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http://dx.doi.org/10.5050/KSNVE.2015.25.2.116

Development of a Formula for Acoustic Transmission Loss According to Partition Positions in a Simple Expansion Chamber  

Park, Jeong-Pil (Graduate School of Mechanical Engineering, Pusan National University)
Bae, Kyeong-Won (Graduate School of Mechanical Engineering, Pusan National University)
Jeong, Weui-Bong (School of Mechanical Engineering, Pusan National University)
Ahn, Se-Jin (School of Mechanical&Electrical Engineering, Uiduk University)
Publication Information
Transactions of the Korean Society for Noise and Vibration Engineering / v.25, no.2, 2015 , pp. 116-123 More about this Journal
Abstract
This paper proposed a new formula for predicting acoustic power transmission loss of simple expansion chamber with two internal partitions. Seventeen cases of computational results were performed and the database was constructed for the TL according to the various positions of internal partitions. Using this database, firstly, the formula for the peak values of TL at certain frequencies was developed using the least square estimation. Secondly, the formula for the TL curve could be obtained automatically with the input data of the positions of two internal partitions. The formula of TL developed in this paper showed good agreement with computational results. This formula will be helpful for the positioning of internal partitions to improve TL at target frequencies.
Keywords
Simple Expansion Chamber; Silencer; Transmission Loss; Internal Partition; Least Square Estimation;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
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