2006-08-012024-05-15https://scholars.lib.ntu.edu.tw/handle/123456789/663762摘要：本計畫主要探討非等向性平板的聲學性質，希望能進一步掌握FRP平板之聲音波傳特性及隔音效能。藉由本計畫的執行，期望對FRP使用量頗大同時又重視噪音品質的相關產業能有所貢獻。本計畫擬使用傳輸矩陣法計算平板的聲音穿透損失，FRP為異向性材料，第一年將以二維分析模型探討FRP平板，推導特殊非等向性材料的傳輸矩陣，進而求得其隔音性能，同時將建立駐波管式之隔音量測系統，以作為理論分析之驗證依據。在奠立基礎後，第二年擬以三維理論進行FRP平板之分析，此一理論將可考慮FRP材料在不同方向其材料性質不同的特性，能更準確地探討FRP材料之隔音性能。計畫中，將探討材料性質的異向性對隔音性能的影響，並以實驗互相印證，期望最終能成功研發出具備輕量化、高隔音性能之材料及FRP疊層組合。<br> Abstract: The purpose of this project is to investigate the sound characteristics of anisotropic materials. Look forward to understanding the acoustic properties and sound insulation of a FRP plate further. And also give some contribution to the industries that use FRP material widely and respect sound insulation. Transfer matrix method will be adopted in this work for calculating the sound transmission loss of anisotropic plates. FRP is an anisotropic material generally. In first year, an acoustic 2-D model of a FRP plate will be studied. This theory is only suitable for special orthotropic material such as Mat or SMC. The transfer matrix of a special orthotropic layer will be established. Additionally, to confirm the proposed theory, the experimental setup will be developed. Then, in second year, the 2-D theory will be extended to 3-D. This approach will suit for the acoustic analysis of general anisotropic FRP materials. Further, the influence of anisotropic properties on sound insulation of plate will be discussed. The result will be compared with experiment. The objective of this project is to develop a light material with excellent sound insulation.複合材料傳輸矩陣法穿透損失隔音FRPcomposite materialtransfer matrix methodtransmission losssound insulation