A5114040178- Advanced Surface Polishing Techniques
- Advanced machining processes and optimization
- Laser Material Processing Techniques
- Advanced Machining and Optimization Techniques
- Surface Roughness and Optical Measurements
- Erosion and Abrasive Machining
- Industrial Engineering and Technologies
- Thermal Analysis in Power Transmission
- Diamond and Carbon-based Materials Research
- High voltage insulation and dielectric phenomena
- Integrated Circuits and Semiconductor Failure Analysis
- Advanced Measurement and Detection Methods
- Metal and Thin Film Mechanics
- Space Satellite Systems and Control
- Electrical Fault Detection and Protection
- Engineering Technology and Methodologies
- Recycling and utilization of industrial and municipal waste in materials production
- Optical Systems and Laser Technology
- Industrial Vision Systems and Defect Detection
Xi'an Institute of Optics and Precision Mechanics
2014-2024
Chinese Academy of Sciences
2018-2024
National University of Defense Technology
2020-2024
Shanxi University
2023
Fused silica optics, as key components in high - power laser systems, are prone to be damaged under short pulse ultraviolet (UV) irradiation. CO2 is usually used repair the damage and extend service life of optics. However, anti characteristics repaired substrates sometimes can't meet expectation. To facilitate better application repairing method, this work studied irradiating mechanism fused detail investigated optical surface through experiments. Firstly, finite element level set (FELS)...
In AMRF (arrayed magnetorheological finishing) process of fused silica laser optics, ripple structures would generate on the optical surface. The could cause nonlinear self-focusing and localized energy deposition, finally induced damage. this work, removal improvement anti-laser damage characteristics were studied. First, heat deposition light-field enhancement by analyzed finite element simulation method, negative impact was clarified. Then, ripple-structure surface polished a combined...
Along with the continuous development of optical systems, fabrication optics gradually moved towards large aperture and high quality. To meet requirements advanced technologies represented by magnetorheological finishing (MRF) were applied in processing optics. According to background high-efficiency processing, this work focused on design arrayed equipment, including magnetic field theoretical analysis, simulation, equipment construction, removal function preparation stability test. Through...
There have been few investigations dealing with the force model on grinding brittle materials. However, dynamic material removal mechanisms not yet sufficiently explicated through grain-workpiece interaction statuses while considering characteristics. This paper proposes an improved for Zerodur, which contains ductile force, and frictional corresponding to phases, as well friction process, respectively. The critical uncut chip thickness agc of brittle-ductile transition maximum agmax a...
With the continuous development of high-power laser systems, optics gradually changed towards large-aperture, high-quality. To adapt to fabrication large-aperture optics, a new-type array magnetorheological finishing (AMRF) technique was developed and had made initial progress. However, AMRF would introduce more obvious ripple structures (such as 1 mm−1 spatial frequency) compared original MRF while adopting conventional raster path, might affect beam transmission. For further application...
As a key component of high-power laser device, fused silica optics needs to bear great energy, and damage is easily generated on the optical surface. In order improve service life availability optics, it necessary repair damaged optics. this work, technique damaged, was studied. The neural network method mainly used establish correlation between number small-scale points depth. prediction accuracy model better than 90%. Based model, removal depth parameters were optimized with suppression...
Most of the existing defect detectors focus on size, location, depth and number defects tested components. The instrument is usually large in size requires high accuracy for environment motion devices. In contrast, direct random bed motion, which aims at finding locating defects, highly efficient, low-cost environmentally practical, while research vibration-resistant tester rare.In order to solve this problem, based principle micro-scattering imaging dark field, a set optical component...
Nowadays, many optical elements are fabricated by means of glass molding using hard and brittle inserts such as Silicon Carbide (SiC) Nitride (Si<sub>3</sub>N<sub>4</sub>). However, for those hard-to-machine materials, the most feasible solution is still with ultra-precision grinding following polishing. Hence, it necessary meaningful to study their plastic properties development fabrication manufacturing process. conventional methods including compression test indentation fracture mechanics...
UlE, as a kind of ultra-low thermal expansion glass, has been widely applied in large-aperture optical mirrors and space telescopes. However, hard-brittle material feature ULE brings certain difficulty for machining. In this paper, rotary ultrasonic vibration-assisted peripheral grinding (RUPG), combining vibratio (UV) conventional (CG) is proposed, process quality characteristic are investigated terms surface morphology, force, roughness, subsurface damage depth, morphology. A serious...
Glass-ceramics are considered superior materials for aspherical optics in large-aperture telescopes and space mirrors due to their outstanding mechanical thermal performance. To improve the processing quality efficiency of glass-ceramics, ultrasonic vibration assisted grinding (UVG) is widely studied, focusing on machining mechanism surface generation. However, characteristics aspheric rarely studied. Herein, rotary vertical (RUVG), where direction wheel parallel rotation liner velocity...