Problem or Industrial Need
Chemical penetration can degrade CNT/epoxy structures while conventional inspection may require disassembly and extensive processing.
Engineering or Scientific Solution
A contactless wireless method using microstrip-antenna scattering parameters, supported by multiscale electrical and porosity models.
Sebastian's Technical Contribution
Investigated acid-exposure effects, performed RF measurements, developed the computational model and interpreted conductivity and porosity changes.
Methods and Tools Used
- Anechoic-chamber VNA measurements
- Microstrip-antenna S11/S21 analysis
- Acid-exposure comparison over time
- Multiscale conductivity, porosity and dielectric modelling
Prototype, Simulation and Experimental Evidence
Time-dependent RF response
Return and insertion loss were measured for control and acid-exposed specimens.
Multiscale material model
Conductivity and porosity changes reproduced the observed return-loss trend.
Composite Structures 2023
Peer-reviewed experimental and computational study.
Measurable Result or Published Finding
Wireless degradation signal
The published study found that acid diffusion altered return and insertion loss and supported contactless SHM potential.
Diagrams and Publications
A material-scale map from morphology to measurable physical behaviour.
A Contactless Characterization of CNT/Epoxy Nanocomposites Behavior under Acid Exposure
Wireless measurements and multiscale modelling connected acid diffusion with electrical, porosity and RF-response changes.
Role, Team Attribution, Institution and Project Context
Lead author and Doctoral Researcher; investigation, formal analysis, software and original writing.