公开(公告)号：US5911158A

公开(公告)日：1999-06-08

申请号：US808365

申请日：1997-02-28

申请人： Douglas A. Henderson ,  Robert W. Gordon ,  Joseph W. Hollkamp ,  Gregory S. Agnes

发明人： Douglas A. Henderson ,  Robert W. Gordon ,  Joseph W. Hollkamp ,  Gregory S. Agnes

IPC分类号： G01L1/16 ,  G01L5/16 ,  G01L5/22 ,  G01M9/06 ,  G01N29/12 ,  G01N29/24 ,  G01N29/28 ,  G01H11/08

CPC分类号： G01N29/2437 ,  G01L1/16 ,  G01L5/167 ,  G01L5/228 ,  G01M9/06 ,  G01N29/12 ,  G01N29/28 ,  G01N2291/014 ,  G01N2291/02827 ,  G01N2291/106

摘要： An apparatus and method for determining the dynamic response of a physical structure is disclosed. A single sheet of a piezoelectric polymer film, preferably polyvinylidene fluoride, or PVDF, is coated on one side with a thin layer of conductive material to serve as a ground electrode. The other side of the sheet is coated with a thin layer or conductive material in a non-contiguous pattern of individual electrodes defining an array of discrete piezoelectric transducers. Sensor leads are connected to each individual electrode and lead to a signal processor which includes associated software for determining from the processed electrical signals relative strain amplitudes of the surface area of a physical structure onto which the sheet is attached. The resulting output can be used to record strain time histories for later processing or, more simply, to show the time-averaged, steady state strain response of a structure.

摘要翻译： 公开了一种用于确定物理结构的动态响应的装置和方法。 单层压电聚合物膜，优选聚偏二氟乙烯或PVDF，在一侧涂覆有导电材料的薄层，以用作接地电极。 片材的另一面用限定一组离散压电换能器的单独电极的非连续图案中的薄层或导电材料涂覆。 传感器引线连接到每个单独的电极并且通向信号处理器，该信号处理器包括相关联的软件，用于根据经处理的电信号确定片材所附着的物理结构的表面积的相对应变幅度。 所得到的输出可用于记录应变时间历史以供稍后处理，或者更简单地显示结构的时间平均稳态应变响应。