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Ravi Jatola, Amit Kumar Guptab
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- Assistant Professor, Assistant Professor, Department of Mechanical Engineering, SGSITS, Indore, Department of Mechanical Engineering, IET-DAVV, Madhya Pradesh, Madhya Pradesh, India, India
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Abstract
nAn exhaust system’s noise level can be reduced with the use of a muffler. There is general recognition that baffled exhaust mufflers reduce noise emissions and increase the loss of sound transmission. The reduction of sound transmission can be further achieved by inserting sound-absorbing materials inside the muffler. Exhaust muffler systems with strategically positioned baffles have been shown to effectively reduce noise emissions, thereby improving acoustic performance. Baffles divert and disrupt sound waves, reducing the amount of unwanted noise that is transmitted and fostering a more peaceful and controlled acoustic environment. Sound-absorbing materials being included into mufflers is a major advancement in noise reduction technology. The current research purpose is to explore the changes in internal design of muffler with control volume influence towards the acoustic sound transmission loss. The design parameters were altered with constant volume and their variation was evaluated. In this work, by changing the number and position of the baffle, perforation percentage in the central and in outlet pipe. It has been seen that what is the difference in the sound transmission loss and finally, the sound transmission loss has been measured by filling the sound absorbing material into the constant volume muffler and observed how much the sound transmission loss has increased.
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Keywords: 1-D analysis, Acoustics, Muffler, Sound Transmission Loss, Wave 1-D,
n[if 424 equals=”Regular Issue”][This article belongs to Journal of Polymer and Composites(jopc)]
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References
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[1] M. M. Salleh et al., “Parametric Analysis of Sound Transmission Loss in a Rectangular Duct Attached with Resonator Silencer,” Int. J. Nanoelectron. Mater., vol. 15, no. Special Issue, pp. 355–364, 2022.
[2] I. Deryabin and A. Krasnov, “Determination of the Characteristics of Noise-Reducing Materials for Motor Transport,” Transp. Res. Procedia, vol. 68, pp. 630–635, 2023, doi: https://doi.org/10.1016/j.trpro.2023.02.086.
[3] M. Guo, M. Y. Ni, R.-J. Shyu, J. S. Ji, and J. Huang, “Automated simulation for household road traffic noise exposure: Application and field evaluation in a high-density city,” Comput. Environ. Urban Syst., vol. 104, p. 102000, 2023, doi: https://doi.org/10.1016/j.compenvurbsys.2023.102000.
[4] Y. L, K. P. Prashanth, B. K. Venkatesha, S. Sanman, and N. Venkatesh, “Investigation of light weight closed cell metallic foam for noise reduction in automobile application,” Mater. Today Proc., vol. 54, pp. 359–365, 2022, doi: https://doi.org/10.1016/j.matpr.2021.09.308.
[5] A. Elsayed, C. Bastien, S. Jones, J. Christensen, H. Medina, and H. Kassem, “Investigation of baffle configuration effect on the performance of exhaust mufflers,” Case Stud. Therm. Eng., vol. 10, pp. 86–94, 2017, doi: 10.1016/j.csite.2017.03.006.
[6] Q. Zhang, “Sound transmission through micro-perforated double-walled cylindrical shells lined with porous material,” J. Sound Vib., vol. 485, p. 115539, 2020, doi: https://doi.org/10.1016/j.jsv.2020.115539.
[7] H. Arslan, M. Ranjbar, E. Secgin, and V. Celik, “Theoretical and experimental investigation of acoustic performance of multi-chamber reactive silencers,” Appl. Acoust., vol. 157, p. 106987, 2020, doi: 10.1016/j.apacoust.2019.07.035.
[8] A. Kashikar, R. Suryawanshi, N. Sonone, R. Thorat, and S. Savant, “Development of muffler design and its validation,” Appl. Acoust., vol. 180, p. 108132, 2021, doi: 10.1016/j.apacoust.2021.108132.
[9] M. Mohammad, M. F. Muhamad Said, M. H. Khairuddin, M. K. A Kadir, M. A. A. Dahlan, and T. Zaw, “Complex geometry automotive muffler sound transmission loss measurement by experimental method and 1D simulation correlation,” IOP Conf. Ser. Mater. Sci. Eng., vol. 884, no. 1, 2020, doi: 10.1088/1757-899X/884/1/012098.
[10] K. S. Won and J. Choe, “Transmission loss analysis in a partitioned duct with porous boundaries based on combination of FEM and measurement of sound absorption coefficients,” Appl. Acoust., vol. 165, p. 107291, 2020, doi: 10.1016/j.apacoust.2020.107291.
[11] J. W. Lee, “Optimal topology of reactive muffler achieving target transmission loss values: Design and experiment,” Appl. Acoust., vol. 88, pp. 104–113, 2015, doi: 10.1016/j.apacoust.2014.08.005.
[12] J. Y. Qian, L. Wei, G. R. Zhu, F. Q. Chen, and Z. J. Jin, “Transmission loss analysis of thick perforated plates for valve contained pipelines,” Energy Convers. Manag., vol. 109, pp. 86–93, 2016, doi: 10.1016/j.enconman.2015.11.058.
[13] Y. Philipson and M. S. Lawless, “Application of a dual stage exhaust system using expansion chambers for formula SAE,” Proc. Meet. Acoust., vol. 42, no. 1, 2020, doi: 10.1121/2.0001369.
[14] A. J. Torregrosa, A. Gil, L. M. García-Cuevas, P. Quintero, and F. D. Denia, “Prediction of the transmission loss in a flexible chamber,” J. Fluids Struct., vol. 82, pp. 134–153, 2018, doi: 10.1016/j.jfluidstructs.2018.07.003.
[15] D. P. Jena and S. N. Panigrahi, “Numerically estimating acoustic transmission loss of a reactive muffler with and without mean flow,” Meas. J. Int. Meas. Confed., vol. 109, pp. 168–186, 2017, doi: 10.1016/j.measurement.2017.05.065.
[16] Z. Zhang, X. Wang, Z. Y. Liu, Q. Fan, and T. R. Lin, “A study of low frequency sound insulation mechanism of a perforated plate-type acoustic metamaterial,” J. Sound Vib., vol. 558, p. 117775, 2023, doi: https://doi.org/10.1016/j.jsv.2023.117775.
[17] U. Chhibber, R. Kumar, S. Haldar, and R. N. Hota, “Design and analysis of a compact acoustic filter for broad band noise absorption,” Appl. Acoust., vol. 140, no. May, pp. 30–38, 2018, doi: 10.1016/j.apacoust.2018.05.011.
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| Volume | ||
| [if 424 equals=”Regular Issue”]Issue[/if 424][if 424 equals=”Special Issue”]Special Issue[/if 424] [if 424 equals=”Conference”][/if 424] | ||
| Received | January 6, 2024 | |
| Accepted | March 10, 2024 | |
| Published | May 4, 2024 |
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