GB/T 25077.2-2026
UpcomingAcoustics—Determination of airflow resistance—Part 2：Alternating airflow method
声学 流阻测定 第2部分：交变气流法
Application Summary AI generated
This standard specifies the alternating airflow method for measuring the airflow resistance of porous acoustic materials, such as sound-absorbing panels and fibrous insulation. It is applied in laboratory testing for product quality control and material characterization in the automotive, construction, and aerospace industries. The method is particularly useful for materials where steady airflow methods are impractical due to high resistance or structural sensitivity.
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