Use of Piezoelectric Films in Detecting and Monitoring Damage in Composites
Use of Piezoelectric Films in Detecting and Monitoring Damage in Composites
复制标题
使用压电薄膜检测和监测复合材料的损伤
DOI：
10.1177/1045389x9300400305
复制
发表时间：
1993
影响因子：
2.7
通讯作者：
J. Paul
中科院分区：
文献类型：
--
作者：
S. Galea;W. Chiu;J. Paul
在过去的几年里，对智能材料系统和结构的日益重视导致了嵌入式和粘结式传感器和执行器领域的大量研究工作。在众多可用的传感材料中，压电式传感器具有许多优点。传感器输出与大面积表面位移的变化成正比，可以用来解释结构和材料属性的变化，例如材料的顺应性。这种类型的传感器也被用作超声波换能器。它具有结构阻抗低的优点，因此可以准确地测量面积的变化，因此只能用作柔性结构系统的执行器。本文的目的是展示压电薄膜传感器作为复合材料结构完整性监测装置的用途。到目前为止，测试的目的是检测和监测复合材料中的冲击损伤，以及检测复合材料与金属机械连接接头的损伤。
The increasing emphasis over the past few years on intelligent material systems and structures has resulted in a significant research effort in the areas of embedded and bonded sensors and actuators. Of the many sensing materials available, piezoelectric sensors offer a number of ad vantages. The sensor output, proportional to changes in surface displacement over a large area, can be used to interpret variations in structural and material properties, e.g., the compliance of the material. This type of sensor has also been used as an ultrasonic transducer. It offers the advantage of having a low structural impedance, thus giving an accurate measurement of the change in area, and consequently can only be used as an actuator on flexible structural systems. The aim of this article is to demonstrate the use of piezoelectric film sensors as a structural integrity monitoring device for composite materials. Tests to date have been aimed at detecting and monitoring impact damage in composite materials, as well as detecting damage in composite-to-metal mechanically fastened joints.