உருவ மூடி

Effect of membrane surface tension and backed-air gap distance on sound absorption characteristics

This paper describes the analysis on the sound absorption characteristics of semi-permeable membrane absorber. The effects of membrane surface tension and backed-air gap distance on the sound absorption characteristics were investigated. The characteristics of the membrane absorber were measured exp...

முழு விளக்கம்

Saved in:
நூற்பட்டியல் விவரங்கள்
தலைமை எழுத்தாளர்கள்: Zainulabidin, Muhd. Hafeez, Wan, L. M., Ismail, A. E., Kasron, M. Z., M. Kassim, A. S.
வடிவம்: கட்டுரை
வெளியீடப்பட்டது: Asian Research Publishing Network (ARPN) 2016
பகுதிகள்:
TD891-894 Noise and its control
நிகழ்நிலை அணுகல்:http://eprints.uthm.edu.my/8548/
குறியீடுகள்: குறிச்சொல் இணை
குறியீடுகள் இல்லை, இந்த குறிச்சொல்லை முதலில் பதிவு செய்யுங்கள்!
விளக்கம்
தொகுப்பு:This paper describes the analysis on the sound absorption characteristics of semi-permeable membrane absorber. The effects of membrane surface tension and backed-air gap distance on the sound absorption characteristics were investigated. The characteristics of the membrane absorber were measured experimentally in terms of Sound Absorption Coefficient, α and Noise Reduction Coefficient, NRC. The membrane is made of a thin, flexible, semi-permeable latex material and the tests were carried out by using impedance tube method according to ISO 10534-2 standard. The results showed that the surface tension has significant influence on the sound absorption characteristics. For the parameters used in the laboratory work, the specimen with un-stretched surface tension has the best absorption performance with 94% absorption at 1600 Hz. Membrane absorbers showed best performance at low-middle frequency region i.e. 1450-2000 Hz. The backed-air gap distances determine the location of sound absorption peak. The peak of absorption tends to shift to the lower frequency region when the air gap thickness is increased.

இதே போன்ற பொருட்கள்