An ultrasonic array technique for material characterization of plate samples
Summary
This study introduces a novel ultrasonic method for characterizing layered materials. The technique accurately estimates wave velocities, thickness, and density using spectral analysis of plane waves, achieving high reproducibility.
Area of Science:
- Materials Science
- Acoustics
- Non-Destructive Testing
Background:
- Accurate material characterization is crucial for quality control and performance prediction.
- Traditional ultrasonic methods can face limitations in resolving complex layered structures.
Purpose of the Study:
- To develop and validate an ultrasonic technique for precise characterization of layered specimens.
- To estimate longitudinal and transverse wave velocities, thickness, and density of materials.
Main Methods:
- Utilizing an ultrasonic system with a linear array for data acquisition in immersion.
- Decomposing spatio-temporal data into a plane pulse wave spectrum.
- Applying spectral response analysis and interpolating processing to correct for distortions.
Main Results:
- Demonstrated the feasibility of estimating material properties from spectral delays and amplitudes.
- Achieved high relative reproducibility: 0.11% for longitudinal wave velocity and thickness.
- Obtained 0.5% reproducibility for transverse wave velocity and 5% for density.
Conclusions:
- The proposed ultrasonic spectral analysis method enables accurate characterization of layered materials.
- Interpolating processing effectively suppresses distortions, enhancing estimation reliability.
- Experimental validation on fused quartz confirms the technique's efficacy and precision.
