GB/T 5266-2006 声学 水声材料纵波声速和衰减系数的测量 脉冲管法

ICS17.140

A59

中华人民共和国国家标准

GB/T5266一2006

代替GB/T5266一1985

声学水声材料纵波声速和衰减系数的

测量脉冲管法

Acoustics一Measurementsofthelongitudinalwavevelocityandattenuation

coefficientofrunderwateracousticalmateriaIs一Pulsetubemethod

2006一05一08发布2006一11一01实施

中华人民共和国国家质量监督检验检疫总局

中国国家标准化管理委员会发布

GB/T5266一2006

目次

前言··········，，···························，，·」」」·····，·····」··········，···」·，·，·····4···················，…·…m

1范围···，，··，、····，，，，，·······，，，··‘·1，，，，，··【···，，·，··，··1···，，，，，·‘·········，···、、····，…1

2规范性引用文件···················，··········································，，···········，··············…·…1

3术语和定义···············，··············，·····················，····，··········，，，·············，···········，，1

4符号和缩略语·······，·····，，··‘······，···，·········，···，·‘·····，，，··，，··········，，，，，········，·····‘·······一·1

5测量原理····，····································，，·········。········，······································……2

5.1复反射系数的测量···，··············」···········，··············，···········，·····-··················一·2

5，2试样输人阻抗及其与复反射系数的关系，··，，·，1·1111··，·，，，·1‘111·，，，，，，·1‘··，?·，，，、····，，··，，，二2

5.3纵波声速和衰减系数的计算···················，············，·················，·········，····，········一·“3

5.4测量频率范围···································，··············，·······················，·············一·3

G测量装置及试样‘·，，，·，，····1·‘·，，，，，，··1···‘，·，，，，·11·‘·，·，·····················，·，·1‘·，·，一4

6.1测量装置组成·····，·····，，，，，·········，········，，，，·1······，·，。········，，，···········一4

6.2标准反射体要求······4······························，·······················································一·5

6.3试样要求，···········，···········，，，，·····················，··，，，，···········，··，·············，············，·，…6

7测量方法，·，·，1·1···，·，··1‘1···，·，，·1··，·，··1··，，······1····，，··，·‘····，··，·，·，，·····，···，一右

7.1测量前的准备··································，···················································，·········……6

7.2复反射系数的测量··················，·············，，·············，·········································。··…6

7.3纵波声速和衰减系数的计算···············，··，·，····‘···，，····，···········，··，···········，·，，··········一·?

8测量不确定度··················“·············4·········，······················································……?

附录A(资料性附录)脉冲声管中水的声速的测量·························，·············，········，···一·8

附录B(资料性附录)参考文献，·，，，，··-·11··，··，，，，·1·1·，‘，，，，·“1‘‘，，，，·-··“··，一““、·”’，，’。

GB/TS跪6一20Q6

月JI吕

本标准代替G曰T526一‘1985《水声材料纵波声速和衰减的测量脉冲管法》。

本标准与GB/T5266一1985相比，增加了数字测量装置，采用了数字程控仪器和离散傅立叶变换

(DFT)技术。

本标准的附录A和附录B为资料性附录。

本标准由中国科学院提出。

本标准由全国声学标准化技术委员会s(AC/TC71)归口。

本标准的起草单位:中国船舶重工集团公司第七一五研究所、中国科学院声学研究所。

本标准主要起草人:李水、缪荣兴、王荣津。

本标准所代替标准的历次发布版本情况为:GB/T5266一9185。

GB/T5266一2006

声学水声材料纵波声速和衰减系数的

测量脉冲管法

范围

本标准规定了在刚性厚壁声管内，用脉冲声技术在稳态平面波条件下测量水声材料试样复反射系

数，然后计算试样材料纵波声速和衰减系数的方法

本标准适用于水声用均匀、密实的高分子材料

2规范性引用文件

下列文件中的条款通过本标准的引用而成为本标准的条款。凡是注日期的引用文件，其随后所有

的修改单(不包括勘误的内容)或修订版均不适用于本标准，然而，鼓励根据本标准达成协议的各方研究

是否可使用这些文件的最新版本。凡是不注日期的引用文件，其最新版本适用于本标准

GB/T3223一1994声学水声换能器自由场校准方法

GB/T3947一1996声学名词术语

GB/T4472一1984化工产品密度、相对密度测定通则

3术语和定义

GB/T3947一1996确立的及下列术语和定义适用于本标准。

3.1

脉冲管pulsetube

可以在其中发射、传播和接收脉冲声波的充水刚性厚壁金属圆管。用于测量水声材料或构件样品

的声学性能参数

注:厚壁指管的壁厚不小于管的内半径

3.2

复反射系数ocm