Measurement and calculation of the sound absorption and insulation characteristics of vehicle-used multi-layered panel materials

作者：Shangguan, Wenbin; Xiong, Dong; Xie, Xinxing; Yang, Shanmiao; Zhang, Qu

来源：Journal of Vibration and Shock, 2018, 37(1): 241-247 and 264.

DOI：10.13465/j.cnki.jvs.2018.01.036

• Calculation results
• Dissipative materials
• Dissipative structure
• Insulation characteristics
• Insulation loss
• Panel materials
• Reverberation rooms
• Sound absorption coefficients

The measurement and calculation methods for the sound absorption and insulation characteristics of multi-layered panel materials including double felt, ABA (absorber-barrier-absorber) and dissipative materials were proposed. The sound absorption coefficients and the insertion losses of three kinds of multi-layered panel materials were measured with the Alpha cabin equipment and in an anechoic-reverberation room, respectively. To calculate the sound absorption and insertion loss of multi-layered panel materials, the sound absorption coefficient, flow resistivity and porosity of the single-layer materials were measured. Then, the sound absorption coefficient and insertion loss of the multi-layered panel materials were estimated by using a relevant software. The comparison between the measurement and calculation results shows reasonable agreement for the insertion losses. The error between the calculation and measurement results of the sound absorption coefficient was analyzed.

• 出版日期2018-1-15
• 单位华南理工大学