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Integrated and Distribute Sensing Using Carbon Nanotube Yarns: A New Paradigm in Structural Health Monitoring

le 17 juillet 2015
11h00 à 12h00

Dr. Jandro L. Abot, Department of Mechanical Engineering, The Catholic University of America, interviendra à l'ENS de Cachan lors du séminaire du LMT.

Composite materials are widely used in aerospace structures and many other applications because of their superior specific stiffness and strength respect to weight.
However, monitoring their structural health still remains too complex and difficult to implement in an integrated and distributed way.

Carbon nanotubes yarns

This presentation is about integrated structural health monitoring in polymeric and composite materials using carbon nanotube yarns. Carbon nanotubes are grown into arrays that can be drawn into webs and further twisted into yarns that contain thousands of carbon nanotubes in their cross-sections.

These carbon nanotube yarns are lightweight, stiff, strong, ductile and electrically conductive fiber-like materials that we are studying as piezoimpedance-based sensors.

The concepts of real-time, integrated, and widely distributed damage detection and strain measurement using carbon nanotube yarn sensors are presented including the latest experimental and modeling results.
Determining the coupled mechanical, electrical and thermal response of the carbon nanotube yarns is of significant importance towards their use as sensors.

Recently obtained results are presented including a not-before observed negative piezoresistance response of unconstrained carbon nanotube yarns. The effect of the structure of carbon nanotube yarns and their boundary conditions on their coupled mechanical and electrical response are also discussed.

The present technical challenges and proposed approaches for robust real-time structural health monitoring that eventually leads to condition-based maintenance are outlined for structures, components and devices.

Dr Jandro L. Abot

Dr. Abot is an Associate Professor in the Department of Mechanical Engineering, Director of the Intelligent Materials laboratory, and Director of International Engineering Program Development of the School of Engineering at The Catholic University of America.

He was previously an Assistant Professor in the Department of Aerospace Engineering and Engineering Mechanics at the University of Cincinnati. Prior to that, he was a Postdoctoral Fellow at Northwestern University where he had received his Ph.D. and M.S. degrees in Theoretical and Applied Mechanics.

Dr. Abot also holds a 6-year degree in Structural Engineering from the Universidad de la República in Montevideo, Uruguay. Dr. Abot's expertise is on the science and technology of composite materials and structural health monitoring of structures using carbon nanotube-based sensors.

Dr. Abot authored or co-authored one hundred journal and proceeding papers and led research projects sponsored by AFOSR, NASA, and Fulbright and collaborated on projects sponsored by NSF, ONR, and industrial consortiums. Dr. Abot taught twenty different engineering courses in Solid Mechanics, Materials Engineering, Experimental Mechanics and Introduction to Mechanical and Aerospace Engineering, always receiving very good students' evaluations.

Dr. Abot is always committed to advising many graduate students and mentoring undergraduate students in the framework of research projects, and actively engaged in many departmental and school service activities such as recruitment, accreditation and international programs.
Type :
Séminaires - conférences
Lieu(x) :
Campus de Cachan
Amphi e-média
Bâtiment Léonard De Vinci de - ENS Cachan
61, avenue du Président Wilson 94230 Cachan
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