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題 名 | 中空板材隔音罩應用於機電系統之隔音性能分析=Implementation Analysis of Hollow Acoustic Panel in the Electromechanical System |
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作 者 | 藍天雄; 陳維亞; 簡守謙; | 書刊名 | 台電工程月刊 |
卷 期 | 660 2003.08[民92.08] |
頁 次 | 頁99-108 |
分類號 | 441.576 |
關鍵詞 | 隔音罩; 吸音率; 聲音穿透損失值; 聲音介入損失值; Acoustic hood; Sound absorption coefficient; Sound transmission loss; Sound insertion loss; |
語 文 | 中文(Chinese) |
中文摘要 | 噪音控制在機電系統中尤為重要,不僅危害工業衛生,更甚影響維修作業與安 全;隔音罩的設計成本、使用壽命及吸音性能等相關問題已受業界普遍重視。本研究中空板 材隔音罩取代傳統之金屬吸音板材隔音罩,分析並控討三種中空板材的吸音與阻音特性;首 先以理論式推導隔音罩內外的音場,並建立中空板材在每個頻率下的理論吸音率;再以實驗 方法取一風機音源實例置於製作之小型中空板隔音罩內,利用中空板內部的空氣層結構,作 吸阻音的控制,針對空氣與棉絮兩種不同介質,實驗測量並記錄其改為前後的減音效果,進 而將實測的隔音罩內外音壓位準代入理論吸音率模式,以反推得中空板材的吸音率。本研究 僅建立一套結合數學模式與音量量測實驗簡易中空板材吸音率推導方法,同時以實驗方法比 較分析三種不同構造之中空板材對隔音-聲音穿透損失值(STL)及吸音效果的優劣差異,進 而比較中空板材隔音罩與傳統金屬板隔音罩的隔音性能優劣,俾提供一套實務應用的有效設 計參考依據。 |
英文摘要 | Noise control is important and essential in the electromechanical system where the industrial health, system where the industrial health, system maintenance, and operation safety are significantly considered. Therefore, the design expense and the endurance limit of the acoustic hood are broadly focused in industry. In this study, three types of hollow PC panels are introduced as the acoustic hoods, and the sound absorbing as well as the insulation. Those characteristics are experimentally addressed and compared to the traditional acoustic hood, and the sound absorbing as well as the insulation. Those characteristics are experimentally addressed and compared to the traditional acoustic hood with absorbing wool. The theoretical modeling and the sound absorption coefficient under various frequencies for the hollow panels are theoretically constructed as the primary criterion. Additionally, a noise source from the real-world electromechanical system is selected and motivated in a designed hollow hood for the experimental research. With the laminar flow of the air in the hollow panel, the sound absorbing and insulation are then manipulated. Moreover, different fillings (air and wool) in the hollow panel are studied and compared for the effectiveness in noise insulation, and the experimental sound power level is introduced into the theoretical sound absorption modeling. The sound absorption coefficient of the hollow acoustic panel is furthermore inversely obtained. This paper surely contributes a simple and concrete modeling of sound insulation for hollow acoustic panels, and provides the comparison for the three types of acoustic panels in sound transmission loss and sound insertion loss. The adaptability and applicability of the hollow acoustic panel are found worthy to be extended through this study. |
本系統中英文摘要資訊取自各篇刊載內容。