文章摘要
伍发元,代小敏,方铭,刘晓磊,李翔,蔡俊.纤维截面形状对聚酯纤维材料吸声性能的影响研究[J].声学技术,2020,39(5):618~621
纤维截面形状对聚酯纤维材料吸声性能的影响研究
Research on the influence of polyester fiber cross-section shape on sound absorption performance of polyester fiber materials
投稿时间:2019-05-10  修订日期:2019-06-25
DOI:10.16300/j.cnki.1000-3630.2020.05.015
中文关键词: 聚酯纤维  吸声系数  截面形状  流阻率模型  声阻抗模型
英文关键词: polyester fiber  sound absorption coefficient  cross-section shape  flow-resistance model  acoustic impedance model
基金项目:国网科技项目(52182017001P)
作者单位E-mail
伍发元 国网江西省电力有限公司电力科学研究院, 江西南昌 330096  
代小敏 国网江西省电力有限公司电力科学研究院, 江西南昌 330096  
方铭 国网江西省电力有限公司, 江西南昌 330096  
刘晓磊 国网江西省电力有限公司电力科学研究院, 江西南昌 330096  
李翔 上海交通大学环境科学与工程学院, 上海 200240
山东科技大学化学与环境工程学院, 山东青岛 266590 
 
蔡俊 上海交通大学环境科学与工程学院, 上海 200240 juncai@sjtu.edu.cn 
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中文摘要:
      为探讨聚酯纤维截面形状对吸声性能的影响,通过热压法制备了4种不同纤维截面形状的聚酯纤维板,利用阻抗管对4种聚酯纤维板在80~6 300 Hz频率范围内的吸声性能进行测试。根据流阻率模型和声阻抗模型对材料吸声性能进行预测,并将该模型的计算结果与测试结果进行比较。结果表明:扁平截面的聚酯纤维材料的吸声性能最佳,平均吸声系数达到0.404;对于聚酯纤维材料的吸声系数与模型的计算值,圆形截面聚酯纤维材料吻合较好(全频段误差率为2.036%),异形截面聚酯纤维材料的误差较大。
英文摘要:
      To investigate the influence of the cross-section shape of polyester fiber on the sound absorption performance, four kinds of polyester fiber panels with different cross-section shapes are prepared by hot pressing method. The impedance tube is used to measure the sound absorption coefficient in the frequency range of 80~6 300 Hz. The sound absorption property of the material is predicted according to the flow-resistance model and the acoustic impedance model. The model calculation results are compared with measurement results. The results show that the polyester fiber material with flat cross-section has the best sound absorption property and the average sound absorption coefficient reaches 0.404; the measured sound absorption coefficient of the polyester fiber material with circular cross-section is in good agreement with the model calculation result, the error rate is 2.036% in the whole frequency range, but for the polyester fiber material with other cross-section shapes, the error is large.
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