Zobrazeno 1 - 3
of 3
pro vyhledávání: '"Men Qin Li"'
Publikováno v:
Advanced Materials Research. :1312-1317
Nonwoven fabrics possess good acoustics properties and are used widely in many fields. Based on the Zwikker and Kosten theory, this paper suggests a numerical method for calculating their acoustical absorption coefficient.
Publikováno v:
Advanced Materials Research. :1300-1303
Polyester fiber needle-punched nonwovens with different structures were manufactured and their sound absorption properties were examined using the standing wave tube method. The results show that the sound absorption property of the nonwovens depends
Publikováno v:
Advanced Materials Research. :1253-1256
Aramids fibers are among the best known of the high-performance, synthetic, organic fibers. Needle-punched nonwoven fabrics with various structures were manufactured and their physical properties, structure, thermal insulation property and acoustic a