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Material soundproofing properties measuring device

A technology of sound insulation performance and measurement device, which is applied in the direction of measurement device, material analysis, material analysis using sound wave/ultrasonic wave/infrasonic wave, etc. It can solve the problem of sound insulation performance test of difficult polymer materials, the difficulty of sound insulation board sample, and the complexity of design and manufacture and other problems, to achieve the effect of simple and fast parameter adjustment, convenient test work and low cost

Inactive Publication Date: 2005-06-29
SOUTH CHINA UNIV OF TECH
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Problems solved by technology

For some special materials (such as polymer materials, glass and stone, etc.), it is quite difficult to form such a large sound insulation panel sample under general conditions, so it is difficult to use the existing sound insulation performance test room to test the sound insulation performance of polymer materials. test
In addition, such a standard sound insulation test room is complicated to design and manufacture, with many equipment and expensive expenses.

Method used

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  • Material soundproofing properties measuring device
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Embodiment Construction

[0013] The present invention will be further described in detail below in conjunction with the embodiments and the accompanying drawings, but the embodiments of the present invention are not limited thereto.

[0014] Such as figure 1 As shown, the material sound insulation performance measurement device includes a signal generator 1, a soundproof box 2, and a sound level device 4. The signal generator 1 is connected to the speaker 3 fixed in the soundproof box 2, and a tester is installed on one side of the soundproof box 2. A sound insulation board 5 made of processed materials, a sound leveler 4 is provided corresponding to the sound insulation board 5 , and a spectrum tester 6 is also connected to the speaker 3 .

[0015] Such as figure 2 As shown, the soundproof box 2 adopts a double-layer steel plate structure, and a fixing bracket 8 for the speaker 3 is arranged inside. The width is 4-6 mm, and sound-absorbing material, such as sponge (not shown in the figure), is pas...

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Abstract

This invention provides a test device of material sound-proof property, which comprises signal generator, sound-proof box, and sound degree device, wherein, the signal generator is connected with the loudhailer in the sound proof box with one side fixed with the sound proof board of the test material. The sound degree device is fixed relative to the sound proof board. The test material of the invention is convenient and is suitable to the test of the polymer materials and glass and rock.

Description

technical field [0001] The invention relates to the technical field of material sound insulation performance testing, in particular to a material sound insulation performance measurement device. Background technique [0002] The existing sound insulation performance test usually adopts the method of sound insulation performance test room, and the test is carried out in a room, and the material, size and decoration of the wall are strictly required. The equipment and equipment used mainly rely on imports, and the cost is high. The requirements are also greater. For example, in the standard sound insulation test reverberation chamber of the National Acoustic Laboratory of Tongji University, the sound insulation panel to be tested is a door. For some special materials (such as polymer materials, glass and stone, etc.), it is quite difficult to form such a large sound insulation panel sample under general conditions, so it is difficult to use the exist...

Claims

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Application Information

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IPC IPC(8): G01N29/00
Inventor 梁基照蒋兴华
Owner SOUTH CHINA UNIV OF TECH
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