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Studies of Angular Resolution for Acoustic Arc Arrays
Dmitry A Sednev1, Alexey I Soldatov1, Andrey A Soldatov1
1School of Non-Destructive Testing, National Research Tomsk Polytechnic University, 30 Lenin Avenue, 634050 Tomsk, Russia.
Sensors (Basel, Switzerland)
|July 14, 2023
Summary
This study investigates angular resolution in phased array ultrasonic nondestructive testing. Results from computer modeling and experiments confirm findings for concave and convex arrays.
Area of Science:
- Materials Science
- Engineering
- Physics
Background:
- Phased arrays are crucial for modern ultrasonic nondestructive testing (NDT).
- Angular resolution is a key performance parameter in phased array NDT.
- Optimizing angular resolution enhances defect detection capabilities.
Purpose of the Study:
- To analyze the angular resolution of concave and convex acoustic arrays.
- To evaluate the impact of array configuration on angular resolution in ultrasonic testing.
- To validate simulation results with experimental data.
Main Methods:
- Computer modeling of phased array ultrasonic testing.
- Simulation of concave and convex arrays with varying element counts (16, 32, 64) and element spacing (0.5, 1 mm).
- Application of the total focusing method (TFM).
- In situ experimental validation.
Main Results:
- Detailed analysis of angular resolution for different array geometries and element configurations.
- Quantitative data on how element distance and arc radius affect angular resolution.
- Demonstrated correlation between simulated and experimental results for angular resolution.
Conclusions:
- The study provides insights into optimizing phased array design for improved angular resolution in NDT.
- Findings are applicable to selecting and designing acoustic arrays for specific ultrasonic testing applications.
- Both computer modeling and experimental validation confirm the study's outcomes.
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