A5100659431- Terahertz technology and applications
- Spectroscopy and Chemometric Analyses
- Microwave and Dielectric Measurement Techniques
- Superconducting Materials and Applications
- Optical Systems and Laser Technology
- Superconducting and THz Device Technology
- Thermography and Photoacoustic Techniques
- Advanced Measurement and Detection Methods
- Particle Accelerators and Free-Electron Lasers
- Integrated Circuits and Semiconductor Failure Analysis
- Particle accelerators and beam dynamics
- Advanced Optical Sensing Technologies
- Photonic and Optical Devices
- Gyrotron and Vacuum Electronics Research
- Advanced Algorithms and Applications
Beijing Institute of Technology
2022-2024
Hebei University
2009
The evaluation of the internal defects in high-voltage cross-linked polyethylene cables is highly crucial for security and reliability power transmission. Here, a terahertz (THz) frequency-modulated-continuous-wave non-destructive testing (NDT) imaging system used to demonstrate non-contact detection cable (35 KV). Combined with linear scanning axial rotation, three-dimensional (3D) data columnar target acquired, 3D perspective image reconstructed. correspondence between real space...
Polyethylene (PE) pipes are widely used as the main carrier for transportation of natural gas, so nondestructive testing techniques PE essential safety gas transportation. In order to compensate shortcomings conventional inspection methods, a terahertz (THz) three-dimensional imaging system is designed. The based on frequency-modulated continuous-wave (FMCW) technology, with THz source bandwidth 0.225-0.330 and an output power over 5 mW, which can achieve submillimeter spatial resolution in...
Accurate acquisition of the complex refractive index materials is great significance to understand their physical properties. Based on a single time-domain transmission model in <inline-formula xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink"> <tex-math notation="LaTeX">$Y$ </tex-math></inline-formula> -band, here, we develop free-space nondestructive testing method combined with parameter extraction flat plate materials. This overcomes limitation...
Based on terahertz frequency modulated continuous wave nondestructive testing system, a ceramic pencil holder was studied. Different types of defects are designed the outer wall pen holder. By using high penetration and non-destructive characteristics waves, time domain, height rotation angle information obtained by scanning in an all-round multi-angle manner, high-resolution three-dimensional images constructed. At same time, processing technology noise reduction is used to optimize images....
For the purpose of reducing calculation complexity, smooth support vector regression (SSVR) is put forward to improve algorithm. In this paper, SSVR used make furnace combustion state time series analysis model. based on SSVR, influence different kernel functions and parameter epsiv model researched compared; at same time, phenomenon false alarm generated by interference with camera from coal ash slag discovered in fitting, method adjustable (AepsivSSVR) presented mask alarm. About 200 flame...