A5032024015- Thermography and Photoacoustic Techniques
- Ultrasonics and Acoustic Wave Propagation
- Non-Destructive Testing Techniques
- Calibration and Measurement Techniques
- Advanced Measurement and Detection Methods
- Structural Health Monitoring Techniques
- Optical measurement and interference techniques
- Muscle activation and electromyography studies
- Stroke Rehabilitation and Recovery
- Fire effects on concrete materials
- Advanced Sensor Technologies Research
- Nuclear Materials and Properties
- High-Temperature Coating Behaviors
- Fusion materials and technologies
- Infrared Target Detection Methodologies
- Prosthetics and Rehabilitation Robotics
- Conservation Techniques and Studies
- Laser Material Processing Techniques
- Additive Manufacturing Materials and Processes
- Nuclear reactor physics and engineering
- High Entropy Alloys Studies
Wuhan University of Technology
2022-2023
Xi'an Jiaotong University
2017-2023
Jiangsu University
2022
Hubei University of Arts and Science
2022
In this paper, a very fast numerical solver for simulating signal perturbation of infrared thermography testing (IRT) due to delamination defects was developed by using the database unflawed IRT information. First, simulation method frequency-domain summation scheme proposed authors is briefly introduced as bases present fast-forward solver. Second, database-type rapid single-frequency harmonic signals enhance efficiency without worsening precision. addition, in order efficiently implement...
A new infrared preprocessing modality called sequence differential processing is proposed. Different from the cold image subtraction which only decreases background noise, proposed takes parallel test into account to preprocess raw thermal data prior applying advanced postprocessing techniques such as principal component thermography and pulsed phase thermography. The results show that method not effectively reduces influence of uneven laser energy distribution on detection efficiency but...
During manufacturing and operation, different kinds of defects, e.g., delamination or surface cracks, may be generated in the plasma-facing components (PFCs) a Tokamak device. To ensure safety PFCs, various nondestructive testing (NDT) techniques are needed for defect failure mode. This paper gives review recently developed ultrasonic (UT) laser thermography methods inspection cracks PFCs. For monoblock W/Cu PFCs divertor, bonding quality at both W-Cu Cu-CuCrZr interfaces was qualified by...
The laser array spots thermography (LAST) is a new fully non-contact and non-destructive method for inspection of surface cracks. In this study, the capability crack in specimen at elevated temperature inve
Thin multi-layered materials are widely used in key structures of many high technology industries. To ensure the quality and safety structures, layer thickness measurement by non-destructive testing (NDT) techniques is essential. In this paper, a novel approach for each layer's thin material proposed using ring-shaped laser generated focused ultrasonic bulk waves. The method uses with variable radius to generate shear waves focus inside structure. By analyzing signal characteristics at ring...
First wall panels (FWPs), which adjoin the inner of blanket modules in vacuum vessel (VV) a Tokamak device, are structures multilayer bounded together with solid welding technique order to perform its heat exchange, VV protection, and neutron breeding functions. The quality joint between layers is key factor for FWP integrity. In conduct online inspection delamination defect FWPs, nondestructive testing (NDT) method capable detect without accessing into required. this paper, feasibility...
The laser array spot thermography (LAST) is a fully non-contact and non-destructive method for the inspection of surface cracks with high efficiency. In this study, detection capability in structures curved surfaces experimentally studied. influence angle on crack imaging results also investigated. experiment show that pipes different dimeters can be detected imaged by LAST.
In this paper, some research on the Laser Infrared Thermography (LIT) and Eddy Current (ECIT) for quantitative nondestructive testing evaluation of surface cracks delamination multilayer structures are introduced. At first, a Array Spots (LAST) method inspection in metallic is presented. LAST related measurement image processing methods crack profiles introduced detail. Second, LIT technique numerical analysis detection sizing interface aiming at application to in-vessel Tokamak fusion...
The detection for internal defects of the practical aviation carbon fiber reinforced polymer (CFRP) using different modes laser was discussed in this paper. results show that effect with long pulsed wave heating mode is best, and then sawtooth followed by sine mode. Besides, valid image processing method plays a significant role improving differential infrared thermography. Compared thermal lamp thermography, thermography better. There are two main advantages planar to heat composites: (1)...