Effects of low temperature environment on acoustic performance of porous material
WAN Zhong1, JIA Fuxin2, MA Wengeng2, SUN Ming3, SUN Limin4
1. School of Naval Architecture, Ocean and Civil Engineering, Shanghai Jiao Tong University, Shanghai 200240, China;
2. College of Shipbuilding Engineering, Harbin Engineering University, Harbin 150001, China;
3. Dalian Shipbuilding Industry Co., Ltd., Dalian 116021, China;
4. Shanghai Institute of Space Power-Sources, Shanghai 200245, China
Abstract：For the influence of a low-temperature environment on the acoustic properties of porous outfitting materials, the acoustic characteristic parameters test of the impedance tube is carried out. Based on the transfer function method, the study carries out the different environmental factors that influence ship outfitting material acoustic performance test study. The law of the influence of temperature and moisture content on the acoustic properties of glass wool material is given. On this basis, the port icebreaker as an example to analyze the effect of the low-temperature acoustic performance of glass wool material on the cabin noise. The study shows that the high-frequency sound absorption coefficient of wet glass wool at low temperatures will decrease significantly with increasing moisture content, and the insertion loss will increase with increasing moisture content. However, the changes in the acoustic properties of porous outfitting materials resulting in the polar environment do not innoise.
万忠1，贾福鑫2，马文庚2，孙明3，孙丽敏4. 低温环境对多孔材料声学性能的影响研究[J]. 振动与冲击, 2023, 42(19): 260-265.
WAN Zhong1, JIA Fuxin2, MA Wengeng2, SUN Ming3, SUN Limin4. Effects of low temperature environment on acoustic performance of porous material. JOURNAL OF VIBRATION AND SHOCK, 2023, 42(19): 260-265.
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