A5100355927- Optical measurement and interference techniques
- Image Processing Techniques and Applications
- Advanced Vision and Imaging
- Advanced Measurement and Metrology Techniques
- Optical Systems and Laser Technology
- Shape Memory Alloy Transformations
- Advanced Measurement and Detection Methods
- 3D Surveying and Cultural Heritage
- Mechanical Behavior of Composites
- High Entropy Alloys Studies
- Particle accelerators and beam dynamics
- Adaptive optics and wavefront sensing
- Surface Roughness and Optical Measurements
- Maritime Navigation and Safety
- Concrete and Cement Materials Research
- Advanced Optical Sensing Technologies
- Superconducting Materials and Applications
- Inertial Sensor and Navigation
- Image and Object Detection Techniques
- Titanium Alloys Microstructure and Properties
- Robotics and Sensor-Based Localization
- Particle Accelerators and Free-Electron Lasers
- Advanced ceramic materials synthesis
- Tribology and Wear Analysis
- Textile materials and evaluations
Wuhan University of Technology
2008-2024
China Spallation Neutron Source
2024
Spallation Neutron Source
2024
Chinese Academy of Sciences
2021-2024
Institute of High Energy Physics
2024
Tianjin University
2012-2023
Beihang University
2022-2023
University of Chinese Academy of Sciences
2021-2023
Shanghai Institute of Optics and Fine Mechanics
2021-2023
Tiangong University
2015-2023
High-precision calibration of binocular vision systems plays an important role in accurate dimensional measurements. In this paper, improved camera method is proposed. First, intrinsic parameters based on active with perpendicularity compensation developed. Compared to the previous work, eliminates effect non-perpendicularity motion accuracy. The principal point, scale factors, and distortion factors are calculated independently method, thereby allowing strong coupling these be eliminated....
The performance of digital image correlation is closely associated with the quality speckle pattern. In this paper, pattern analyzed theoretically concerning four critical factors: uniqueness, accuracy, precision, and spatial resolution. Pattern uniqueness could be characterized by secondary autocorrelation peak height; based on a theoretical analysis function pattern, analytical formulas are derived to estimate height. Measurement accuracy precision descriptions systematic error random...
Binocular vision systems play an important role in computer vision, and high-precision system calibration is a necessary indispensable process. In this paper, improved method for binocular stereo measurement based on arbitrary translations 3D-connection information proposed. First, new calibrating the intrinsic parameters of two with angle difference presented, which reduces effect deviation motion actuator accuracy. This simpler more accurate than existing active-vision methods can provide...
Herein, NiTi alloys are prepared by laser engineered net shaping (LENS) technology. By exploring the mechanical properties and microstructures of samples under different powers, it is concluded that with a power 350 W have better tensile strength (783 MPa) strain recovery rate (59.01%). In addition, microstructure at aging temperatures (400–800 °C) also explored. It found aged 600 °C had (729 (92.85%). phase‐transition temperature endothermic enthalpy exothermic after thermal treatment...
A theoretical model for cement hydration was proposed to study multi-mineral reactive transport processes under various mineral compositions and determine the effect of reactions interactions on kinetics shifting from silicate aluminate dominance. The reaction rates each dissolution, product precipitation, ionic diffusion, adsorption were calculated individually through degrees undersaturation supersaturation associated with concentration, all which coupled in modified Poisson–Nernst–Planck...
Upper limb rehabilitation robot can effectively help patients recover motor ability. Existing robots are usually driven by rigid motors and the mechanical structures cannot adapt to different with physical parameters needs. This paper designs a reconfigurable upper exoskeleton for elbow wrist joints pneumatic muscle actuators (PMAs). The assist achieve flexion/extension, flexion/ extension adduction/abduction integrating soft joint modules which work separately or together. realize two...
Abstract The 3D similarity coordinate transformation is widely used to estimate the parameters for measurement datum transformation. Accurate and reliable are crucial accurate data integration. However, accuracy of can be significantly affected or even severely distorted when observed coordinates contaminated by gross errors. To address this problem, an advanced iteratively weighted least squares solution based on proposed. This utilizes singular value decomposition method obtain rotation...
Compared with current research of simply improving the efficiency thermal absorber or storage, integrating two devices into one fundamentally avoids heat transfer loss between devices. In-situ self-assembled SiCw(SiC whisker)/SiC composite ceramics for integrated and storage were pressurelessly prepared from graded SiC, AlN, Si powders by layered powder embedded sintering in a low temperature range 1450°C to 1650°C. After sintered at 1550°C, sample A4 10.39 wt% not only exhibits optimal...
Abstract The evaluation of an object’s 3D shape change during ablation in wind tunnel testing is critical for the optimization thermal protection system. However, strong radiation and a harsh environment cause challenges to traditional measurement methods. A single camera digital micro-mirror device (DMD) projector-structured laser light system proposed in-situ test. customized DMD combined with source devised projecting concentrated full-field high-power structured stripes. To filter...
The role of ion diffusion in the heat flow and chemical shrinkage tricalcium aluminate (C3A) hydration was investigated using proposed multi-ionic reactive transport model for C3A hydration. Ion diffusion, dissolution, precipitation reactions were coupled governing equation field during presence gypsum. also governed by electric temperature fields model. Theoretical computations performed relating to all stages Excellent agreement achieved comparing simulation results experimental data under...