High-frequency dynamic acoustic field manipulation method and its application to flaw evaluation and imaging
Kai Wang1, Yihua Kang1, Kaiqing Wang1
1School of Mechanical Science and Engineering, Huazhong University of Science and Technology, Wuhan 430074, China.
The Journal of the Acoustical Society of America
|September 22, 2025
Summary
This study introduces a novel megahertz-range rotational acoustic field manipulation method for ultrasonic flaw evaluation. The technique significantly improves the accuracy of flaw orientation and size identification compared to traditional methods.
Area of Science:
- Acoustics
- Materials Science
- Non-Destructive Testing
Background:
- Current acoustic field manipulation methods are limited to low frequencies and static fields.
- Applicability to ultrasonic regimes is restricted, hindering advanced flaw detection.
Purpose of the Study:
- To propose and investigate a megahertz-range rotational acoustic field manipulation method.
- To apply this method for enhanced flaw evaluation and imaging in ultrasonic applications.
Main Methods:
- Theoretical analysis of dynamic acoustic field propagation up to the megahertz range.
- Formulation of a motion-modulated transmission model for field regulation.
- Development of a composite flaw evaluation method using directional rotation of the dynamic field.
Main Results:
- The proposed method accurately identifies flaw orientation and size with a maximum angle error of 0.3%.
- Demonstrated 15% and 18% improvements in angle and size accuracy, respectively, over traditional ultrasonic imaging.
- Simulation and experimental validation of the dynamic ultrasonic field manipulation technique.
Conclusions:
- The megahertz-range rotational acoustic field method offers superior performance for flaw evaluation.
- This technique provides an efficient approach for dynamic ultrasonic field manipulation and directional field applications.
- The findings guide future advancements in ultrasonic imaging and non-destructive testing.
