@Article{jrm.2021.014138,
AUTHOR = {Yipu Wang, Yonghua Wang, Zheming Liu, Huadong Yu, Jinkai Xu},
TITLE = {Effect of Plastocene Embedment in the Microperforated Plate on Its Acoustic Performance},
JOURNAL = {Journal of Renewable Materials},
VOLUME = {9},
YEAR = {2021},
NUMBER = {5},
PAGES = {923--941},
URL = {http://www.techscience.com/jrm/v9n5/41555},
ISSN = {2164-6341},
ABSTRACT = {Noise pollution is one of the contemporary environmental pollution,
which seriously damages people’s green and healthy life. In order to further
improve the low frequency sound absorption performance of microperforated
panel (MPP), a new plastocene coupled microperforated plate (PCMPP) is proposed. The acoustic properties of PCMPP with different apertures and perforation
ratio were measured by transfer function method and compared with that of conventional MPPs. It is found that when the aperture was 0.8 mm, the peak value of
sound absorption coefficient of PCMPP decreased by 150 Hz compared with
MPP. In a certain range, PCMPP with larger apertures showed a greater influence
on sound absorption property in low frequency. In addition, higher perforation
ratio led to a greater PCMPP bandwidth of sound absorption. On the other hand,
the effect of PCMPP with aperture of 0.2 mm on the performance of MPP was
reduced, which could be compensated by increasing the perforation ratio. Furthermore, we found that the effect of aperture, perforation ratio and cavity on
the sound absorption performance of PCMPP was consistent with that of ideal
rigid MPP. The step cooling curve showed that the plastocene began to soften
at about 50°C, representing a great potential for a non-high temperature
work environment.},
DOI = {10.32604/jrm.2021.014138}
}