Test device and method for sound transmission loss of white vehicle door assembly with multiple metal sheets

Abstract

The invention discloses a test device and method for sound transmission loss of a white vehicle door assembly with multiple metal sheets, and relates to the technical field of automobile component production. The test device comprises a metal sheet installing device, a noise generation and reception component and a data processor; the metal sheet installing device comprises a reverberation chamber(1), a anechoic room (2) and an installation part (4) to be tested; the noise generation and reception component comprises a sounder (3), a sounding microphone and a sound receiving microphone; and the data processor comprises a data collector (14), a data processor (13), a signal generator (12), a filter (11) and a power amplifier (15). The problems that at present the sound transmission loss ofthe whole white vehicle door cannot be tested, calculation via data calculate tends to cause a large error, a test result may be inaccurate, further development of the thin wall plate structure and material of the white vehicle door is influenced, and the satisfied degree of users cannot be improved are solved.

Description

technical field [0001] The invention relates to the technical field of automobile production, in particular to a test device and a test method for sound insulation of a multi-metal sheet white car door assembly. Background technique [0002] With the development of the automobile industry, NVH, as the main index to weigh the comfort of the car, reflects the design level and manufacturing process of the car manufacturer, and has gradually become one of the important standards to measure the quality of the car. The white car door is a complex multi- The whole combination of thin metal plates, including stamping parts of thin-walled plates, and the necessary connection parts between each plate, including welding points, glue, etc., are related to the driver's influence on the driving in the car, such as tire noise, wind noise, and engine running noise. Therefore, it is very important to control the insulation volume. In order to improve the sound insulation performance of the w...

AI Technical Summary

Problems solved by technology

[0004] Aiming at the deficiencies of the prior art, the present invention provides a test device and test method for the sound insulation of multi-metal thin-plate white car door assemblies, which have the advantages of comparability, controllability, multi-frequency bands, and ease of use, and solve the problems currently on the market. It is impossible to carry out the sound insulation test for the whole door and the test calculation error is too large, resulting in inaccurate test results, which in turn affects the development of the door structure and material, and improves user satisfaction.

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