Piezo Sensors (PZT) vs Fiber Bragg Grating (FBG) Sensors in Structural Health Monitoring

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An interesting new research paper on this subject was published recently by the Institute for Construction Science and the Department of Structural Mechanics, Technical University of Madrid, Spain.

They compared the two methods on Carbon Fiber Reinforced Polymers (CFRP) composites for repairing and strengthening structures in service. The bottom line was that PZT sensors with impedance-based direct analysis provide more detailed information on the location of a structural problem.

Experimental setup for the reinforced concrete beams externally strengthened with CFRP. (Image: http://materconstrucc.revistas.csic.es)
Experimental setup for the reinforced concrete beams externally strengthened with CFRP. (Image: http://materconstrucc.revistas.csic.es/index.php/materconstrucc/article/viewArticle/1989/2448)

 

DuraAct flexible piezo patch transducer (Image: PI Ceramic)
DuraAct flexible piezo patch transducer (Image: PI Ceramic)

The full research paper is available here >

 

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PI (Physik Instrumente) is a leading manufacturer of precision motion control equipment, piezo motors, air bearing stages and hexapod parallel-kinematics for semiconductor applications, photonics, bio-nano-technology and medical engineering. PI has been developing and manufacturing standard & custom precision products with piezoceramic and electromagnetic drives for 4 decades. The company has been ISO 9001 certified since 1994 and provides innovative, high-quality solutions for OEM and research. PI is present worldwide with fifteen subsidiaries, R&D / engineering on 3 continents and total staff of more than 1,000.

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