DynStrainS - Dynamic strain sensors in structural health monitoring

Duration: February 2011 - February 2014

Promoter: Prof. Arnaud Deraemaeker from Universite Libre de Bruxelles

Local project team: Prof. Thierry J. Massart, Prof. S. Staquet, Dr. Maik Brehm, Dr. Grigorios Karaiskos, Gilles Tondreau

External collaborations:

Prof. G. Song, University of Houston, USA
Prof. K. Worden, University of Sheffield, UK
Dr. Ch. Farrar, Los Alamos National Laboratories, USA
Prof. E. Figuereido, Catholic University of Portugal
Prof. M. Coret, Ecole Centrale Nantes, France
Prof. J. Rethore, INSA Lyon, France
Prof. J. Turner, University of Nebraska, Lincoln, USA
Prof. G. Lombaerts, KULeuven, Belgium

Funded by Fonds de la Recherche de la Scientifique (FNRS).

Overview

The main aim of the project is to develop a fully automated data based damage localization system for concrete cracking. The system will consist in a very large network of dynamic strain sensors coupled to a data processing unit performing automated damage localization. The underlying goals are described as follows:

to design automated systems for data compression and interpretation in very large strain sensor networks
to develop a numerical platform for the prediction of the dynamic signature of damaged structures
to develop an expertise in dynamic strain sensing techniques applied to concrete structures
to create a center of excellence in the field of vibration based structural health monitoring in the French community in Belgium

Task 1: Numerical modeling of the impact of damage on the vibration signature

The task aims at developing numerical tools for the prediction of the dynamic response of a cracked structure.

Damage progress of a beam in a three-point bending test using a implicit gradient damage law Fig. 1: Damage progress of a beam in a three-point bending test using a implicit gradient damage law

Task 2: Efficient data processing for automated damage localization

The task consists in the development of techniques based on modal filtering for damage detection and localization.

Task 3: Instrumentation for dynamic strain sensing

This task consists in assessing the different technologies for dynamic strain sensing, with a focus on embedded sensing solutions for reinforced concrete.

Task 4: Validation of static and dynamic strain sensing

The goal of the task is to implement the most promising dynamic strain sensing techniques on a laboratory scale setup consisting of a concrete beam tested up to failure.

Task 5: Validation of the automated damage localization technique

The task consists in the implementation of the damage localization technique on a prestressed concrete beam

Generated publications

C. Dumoulin, G. Karaiskos, J. Carette, S. Staquet, and A. Deraemaeker. Monitoring of the ultrasonic p-wave velocity in early-age concrete with embedded piezoelectric transducers. Smart Materials and Systems, 21, 2012. 047001.

G. Tondreau and A. Deraemaeker. Local modal filters for automated data-based damage localization using ambient vibrations. Mechanical Systems and Signal Processing, 2012. submitted.

A. Deraemaeker and G. Tondreau. Comparison of damage localization based on modal filters using strain measurements and acceleration measurements. In Proc IWSHM 2011, Stanford, CA, Sept 2011.

A. Deraemaeker. Assessment of damage localization based on spatial filters using numerical crack propagation models. In Proc DAMAS 2011, Oxford, UK, July 2011.

M. Brehm, T.J. Massart, and A. Deraemaeker. Application of an updated notched beam model using an implicit gradient cracking approach for the purpose of damage detection based on dynamic strains. In Proc ISMA 2012, Leuven, Belgium, Sept 2012.

G. Tondreau and A. Deraemaeker. Multi-scale modal filters for early damage localization. In Proc ISMA 2012, Leuven, Belgium, Sept 2012.

M. Brehm, T.J. Massart, and A. Deraemaeker. Towards a more realistic representation of concrete cracking for the design of SHM systems: Updating and uncertainty evaluation of implicit gradient cracking models. In Proc EWSHM 2012, Dresden, Germany, July 2012.

C. Dumoulin, G. Karaiskos, J. Carette, S. Staquet, and A. Deraemaeker. Monitoring of the E-modulus in early age concrete since setting time with embedded piezoelectric transducers. In Proc Structural Faults and Repair 2012, Edinburgh, UK, July 2012.

G. Karaiskos, G. Tondreau, E. Figueiredo, C. Farrar, and A. Deraemaeker. Application of modal filters for damage detection in the presence of non-linearities. In Proc EWSHM 2012, Dresden, Germany, July 2012.

C. Dumoulin, G. Karaiskos, J. Carette, S. Staquet, and A. Deraemaeker. Monitoring of the ultrasonic P-wave velocity in early-age concrete using smart aggregates. In Proc CSNDD 2012, Marrakech, Morocco, May 2012.

M. Brehm, T.J. Massart, and A. Deraemaeker. Modeling of concrete cracking for the design of SHM systems: comparison of implicit gradient damage models and simplified linear representations. In Proc Framcos 2013, Toledo, Spain, March 2013.

C. Dumoulin, G. Karaiskos, and A. Deraemaeker. Monitoring of crack propagation in reinforced concrete beams using embedded piezoelectric transducers. In Proc Framcos 2013, Toledo, Spain, March 2013.