Autonomous hardware development for impedance-based structural health monitoring

被引:21
作者
Grisso, Benjamin L. [1 ]
Inman, Daniel J. [1 ]
机构
[1] Virginia Polytech Inst & State Univ, Ctr Intelligent Mat Syst & Struct, Blacksburg, VA 24061 USA
关键词
structural health monitoring; impedance method; damage detection; digital signal processor; wireless monitoring; wireless sensing unit;
D O I
10.12989/sss.2008.4.3.305
中图分类号
TU [建筑科学];
学科分类号
0813 ;
摘要
The development of a digital signal processor based prototype is described in relation to continuing efforts for realizing a fully self-contained active sensor system utilizing impedance-based structural health monitoring. The impedance method utilizes a piezoelectric material bonded to the structure under observation to act as both an actuator and sensor. By monitoring the electrical impedance of the piezoelectric material, insights into the health of the structured can be inferred. The active sensing system detailed in this paper interrogates a structure utilizing a self-sensing actuator and a low cost impedance method. Here, all the data processing, storage, and analysis is performed at the sensor location. A wireless transmitter is used to communicate the current status of the structure. With this new low cost, field deployable impedance analyzer, reliance on traditional expensive, bulky, and power consuming impedance analyzers is no longer necessary. A complete power analysis of the prototype is performed to determine the validity of power harvesting being utilized for self-containment of the hardware. Experimental validation of the prototype on a representative structure is also performed and compared to traditional methods of damage detection.
引用
收藏
页码:305 / 318
页数:14
相关论文
共 17 条
[1]   Damage detection by applying statistical methods to PZT impedance measurements [J].
Allen, DW ;
Peairs, DM ;
Inman, DJ .
SMART STRUCTURES AND MATERIALS 2004: SMART STRUCTURES AND INTEGRATED SYSTEMS, 2004, 5390 :513-520
[2]  
[Anonymous], J STRUCTURAL CONTROL
[3]  
GRISSO BL, 2005, P IMAC 22 ORL FL JAN
[4]   AN IMPEDANCE METHOD FOR DYNAMIC ANALYSIS OF ACTIVE MATERIAL SYSTEMS [J].
LIANG, C ;
SUN, FP ;
ROGERS, CA .
JOURNAL OF VIBRATION AND ACOUSTICS-TRANSACTIONS OF THE ASME, 1994, 116 (01) :120-128
[5]  
Lynch J. P., 2006, Shock and Vibration Digest, V38, P91, DOI 10.1177/0583102406061499
[6]   Design of a wireless active sensing unit for structural health monitoring [J].
Lynch, JP ;
Sundararajan, A ;
Law, KH ;
Sohn, H ;
Farrar, CR .
HEALTH MONITORING AND SMART NONDESTRUCTIVE EVALUATION OF STRUCTURAL AND BIOLOGICAL SYSTEM III, 2004, 5394 :157-168
[7]  
MASCARENAS DL, 2006, P SPIES 13 ANN INT S, V6177
[8]  
Park G., 2003, SHOCK VIBRATION DIGE, V35, P451, DOI DOI 10.1177/05831024030356001
[9]   Improving accessibility of the impedance-based structural health monitoring method [J].
Peairs, DM ;
Park, G ;
Inman, DJ .
JOURNAL OF INTELLIGENT MATERIAL SYSTEMS AND STRUCTURES, 2004, 15 (02) :129-139
[10]  
*RAD INC, 2005, UHF NARROW BAND FM M