利用壓電薄膜(PVDF)做為擾動性壓力量測之可行性研究

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Title:	利用壓電薄膜(PVDF)做為擾動性壓力量測之可行性研究
Other Titles:	Development of a pressure transducer for dynamic pressure measurement using piezoelectric foil
Authors:	盧博堅;蔡英輝
Contributors:	淡江大學水資源及環境工程學系
Keywords:	壓電薄膜;動態壓力量測;換能器;風洞;壓力擾動;感應器;Piezoelectric Foil;Dynamic Pressure Measurement;Transducer;Wind Tunnel;Pressure Fluctuation;Sensor
Date:	1991-12-13
Issue Date:	2010-01-11 16:49:46 (UTC+8)
Abstract:	空氣動力實驗,往往需要量測模型所受擾動性壓力的時間和空間分布。限於目前所使用的壓力計因其感應面的大小和靈敏度,無法與實驗模型的表面密合,尤其在曲面上更為困難。另一在量測多點壓力時,在有限空間裡無法安裝多個壓力計,即使可行其費用甚鉅。目前發展出的一種新材料叫壓電薄膜 ( Poly-vinylidene Fluoride,PVDF),可作為點和面壓力的量測,其厚度約為25.mu.m,可直接黏貼於受測物體表面而不擾動流場,又因其具相當好的柔軟性,可不受表面形狀的限制。此技術在國外正在發展試驗中。本研究即探討此種材料作為壓力量測之可行性。 In wind tunnel model experiments, it is common to measure the spatio-temperal surface fluctuating pressure field by means of pressure transducer. The size and sensitivity of the pressure transducer impose a limit on the spatial resolution of the pressure fluctuations. It is also difficult to mount the pressure transducer flush with the surface of the testing model with curve surface. Recently, a new developed piezoelectric film (Polyvinylidene Fluoride, PVDF) has been used for pressure sensor. However, it is still in the developing stage. The very thin (about 25.mu.m) and flexible foil can easily be mounted on a model with any curve surface without disturbing the flow. This makes the pressure measurements directly and less costly. The object of this paper is to develop the technique for the fluctuating pressure measurements using the piezoelectric foil.
Relation:	中華民國力學學會第十五屆全國力學會議論文集(一)=Proceedings of the 15th National Conference on Theoretical and Applied Mechanics (I)，頁357-363
Appears in Collections:	[Graduate Institute & Department of Water Resources and Environmental Engineering] Proceeding

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