A5005205743- Ultrasonics and Acoustic Wave Propagation
- Rock Mechanics and Modeling
- Geophysical Methods and Applications
- Non-Destructive Testing Techniques
- Advanced Manufacturing and Logistics Optimization
- Ergonomics and Musculoskeletal Disorders
China Jiliang University
2021-2025
China Special Equipment Inspection and Research Institute
2021
Beijing Institute of Technology
2018
Background: In modern rehabilitation medicine, the introduction of robotic technology provides patients with more precise and personalized services, especially demonstrating significant application potential in functional recovery training. Objective: To address needs for compliance, lightweight design, safety robots, this study proposes a hybrid-driven lumbar massage arm based on motors, cylinders, pneumatic artificial muscles, improves workspace calculation accuracy. Methods: Through...
To gain an insight into the evolution of micro-cracks in concrete materials, a quantitative acoustic emission investigation on damage process prisms subjected to three-point bending loading was performed. Each monitored signals processed by two-level wavelet packet decomposition four different frequency bands (AA 2 , DA AD and DD ), energy coefficients R 1 3 4 that parameterize their characteristic were calculated. By analyzing variations lowest band highest (DD whole divided three stages:...
On meso-scale, concrete can be considered as a kind of non-homogeneous composite mainly composed aggregates, cement paste and cracks. Under uniaxial quasi-static loading condition, quasi-brittle characteristics observed in the stress-strain curves. Failure process is essentially nucleation, propagation convergence internal micro-cracks.Therefore, investigation on crack growth meso-scale beneficial to understand deformation failure concrete. Acoustic emission physical detection method which...