研究目的
To evaluate the measurement result and its accuracy characteristics (error and/or uncertainty) of the ultrasound reflection coefficient using the method of linearization, considering the correlation between measurements taken from working and reference channels of the installation.
研究成果
The study concludes that using the reference channel for measuring A0 and the working channel for A eliminates correlation between measurements, allowing the use of the linearization method for accurate uncertainty estimation. This approach simplifies the evaluation process and enhances measurement reliability.
研究不足
The study is limited to the evaluation of the reflection coefficient using soybean oil as the test liquid and may not be directly applicable to other liquids or conditions without further research.
1：Experimental Design and Method Selection:
The study compares two methods of measuring ultrasound amplitudes before and after applying soybean oil to the acoustic cell's surface, using either the working channel alone or both working and reference channels.
2：Sample Selection and Data Sources:
Soybean oil is used as the test liquid, and measurements are taken at ultrasonic frequencies in the range of 10-150 MHz.
3：List of Experimental Equipment and Materials:
An installation based on the impedance method with two channels (working and reference) and an acoustic cell made of fused silica.
4：Experimental Procedures and Operational Workflow:
Measurements are conducted in two embodiments to assess correlation between A0 and A measurements.
5：Data Analysis Methods:
The correlation coefficient and its significance are evaluated using statistical methods, and the method of linearization is applied to estimate measurement uncertainty.
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