Numerical modelling and simulations for optimal sensor location in damage detection with Lamb waves

2007 ◽  
Author(s):  
Boon C. Lee ◽  
Wieslaw J. Staszewski
Keyword(s):  
Numerical Modelling ◽  
Damage Detection ◽  
Lamb Waves ◽  
Sensor Location ◽  
Modelling And Simulations ◽  
Optimal Sensor Location

Entropy-based optimal sensor location for structural damage detection

1998 ◽  
Author(s):  
James L. Beck ◽  
Costas Papadimitriou ◽  
Siu-Kui Au ◽  
Michael W. Vanik
Keyword(s):  
Damage Detection ◽  
Structural Damage ◽  
Structural Damage Detection ◽  
Sensor Location ◽  
Optimal Sensor Location

Damage Monitoring in Realistic Structures Using Lamb Waves

2012 ◽  
Vol 185 ◽  
pp. 99-101
Author(s):  
W.H. Ong ◽  
Wing Kong Chiu
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Lamb Waves ◽  
Sensor Location ◽  
Element Analysis ◽  
Skin Structure ◽  
Damage Monitoring ◽  
Stiffening Ribs ◽  
Wing Skin ◽  
Optimal Sensor Location

This paper describes a technique, quantifying the differences in waveforms between damaged and undamaged states to measure damage severity. The technique has been verified experimentally and demonstrated promise in detecting and quantifying subsurface defects. Finite element analysis (FEA) has been performed alongside as a valid model may avoid time consuming and expensive experiments. Testing is first performed on a simple flat plate and a realistic wing skin structure with geometry such as stiffening ribs. This revealed geometry will alter the regions of scatter which leads queries over optimal sensor location. It was also discovered actuator location may not necessarily be intuitive. The comparisons made here show that implementation of an ISHM system on real world subjects is feasible despite added complexity.

scholarly journals Structural Damage Detection Using Modal Norms

1999 ◽  
Author(s):  
Wodek Gawronski ◽  
Jerzy T. Sawicki
Keyword(s):  
Damage Detection ◽  
Structural Damage ◽  
Structural Damage Detection ◽  
Sensor Location ◽  
Damage Location

Abstract A modal H2 norm is used to detect structural damages. The norm is determined for each sensor location, and for modal modes of interest. The sensor norm detects the damage location, the modal norm detect the most damaged mode.

Damage detection in concrete structures using a simultaneously activated multi-mode PZT active sensing system: numerical modelling

2013 ◽  
Vol 10 (11) ◽  
pp. 1451-1468 ◽  
Author(s):  
Costas P. Providakis ◽  
Kalliopi D. Stefanaki ◽  
Maristella E. Voutetaki ◽  
Yiannis Tsompanakis ◽  
Maria Stavroulaki
Keyword(s):  
Numerical Modelling ◽  
Damage Detection ◽  
Concrete Structures ◽  
Active Sensing ◽  
Sensing System ◽  
Multi Mode
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