Damage detection with piezoceramic actuators in thin steel structures

被引：5
|
作者：
Dinkler, Dieter [1 ]
Kowalsky, Ursula [1 ]
Schuster, Konrad [1 ]
机构：
[1] Tech Univ Carolo Wilhelmina Braunschweig, Inst Struct Anal, Braunschweig, Germany
来源：
MECHANICS OF ADVANCED MATERIALS AND STRUCTURES | 2008年 / 15卷 / 3-4期
关键词：
damage detection; finite-element-method; model updating; system identification; piezoelectric actuators; frequency response function; structural health monitoring;
D O I：
10.1080/15376490801907806
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
This paper deals with an online structural health monitoring (SHM) concept, which enables the detection of damages of structures in civil engineering. Piezoceramic elements are integrated into thin steel plates as actuators and sensors. They excite the structure and measure the dynamic system response. The presented data analysis concept is based on methods of system identification. The model-updating algorithm adapts the finite element model to the measuring data using an output residual, which is minimized using a least-squares method. The application of special indicators enables the localization and quantification of changes in structural behavior.
引用
收藏
页码：269 / 275
页数：7
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