Sound insulation performance testing method and device

Abstract

The invention relates to a test method and a test device for sound insulation performance. The test method of the sound insulation performance comprises the following steps that a material to be tested is arranged on a partition plate, then the partition plate is arranged in a box body, the box body is divided into at least two testing layers by the partition plate in the vertical direction, an opening is formed in the uppermost testing layer, and the side, provided with the material to be tested, of the partition plate faces the opening; a plurality of impact pieces are allowed to sequentially fall onto the to-be-tested material in the box body from the opening under the same initial condition, and the average value of the maximum sound decibels of the plurality of impact pieces falling onto the to-be-tested material detected by the first test layer is recorded as F1'; the average value of the maximum sound decibels of the plurality of impact pieces falling on the to-be-tested material detected by the second test layer is recorded as F2', and the standard sound decibel F' of the to-be-tested material is calculated according to F1 'and F2'. The test method is simple in process andhigh in testing accuracy.

Description

technical field [0001] The invention relates to the field of sound-insulating materials, in particular to a test method and a test device for sound-insulation performance. Background technique [0002] With the development of social economy and the improvement of people's living standards, residential comfort, as one of the important indicators to measure the quality of life, is attracting more and more people's attention. Noise pollution is listed as the main problem of environmental pollution control in the 21st century. It will not only affect people's normal rest, study and work, reduce housing comfort, but also may damage people's hearing health, and even cause diseases. Among them, impact noise is an indoor One of the main sources of noise. Generally speaking, the floor is the main component that generates impact noise. For example, the collision of door and window switches, objects falling on the ground, dragging of tables and chairs, and the impact of people's heels...

AI Technical Summary

Problems solved by technology

The detection equipment of the reverberation chamber method is expensive, and the market price is hundreds of thousands of yuan, and it is only applicable to the room where the ground sound insulation material construction has been completed (the standard test method requires the reverberation chamber area to be 10m 2 ), but due to site and other conditions, it is extremely difficult to conduct frequent large-area sound insulation tests during the material development stage

However, although the amount of material used to test the sound insulation performance of the impedance tube method is small, it cannot simulate the reverberation of the actual environment, which is quite different from the actual application environment of the material, and the test accuracy is poor.

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