A5040995371- Ultrasonics and Acoustic Wave Propagation
- Flow Measurement and Analysis
- Optical measurement and interference techniques
- Non-Destructive Testing Techniques
- Image and Signal Denoising Methods
- Structural Health Monitoring Techniques
Zhejiang Institute of Special Equipment Inspection
2025
Zhejiang University
2019
The plastic liner of the IV type hydrogen storage cylinders was made multiple segments using laser welding technology, with a small diameter and wall thickness, making it difficult to detect. At present, there were few detection technologies for cylinders. On basis considering structural characteristics typical defects liners, this paper integrated ultrasonic total focusing method (TFM) imaging curved structure water immersion interface coupling multi-dimensional automatic control technology...
Discrete defects in thick composites are difficult to detect for the small size and structure noise that appears multilayer composites. In this paper, a nonlinear method, called recurrence analysis, has been used characterizing discrete section Carbon Fiber Reinforced Polymer (CFRP) with complex lay-up. A 10 mm CFRP specimen nearly zero porosity was selected, blind holes different diameters were artificially constructed specimen. The second half of backscattered signal analyzed by analysis...