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January 17, 2019 | A step closer to SHM scale-up

Industrialisation SHM list
© Adobe stock - phaisarnwong2517

Integrated damage detection using guided elastic waves offers strong potential for the Structural Health Monitoring (SHM) of critical structures. Numerical simulation, which can be used to monitor the technique’s reliability, will soon be integrated into the CIVA non-destructive testing software suite.

The integration of permanent sensors into critical structures has sparked the emergence of new Structural Health Monitoring (SHM) systems. SHM systems can monitor a structure throughout its lifecycle, facilitating maintenance and extending the structure’s lifespan. Researchers at List* developed a new SHM system design application that uses a probabilistic approach to demonstrate SHM system reliability, a prerequisite for industrial scale-up.

The software developed simulates the propagation of elastic waves in structures so that the SHM system response can be evaluated for a large number of configurations (type and position of defects, structural variability, etc.). A NASA benchmark study revealed that the software can reduce the time required for these analyses from tens of hours to around ten minutes.

Once the new SHM module is integrated into CIVA, it will provide valuable support determining the optimal number and position for the sensors used to monitor an area. The advance will pave the way toward instrumented aircraft fuselages and critical pipework for the nuclear and oil & gas industries.

*List earned the prestigious Institut Carnot seal in 2006 (Institut Carnot TN@UPSaclay).

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