Ultrasonic Guided Wave & Shearography Nondestructive Evaluation (NDE)
Junzhen Wang
Research Scientist II
junzhenw@iastate.edu
(515) 294-3307
Guided Wave Propagation Modeling and Simulation
- Analytical formulations of wave-propagation solutions
- Finite element simulations of guided wave propagation in elastic waveguides (e.g., plates, pipelines, rails, etc.)
Ultrasound Damage Imaging
- Baseline-free damage detection techniques, e.g., time reversal methods
- Transducer array design for metallic and composite structures
Nonlinear Ultrasonic Techniques
- Second and higher harmonic generation, wave mixing, and nonlinear resonance ultrasound spectroscopy
- High sensitivity to damages from micro to macro scale
Machine Learning Assisted Damage Characterization
- Simulation-trained neural networks for automatic damage evaluation
- Experimentally measured data for actual damage prediction
Shearography Damage Visualization
- Detection of impact damage, delamination, and disbond in composite structures
- Thermal and acoustic shearography
