A5100699629- Microstructure and mechanical properties
- High-Velocity Impact and Material Behavior
- Advanced machining processes and optimization
- Intermetallics and Advanced Alloy Properties
- Advanced Surface Polishing Techniques
- Advanced Machining and Optimization Techniques
- Fusion materials and technologies
- Metallic Glasses and Amorphous Alloys
- Fatigue and fracture mechanics
- Ion-surface interactions and analysis
- Electromagnetic wave absorption materials
- High Temperature Alloys and Creep
- Tracheal and airway disorders
- Nuclear Materials and Properties
- Esophageal Cancer Research and Treatment
- Aluminum Alloys Composites Properties
- Advanced Sensor Technologies Research
- Advanced materials and composites
- Microstructure and Mechanical Properties of Steels
- Material Properties and Failure Mechanisms
- Nanocluster Synthesis and Applications
- Non-Destructive Testing Techniques
- Advanced Materials Characterization Techniques
- Inorganic Chemistry and Materials
- Laser-induced spectroscopy and plasma
Tsinghua University
2024
Hunan University of Arts and Science
2016-2023
Fudan University
2021
Shanghai University of Engineering Science
2020
First Affiliated Hospital of Xi'an Jiaotong University
2017
Hunan University
2014-2015
Georgia Institute of Technology
2010-2014
Xi'an Jiaotong University
2009
Thermal insulation and temperature control are extremely important in numerous human activities. Traditional aerogels with low thermal conductivity known to facilitate good insulation. Boron nitride (BN) consist of...
A sensor module that integrates a thin film polyvinylidene fluoride (PVDF) piezoelectric strain and an in situ data logging platform has been designed implemented for monitoring of the feed transverse forces peripheral end milling process. The module, which is mounted on tool shank, measures dynamic strain(s) produced logs into on-board card later retrieval. close proximity between signal source PVDF sensor(s) minimizes attenuation distortion along transmission path provides high-fidelity...
This paper presents a model-based computationally efficient method for detecting milling chatter in its incipient stages and frequency estimation by monitoring the cutting force signals. Based on complex exponentials model dynamic chip thickness, regeneration effect is amplified isolated from signal early detection. The proposed independent of conditions. With aid one tap adaptive filter, shown to be capable distinguishing between transients forces arising sudden changes workpiece geometry...
The mechanical properties of Ni/Ni3Al monocrystal nanophases with varying temperatures, strain rates, and phase sizes have been studied using molecular dynamics simulation. simulation results show that the primary deformation mechanisms in were slip bands antiphase boundaries at room temperature. studies on effects temperature showed yield strain, strength, elastic module decreased as increased. However, influences rate size high led to increase stress, had no significant influence maximum...
Simultaneous magnetic and electric deflection measurements of rhodium clusters (Rh(N), 6 ≤ N 40) reveal ferromagnetism ferroelectricity at low temperatures, while neither property exists in the bulk metal. Temperature-independent moments (up to 1 μ(B) per atom) are observed, superparamagnetic blocking temperatures up 20 K. Ferroelectric dipole on order 1D with transition 30 K observed. Ferromagnetism coexist measured size range, size-dependent variations that tend be anticorrelated range n =...
Thin-film polyvinylidene fluoride piezoelectric sensors have long been recognized as a promising alternative to traditional metal foil strain gauges in applications where only dynamic or quasistatic signals are of interest. Compared gauges, feature high sensitivity, range, and broad frequency bandwidth. However, transverse sensitivity the sensor is higher than that gauge, making it more difficult isolate particular component deformation mode when host structure under complex loading. In...
A sensor module that integrates a thin film PVDF piezoelectric strain and wireless data processing/transmitting platform has been designed implemented for monitoring of the feed force in slot end milling process. The module, which is mounted on tool shank, measures dynamic produced transmits wirelessly to receiver connected acquisition computer. first principles model based Euler-Bernoulli beam theory constitutive equations material used transform obtained into acting operation. signal found...
This paper presents the design, fabrication, and characterization of a compact current sensor based on magnetostrictive composites resistance strain gauges. Firstly, we designed three kinds sensors with different structures, in which shape giant material (GMM) was cuboid, cylindrical, semi-cylindrical. A set finite element method (FEM) simulations were performed to qualitatively guide design prototypes sensor. It determined that most ideal GMM Secondly, Terfenol-D (TD) powder epoxy resin...
This paper presents a model-based computationally efficient method for detecting milling chatter in its incipient stages. Based on complex exponentials model the dynamic chip thickness, regeneration effect is amplified and isolated from cutting force signal early detection. The proposed independent of conditions. With aid one tap adaptive filter, also found to be able distinguish between transients forces due sudden changes workpiece geometry tool entry/exit. experimentally validated.
The mechanical properties of the α-SiO2 crystal are studied by molecular dynamics method with Tersoff potential function. results show that goes through elastic deformation, plastic deformation and fracture in process uniaxial loading at room temperature. is from phase transformation to amorphous deformation. And also studying influence temperature on tensile α-SiO2, it finds yield strength modulus decrease gradually as increases. Moreover, higher temperature, lower stress strain; easy be...
This paper presents a novel non-rigid point set registration method that is inspired by unsupervised clustering analysis. Unlike previous approaches treat the source and target sets as separate entities, we develop holistic framework where they are formulated centroids members, separately. We then adopt Tikhonov regularization with an $\ell_1$-induced Laplacian kernel instead of commonly used Gaussian to ensure smooth more robust displacement fields. Our formulation delivers closed-form...
Received 5 January 2015DOI:https://doi.org/10.1103/PhysRevLett.114.039904© 2015 American Physical Society
The Gibbs free energy of formation, ∆Ga, the amorphous phase Cu–Zr-rich Cu–Zr–Al bulk metallic glasses (BMGs) has been calculated over a broad composition region to re-evaluate their thermal stability, based on efficient cluster packing model. It is found that Al–Zr clusters have an important effect stability BMGs with same Cu/Zr content ratio. crystallisation involves both and Cu–Zr clusters. results could be useful for predicting understanding underlying mechanism multicomponent glasses.
The mechanical properties of irradiated iron are studied by molecular dynamics simulation. initial models with the energy primary knocked-on atoms (PKA) 10[Formula: see text]keV at 100, 300, 500 and 600 K, then all subjected to tensile test. results reveal that changed compared un-irradiated iron, yield stress strain decrease after irradiation, irradiation causes hardening micro-structure low temperature high temperature, but it in softening structure room temperature. plastic reduces for...