| 吕世金,苗金林,张晓伟.水下材料声学性能宽频段测量方法[J].,2011,30(1):37-45 |
| 水下材料声学性能宽频段测量方法 |
| A broad frequency band measurement method of acoustic performance for underwater material |
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| 中文摘要: |
| 本文根据脉冲法和传递函数法的测试原理,建立水下声学材料吸声性能宽频段测量方法,在同一水声声管,相同状态下,对橡胶材料吸声性能进行测试分析。分析表明:常压及加压环境下,采用传递函数法和脉冲法测量材料的吸声性能,在重合频段(4 kHz～5.5 kHz)测试结果基本一致,测试偏差小于5%,从而验证了不同测量原理,测试材料水下声学性能的通用性。因此,采用传递函数法和脉冲法,可以实现水下材料声学性能宽频带测试。 |
| 英文摘要: |
| The broad frequency band measurement method of acoustic performance for underwater material is established base on the principle of pulse method and transfer function method.The measurement of sound absorption for rubber material at same state shows that the measure result is consistent in the overlap frequency band(4 kHz～5.5 kHz)for the two measurement method under normal and pressurized condition,the measurement difference is less than 5%.The result shows that the different method have the same precision to measure absorption coefficient of material.So the broad frequency band measurement method of acoustic performance for underwater material may be achieved by transfer function and pulse method. |
| DOI：10.11684/j.issn.1000-310X.2011.01.006 |
| 中文关键词: 水下材料 声学性能 脉冲法 传递函数法 测量方法 |
| 英文关键词: Underwater material Acoustic performance Pulse method Transfer function method Measurement |
| 基金项目: |
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