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題 名 | An Experimental Study of the Acoustic Wave Velocity Measurement of Liquids Using V(z) Curve in Acoustic Microscopy=以超音波顯微鏡V(z)曲線量測液體聲波波速 |
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作 者 | 吳政忠; 柴駿甫; 詹永嬌; | 書刊名 | 中國機械工程學刊 |
卷 期 | 18:1 1997.02[民86.02] |
頁 次 | 頁67-73 |
分類號 | 440.12 |
關鍵詞 | 超音波顯微鏡量測; V(z)曲線; 液體; 聲波; 波速; Acoustic microscopy; V(z) curve; Wave speed of liquid; Bio-fluids; |
語 文 | 英文(English) |
中文摘要 | 本文探討超音波顯微鏡量測技術中,V ( z )曲線高頻振盪訊號特徵及其在液 體波速量測中可能之應用。此 V ( z )曲線高頻振盪訊號在一般超音波顯微鏡量測中通常 被當成雜訊濾除。本研究結果顯示超音波頻率與此高頻振盪訊號週期之乘積與耦合液體之聲 波波速呈線性正比之關係。利用此結果,可以超音波顯微鏡量測一滴液體之聲波波速。此技 術可用於取得不易之生物液體,如關節液、血液等波速之量測。 |
英文摘要 | This paper presents a study of the secondary oscillation signals in the V ( z ) curve, which is usually filtered out in the standard V ( z ) analysis. A series of V ( z ) experiments for the determinations of the secondary oscillation periods △ Zs have been conducted with different liquid couplants as well as different solid samples. The results show that the product 2f △ Zs is a constnat and independent of the solid sample used. Fur-thermore, the results demonstrated that the constant 2f △ Zs is linearly proportional to the acoustic wave velocity of the liquid couplant. We noted that if the linear relationship is available, the acoustic wave velocity of a liquid can be determined through the V ( z ) measurements. One major advantage of the present method in determining the acoustic wave velocity of liquid is that only one drop of a liquid specimen is needed and thus the present method may find important application in the acoustic property measurements of bio-fluids. |
本系統中英文摘要資訊取自各篇刊載內容。