A5032545822- Advanced Surface Polishing Techniques
- Advanced machining processes and optimization
- Advanced Machining and Optimization Techniques
- Piezoelectric Actuators and Control
- Indoor and Outdoor Localization Technologies
- Advanced Welding Techniques Analysis
- Electronic Packaging and Soldering Technologies
- Ultrasonics and Acoustic Wave Propagation
- Wireless Power Transfer Systems
- Underwater Vehicles and Communication Systems
- Engineering Technology and Methodologies
- Underwater Acoustics Research
- Material Properties and Applications
- Iterative Learning Control Systems
- Flame retardant materials and properties
- Advanced Measurement and Metrology Techniques
- Advanced Adaptive Filtering Techniques
- Ultrasound Imaging and Elastography
- Laser-Plasma Interactions and Diagnostics
- Micro and Nano Robotics
- Polymer Nanocomposites and Properties
- Lattice Boltzmann Simulation Studies
- Electrical and Bioimpedance Tomography
- Generative Adversarial Networks and Image Synthesis
- Manufacturing Process and Optimization
Harbin Institute of Technology
2007-2024
Tianjin University of Technology
2024
Xi'an University of Science and Technology
2023
Universidad del Noreste
2004
The electrical packaging for high power devices such as IGBT or MOSFET is achieved by heavy aluminum ultrasonic wire bonding. In this process, the amplitude stability of transducer determines bonding quality, which demands more accuracy in resonant frequency tracking (RFT) and constant control (CAC). investigation, we proposed a vector based (VRFT) (VCAC) to transducer. current dynamic branch was conducted calculating voltage Small signal model established applied into RFT CAC. A strategy...
The flame-retardant micro-encapsulated sepiolite (MSEP) was successfully prepared by sol-gel method. Fourier transform infrared, X-ray photoelectron spectroscopy, scanning electron microscopy, and energy dispersive spectroscopy were utilized to prove that encapsulated. Then, the mechanical properties, flame retardance, smoke suppression, pyrolysis characteristics of silicone rubber foam (SiFs) with MSEP zinc borate (ZB) analyzed. results indicated tensile compressive properties SiFs could...
Rotary ultrasonic machining (RUM) is a superior technology to machine hard and brittle materials. Traditionally, the compensation optimization for RUM system limited single resonant frequency. This article presents novel double approach impedance frequency regulations of via multiobjective genetic algorithm (MOGA) aiming achieve resonance monitor process in real time. For this, we first establish model rotary holder (RUH) by adopting T-type circuit that includes comprehensive electromagnetic...
Abstract Two kinds of Al‐based metal‐organic frameworks (Al‐MOFs), MIL‐53(Al), and MIL‐96(Al), were synthesized by the solvothermal method then characterized using SEM, XRD, FTIR. The Al‐MOFs halloysite nanotubes (HNTs) blended added to silicone rubber foams (SiFs). mechanical properties flame retardancy composites tested analyzed universal tensile tester, limiting oxygen index (LOI), vertical combustion cone calorimeter, TG, EDS, results show that have high crystallinity purity. Compared...
Abstract Rotary ultrasonic machining (RUM) is an effective solution to cut, grind, or drill the advanced brittle hard materials. Contactless rotary transformer, with advantages of high-power transmission efficiency and reliability, a potential structure transmit electric power in RUM. In this study, impedance model holder (RUH) established find that there exist deviations for resonant frequency between RUH transducer, indicating without compensation transducer cannot precisely its own by...
Rotary ultrasonic machining (RUM) has been proven to be a suitable technology for micro-nano precision manufacturing hard and brittle ceramics/composite materials. However, the working frequency of transducer in current RUM is range from 20 kHz 30 kHz. Moreover, tool tightened by an elastic chuck, which low clamping precision, high radial run-out, unstable energy transmission. In this paper, we developed novel heat shrinkable with 60 equivalent circuit finite element method (FEM). An...
With the advantages of non-contact, compatibility, no chemical effect and safety, acoustic levitation object has great potential to apply in chemistry, biology, medicine field micro robots. Suspension large particle higher than half wavelength( <inline-formula xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink"> <tex-math notation="LaTeX">$0.5\lambda $ </tex-math></inline-formula> ) sound wave, is a challenge technology micro-nanoscale manipulation. An...
Mill-grinding experiments were carried out on SiCp/Al to investigate effects of mill-grinding parameters and grinding wheel machined surface roughness in this paper. The topography was also analyzed. Experimental results show that increases with increasing feed rate the depth mill-grinding. effect speed is low. reveals many defects. fine grit diamond can reduce decrease defect. Compared vitrified bonded electroplated wheels used experiment, resin-based produces a better surface.
Unlike terrestrial radio, the speed of sound in ocean is relatively slow, which results mobile underwater M-ary spread spectrum communication typically exhibiting significant and variable multipath effects along with strong Doppler effects, leading to rapid carrier phase shifts received signal that severely impact decoding accuracy. This study aims address issue caused by time-varying during M-SS communication. paper innovatively proposes a method for updating matched filters based on...