FIELD: measurement.
SUBSTANCE: invention relates to the field of metrology. Acoustic interferometer comprises impedance tube, attached to it one or more microphones and speakers, arranged at one end of impedance tube holder for installation of test specimen and arranged inside cartridge support ring and movable piston with rod for pressing specimen to support ring. Piston rod is inserted into pneumatic cylinder connected to pressure control unit, made with possibility to control air supply to pneumatic cylinder and air outlet therefrom.
EFFECT: reduced spread of obtained acoustic characteristics for tested samples of different structures.
1 cl, 6 dwg
| Title | Year | Author | Number |
|---|---|---|---|
| ACOUSTIC INTERFEROMETER | 1995 |
|
RU2117283C1 |
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