive gradients; however, there no theoretical guidance its use in design. We develop analytical model spatiotemporal uncured-composite device AC electric field and investigate coupling effects between assisted rod-like filler self-assembly three devices: a pin-flat...

This research investigates the complex temperature distribution and fatigue behavior of single film-cooling holes manufactured by lasers with different pulse widths in a real flow field. The aerodynamic heat transfer characteristics using were analyzed through laser drilling experiments, conjugate simulations, crystal plasticity finite element methods. study investigated relationship between changes geometric accuracy corresponding fields during process. Additionally, effects structural...

The electric field grading of dielectric permittivity gradient devices is an effective way enhancing their insulation properties. in-situ field-driven assembly advanced method for the fabrication with adaptive gradients, however, there no theoretical guidance design. In this work, analytical model a time constant developed to determine transient uncured composites under applied AC field. This based on optical image and monitoring, which avoids direct processing complex electrodynamics. For...

Dielectric gradient components have advantages in electric field mitigation and insulation improvement. In this paper, we propose a fabrication method for adaptive dielectric using situ AC field, including the mechanism corresponding operational procedures industrial applications. Based on polarization self-assembly effect of filler particles liquid matrix, chain-like structure high strength region is constructed to enhance local permittivity mitigate maximum spatial field. The basin...

Along with the development of Long term evolution (LTE) communication system, higher linearity and efficiency base station power amplifier required. Although, Conventional Doherty can't meet this requirement. For first time, This is use Envelope tracking (ET) technology used to dynamically control gate voltage peak amplifier: at low input, supplied peaking amplifier, aiming improve efficiency: on other hand, high obtain efficiency. Compared traditional new design could without decreasing In...

Electric field distribution along gas–solid interfaces determines the reliability of insulating components. However, dielectric gradient component prepared by conventional method is considered to only control internal electric field, but not beneficial surface insulation, especially when electrode at an acute angle from surface. The aim this study clarify that meta-structure based on tensor rotation constructed field-induced assembly (EIA) could improve insulation. self-assembly and...

Nonlinear conductivity composites have a broad application prospect in high voltage power systems. But the filling content will be harmful to overall properties of composites, which limits scenarios. To realize nonlinear at low threshold, we introduce electric field induction method prepare state liquid prepolymer. In this work, prepared silicone rubber (LSR) samples filled with different contents tetrapod zinc oxide whiskers (T-ZnOw) and carbon fiber (CF). Samples were without 150 V/mm AC...