Integrity of in-service composite and structural health monitoring

Categories: Current Research


Composite structures are designed to withstand severe circumstances in terms of both mechanical loading (quasi static and dynamic) and environmental conditions. In both the short or long term this will eventually lead to the degradation of the structure. Monitoring and understanding the degradation mechanisms is fundamental to the development of composite materials.

We have developed an integrity assessment technique that takes advantage of the electrical conductivity in carbon fiber reinforced composite. Due to mechanical strain and damage accumulation the electric resistance or potential may vary. This can be detected using a specific electrode setup and design (electrode constitution, spatial disposition, current control, etc). We develop micromechanical modeling (influence of fiber realignment and corresponding contact changes, fiber breakage) and inverse approaches.

We also explore the durability and the change of properties of thermoplastic and thermoset composite materials subjected to hygroscopic and/or thermal loadings (including manufacturing), using embedded fiber Bragg gratings (FBG). We investigate solutions of structural health monitoring (SHM) technique based on surface bonded or embedded optical fiber sensors.




  • Dr. Matthieu Mulle (Research Scientist)
  • Prof. Gilles Lubineau (PI)
  • Dr. Arief Yudhanto (Research Scientist)

​Former member(s):

  • Dr. Angel Mora (Living in Mexico)
  • Dr. Khaled Almuhammadi (Engineer, Saudi Aramco)
  • Dr. Lakshmi Selvakumaran (Living in India)
  • Dr. Tushar Kanti Bera (Assistant Professor, National Institute of Technology Durgapur)
  • Dr. Mohamed Nasr Saleh (Postdoctoral Researcher, Delft University of Technology, The Netherlands)
  • Mohammad Subah (former KGSP student)
  • Nouf Alamri (former KGSP student)

Funding Agency: KAUST Baseline, SABIC

  1. M. Mulle, H. Wafai, A. Yudhanto, G. Lubineau, R. Yaldiz, W. Schijve, N. Verghese. Influence of process-induced shrinkage and annealing on the thermomechanical behavior of glass fiber-reinforced polypropylene. Composites Science and Technology. 170:183–189, 2019
  2. M. Mulle, A. Yudhanto, G. Lubineau, R. Yaldiz, W. Schijve, N. Verghese. Internal strain assessment using FBGs in a thermoplastic composite subjected to quasi-static indentation and low-velocity impact. Composite Structures. 215:305–316, 2019
  3. Khaled Almuhammadi, Arief Yudhanto, Gilles Lubineau. Real-time electrical impedance monitoring of carbon fiber-reinforced polymer laminates undergoing quasi-static indentation. Composite Structures. 207:255-263, 2019
  4. Khaled Almuhammadi, Arief Yudhanto, Gilles Lubineau. On the anisotropic behavior of electrodes for electrical-based monitoring of CFRP laminated composites. Polymer Composites. 40(5):2061-2066, 2019
  5. Khaled Almuhammadi, Tushar Kanti Bera, Gilles Lubineau. Electrical impedance spectroscopy for measuring the impedance response of carbon-fiber-reinforced polymer composite laminates. Composite Structures. 168:510-521, 2017
  6. ​Lakshmi Selvakumaran, Gilles Lubineau. Effect of voltage measurement on the quantitative identification of transverse cracks by electrical measurements. Sensors. 16(4):427, 2016
  7. M. Mulle, H. Wafai, A. Yudhanto, G. Lubineau, R. Yaldiz, W. Schijve. Process monitoring of glass reinforced polypropylene laminates using fiber Bragg gratings. Composites Science and Technology. 123:143-150, 2016
  8. Tushar Kanti Bera, J. Nagaraju, Gilles Lubineau. Electrical impedance spectroscopy (EIS)-based evaluation of biological tissue phantoms to study multifrequency electrical impedance tomography (Mf-EIT) systems. Journal of Visualization. 1-23, 2016
  9. Khaled Almuhammadi, Lakshmi Selvakumaran, Marco Alfano, Yang Yang, Tushar Kanti Bera, Gilles Lubineau. Laser-based surface preparation of composite laminates leads to improved electrodes for electrical measurements. Applied Surface Science. 359:388-397, 2015
  10. Lakshmi Selvakumaran, Quan Long, Serge Prudhomme, Gilles Lubineau. On the detectability of transverse cracks in laminated composites using electrical potential change measurements. Composite Structures. 121:237-246, 2015
  11. M. Mulle, A. Moussawi, G. Lubineau, S. Durand, D. Falandry, P. Olivier. Response of fiber Bragg gratings bonded on a glass/epoxy laminate subjected to static loadings. Composite Structures. 130:75–84, 2015
  12. Mohamed Nasr Saleh and Gilles Lubineau. Understanding the mechanisms that change the conductivity of damaged ITO-coated polymeric films: a micro-mechanical investigation. Solar Energy Materials and Solar Cells. 130:199-207, 2014