GB/T 32523-2016 in English
VALIDAcoustics-Measurement of sound pressure reflection coefficient,sound pressure transmission coefficient and absorption coefficient for underwater acoustical material sample-Travelling wave tube method
- Issued on:2016-02-24
- Implemented on:2016-09-01
- File Format:PDF
- Delivery:Via email within 1~3 business days
$214.00
《GB/T 32523-2016声学 水声材料样品声压反射系数、声压透射系数和吸声系数的测量 行波管法》由TC17（全国声学标准化技术委员会）归口，主管部门为中国科学院。
Introduction
1. Standard Overview
This standard specifies the device, principle, conditions and method for measuring the sound pressure reflection coefficient, sound pressure transmission coefficient and sound absorption coefficient of underwater acoustic material samples using the traveling wave tube method.
2. Technical Background and Evolution
With the development of underwater acoustic technology, the requirements for the acoustic performance of materials are increasing. As an efficient measurement method, the traveling wave tube method has lower test frequency limits and higher measurement accuracy than the traditional standing wave tube method.
3. Comparison of standard frameworks
| Standard dimensions | Existing method (GB/T14369-2011) | New standard (GB/T32523-2016) |
|---|---|---|
| Measurement principle | Standing wave tube method | Traveling wave tube method |
| Applicable frequency range | 100Hz~3kHz | 100Hz~3.5kHz |
| Measurement accuracy | ±2dB | ±0.1（k=2） |
4. Implementation Suggestions
System Selection:It is recommended to use a stainless steel round tube with a diameter not less than the inner radius of the tube as the traveling wave tube, and ensure that the wall thickness is uniform to reduce vibration interference.
Operation Steps:Prepare the measuring device, install the sample and collect data according to the standard process, and pay special attention to frequency fine-tuning to establish a stable traveling wave field.
Environmental Control:Strictly control the laboratory temperature (5℃~35℃) and humidity (≤85%) to ensure the stability of the measurement conditions.
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