JPH0327351U

JPH0327351U -

Info

Publication number: JPH0327351U
Application number: JP8685689U
Authority: JP
Priority date: 1989-07-26
Filing date: 1989-07-26
Publication date: 1991-03-19

Description

[Brief explanation of drawings]

第１図は、この考案を実施した水中音響特性測
定装置の概略構成図、第２図は自由面の原理の説
明図、第３図は剛体面の原理の説明図、第４図は
、従来の水中音響管の概略説明図、第５図は従来
の音圧と距離との関係を示すグラフ説明図、第６
図〜第８図は、従来の水中音響管による測定方法
を示す説明図である。１……水中音響管、２……試料、３……送波器
、１０……受波器群、１２……受波器、１３……
加速度センサー、１４……送波器。 Fig. 1 is a schematic configuration diagram of an underwater acoustic characteristic measuring device implementing this invention, Fig. 2 is an explanatory diagram of the principle of a free surface, Fig. 3 is an explanatory diagram of the principle of a rigid surface, and Fig. 4 is a diagram of the conventional Figure 5 is a schematic explanatory diagram of an underwater acoustic tube, and Figure 5 is a graph explanatory diagram showing the relationship between conventional sound pressure and distance.
8 are explanatory diagrams showing a measurement method using a conventional underwater acoustic tube. 1... Underwater acoustic tube, 2... Sample, 3... Transmitter, 10... Receiver group, 12... Receiver, 13...
Acceleration sensor, 14...transmitter.

Claims

[Scope of utility model registration request]

In an underwater acoustic characteristic measurement device, a transmitter and a receiver are installed at a predetermined distance on the side facing a sample installed inside an underwater acoustic tube formed in a hollow cylindrical shape. Attach a wave receiver and an acceleration sensor to the back of the sample, and install a wave transmitter at a position facing the back of the sample.
An underwater acoustic characteristic measuring device characterized in that it is configured to be acoustically equivalent to a free surface or a rigid surface.