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Material fixing device for sound absorption coefficient measurement

A technology of fixing device and sound absorption coefficient, which can be used in measurement devices, material analysis using sonic/ultrasonic/infrasonic waves, and material analysis, which can solve problems such as large storage space and occupation.

Pending Publication Date: 2021-06-01
CRRC CHANGCHUN RAILWAY VEHICLES CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
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Problems solved by technology

Due to the different thicknesses of different sound-absorbing materials, some laboratories will prepare boards of different heights for the edge banding of the tested piece. These wood or aluminum boards for edge banding take up a lot of storage space, and each time they are used must be selected in advance according to the tested parts

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  • Material fixing device for sound absorption coefficient measurement
  • Material fixing device for sound absorption coefficient measurement
  • Material fixing device for sound absorption coefficient measurement

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Embodiment Construction

[0033] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. The following description of at least one exemplary embodiment is merely illustrative in nature and in no way taken as limiting the invention, its application or uses. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0034] It should be noted that the terminology used here is only used to describe specific implementations, and is not intended to limit the exemplary implementations according to the present application. As used herein, unless the context clearly dictates otherwise, the singular is intended to inclu...

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Abstract

The invention provides a material fixing device for sound absorption coefficient measurement. The material fixing device comprises pressing devices, a long sealing edge and a short sealing edge, the long sealing edge and the short sealing edge are sequentially connected end to end to form a closed shape, and the pressing devices are arranged on the long sealing edge and the short sealing edge and are used for fixing a measured material. The pressing devices are arranged to be suitable for different thicknesses of the measured material by adjusting the height of the pressing devices. According to the material fixing device for sound absorption coefficient measurement, the problems that existing product edge sealing tools are various in variety, cannot be universal and occupy a large amount of storage space are solved, and compared with existing products, the material fixing device has the advantages that the storage space is saved, the height is adjustable, and materials with different thicknesses can be fixed.

Description

technical field [0001] The invention relates to the field of acoustic measurement, in particular to a material fixing device for sound absorption coefficient measurement. Background technique [0002] With the improvement of living standards, people's requirements for the quality of the acoustic environment are getting higher and higher. From large halls and cinemas to small meeting rooms and bedrooms, people will lay sound-absorbing materials to improve the indoor acoustic environment quality, and the sound absorption coefficient of sound-absorbing materials is an important parameter for selecting acoustic structures in noise control projects. Size plays a positive guiding role in the application of materials in life, architecture and industry. [0003] Sound-absorbing materials can be roughly divided into two categories according to the sound-absorbing mechanism: one is the fibrous porous sound-absorbing material, which attenuates sound waves by relying on small open pore...

Claims

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Application Information

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IPC IPC(8): G01N29/22G01N29/26G01H7/00
CPCG01N29/22G01N29/26G01H7/00
Inventor 刘金安陈士斌高阳刘彦彤
Owner CRRC CHANGCHUN RAILWAY VEHICLES CO LTD
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