A kind of sound-absorbing tile based on composite material

A composite material and muffler tile technology, applied in the field of muffler tiles, can solve the problems of unsatisfactory effect, no difference in the absorption efficiency of high-frequency sound waves or low-frequency sound waves, etc., to reduce reflection intensity, reduce radiated noise and self-noise, reduce The effect of detection distance

Inactive Publication Date: 2011-11-30
KUNMING UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The current anechoic tile technology still has many deficiencies in reducing the radiated noise and self-noise of underwater moving bodies. Or there is no difference in the absorption efficiency of low-frequency sound waves, and the working environment and detection distance of sonar detectors need to be improved and improved

Method used

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  • A kind of sound-absorbing tile based on composite material
  • A kind of sound-absorbing tile based on composite material
  • A kind of sound-absorbing tile based on composite material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Example 1: The composite material-based anechoic tile used for submarines consists of foamed metal sheet 4 and rare earth supermagnetostrictive material sheet 5 with a certain radian and thickness, and a synthetic rubber sheet that is vulcanized and encapsulated into an integral structure after bonding them to each other. 3 composition. The shapes of the metal foam material sheet and the rare earth super magnetostrictive material sheet are consistent, and both have a sheet-like structure with a certain radian. The metal foam sheet is an aluminum foam sheet with a porosity of 90% and a thickness of 40 mm. The rare earth super magnetostrictive material sheet is a rare earth super magnetic material sheet with a thickness of 40 mm. Epoxy resin bonding, adhesive layer (inner adhesive layer) thickness 2mm; synthetic rubber sheet is divided into inner and outer two-layer structure, the outer layer is a solid structure, the inner layer has holes of irregular size and shape, t...

Embodiment 2

[0027] Example 2: The anechoic tile based on composite materials for torpedoes consists of metal foam material sheet 4 and rare earth super magnetostrictive material sheet 5 with a certain radian and thickness, and a synthetic rubber sheet that is vulcanized and encapsulated into an integral structure after bonding them to each other 3 composition. The shapes of the metal foam material sheet and the rare earth super magnetostrictive material sheet are consistent, and both have a sheet-like structure with a certain radian. The metal foam sheet is a foamed nickel alloy sheet with a porosity of 92% and a thickness of 10 mm. The rare earth super magnetostrictive material sheet is a rare earth super magnetic material sheet with a thickness of 10 mm. Between the metal foam sheet and the rare earth super magnetostrictive material sheet Bonded with epoxy resin, the thickness of the adhesive layer (inner adhesive layer) is 1mm; the synthetic rubber sheet is divided into inner and out...

Embodiment 3

[0029] Example 3: The anechoic tile based on composite materials for torpedoes consists of metal foam material sheet 4 and rare earth super magnetostrictive material sheet 5 with a certain radian and thickness, and common synthetic rubber that is vulcanized and encapsulated into an integral structure after bonding them to each other Composition of 3 pieces. The shapes of the metal foam material sheet and the rare earth super magnetostrictive material sheet are consistent, and both have a sheet-like structure with a certain radian. The foamed metal material sheet is a foamed aluminum alloy sheet with a porosity of 86% and a thickness of 5mm. The rare earth super magnetostrictive material sheet is a rare earth supermagnetic material sheet with a thickness of 5mm. Bonded with epoxy resin, the thickness of the adhesive layer (inner adhesive layer) is 1mm; the synthetic rubber sheet is divided into inner and outer two-layer structure, the outer layer is a solid structure, and the...

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Abstract

The invention relates to an anechoic tile based on a composite material, in particular to an anechoic tile made of a foam metal material and a rare-earth supermagnetostrictive material, and belongs to the technical field of anechoic. It is composed of foamed metal material sheet with certain radian and thickness, rare earth super magnetostrictive material sheet, and synthetic rubber sheet which is vulcanized and packaged into an integral structure after they are bonded to each other. The shapes of the metal foam material sheet and the rare earth super magnetostrictive material sheet are consistent, and their radians are consistent with the surface radian of the underwater moving body. After being encapsulated by a synthetic rubber sheet, they jointly form an anechoic tile. The invention can not only absorb the sound waves of the active sonar, significantly reduce the reflection intensity of the sound waves of the active sonar, but also suppress the vibration generated by the underwater moving body itself, isolate the machine noise in the underwater moving body from radiating to the underwater moving body, and significantly reduce the Self-noise of underwater moving bodies, reducing the passive sonar range of the detection side, etc.

Description

technical field [0001] The invention relates to an anechoic tile based on a composite material, in particular to an anechoic tile made of a foam metal material and a rare-earth supermagnetostrictive material, and belongs to the technical field of anechoic. Background technique [0002] When the underwater moving body moves underwater, strong radiation noise is often generated due to the rotation of the spiral descender, the reciprocating vibration of the machine and the movement of the fluid. If the radiation noise level of the underwater moving body is high, it is easy to be detected by the enemy target, which is not conducive to the concealment and safety of one's own side. The self-noise of the underwater moving body itself is too high, which will seriously affect the detection range of its own sonar. [0003] In order to solve the noise reduction problem of the underwater moving body, the usual way is to lay sound-absorbing tiles on the surface of the underwater moving ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B63G8/39G10K11/162
Inventor 刘增力许冬冬刘仁栋
Owner KUNMING UNIV OF SCI & TECH
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