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P06 / scientific study / published

Acid Diffusion, Mechanical Response and Wireless SHM

Mechanical and electromagnetic measurements converged on material degradation behaviour relevant to multimodal structural-health monitoring.

2020-2024Northumbria University, United Kingdom
NANOCOMPOSITE PHYSICS MAPAcid Diffusion, Mechanical Response and Wireless SHM
01CNT NETWORKdispersion / agglomeration / porosity
02TRANSPORTpercolation / tunnelling / diffusion
03MECHANICSmodulus / viscoelastic response
04EM RESPONSEconductivity / permittivity / loss
05CHARACTERIZATIONDMA / nanoindentation / VNA

A material-scale map from morphology to measurable physical behaviour.

01

Problem or Industrial Need

Harsh chemical environments create degradation gradients that require both local and bulk characterization to understand structural condition.

02

Engineering or Scientific Solution

A combined mechanical and electromagnetic study using DMA, nanoindentation and VNA measurements across CNT concentration and acid exposure.

03

Sebastian's Technical Contribution

Connected nanoscale and bulk mechanical behaviour with electromagnetic measurements to evaluate degradation and sensing relevance.

04

Methods and Tools Used

  • Dynamic mechanical analysis
  • Nanoindentation
  • VNA electromagnetic measurements
  • Comparative analysis across acid-exposure duration and CNT concentration
05

Prototype, Simulation and Experimental Evidence

experiment

Multimodal material characterization

Bulk, local and electromagnetic measurements evaluated the same degradation system.

publication

Applied Mechanics 2023

Peer-reviewed combined mechanical and electrical characterization study.

06

Measurable Result or Published Finding

Cross-domain measurement agreement

The study reported agreement between nanoindentation and VNA trends, supporting multimodal wireless-SHM development.

07

Diagrams and Publications

NANOCOMPOSITE PHYSICS MAPAcid Diffusion, Mechanical Response and Wireless SHM
01CNT NETWORKdispersion / agglomeration / porosity
02TRANSPORTpercolation / tunnelling / diffusion
03MECHANICSmodulus / viscoelastic response
04EM RESPONSEconductivity / permittivity / loss
05CHARACTERIZATIONDMA / nanoindentation / VNA

A material-scale map from morphology to measurable physical behaviour.

08

Role, Team Attribution, Institution and Project Context

Doctoral Researcher and co-author; experimental characterization, analysis and research communication.

Connected work

P012020-2024

Portable Microwave and Passive Wireless Sensing Platform

Problem
Conventional material-health assessment can require contact, disassembly or laboratory processing that limits continuous industrial monitoring.
Solution
A portable non-contact microwave sensing architecture that links passive RF structures, instrumentation, controlled positioning and computational analysis.
Evidence / result
1 integrated portable platform
RF architectureVNAchipless resonatorsPython
View system
P042020-2024

Free-Space Microwave Characterization of CNT/Epoxy

Problem
CNT concentration changes electrical and dielectric behaviour, but a contactless method is needed to assess how those changes alter microwave response.
Solution
A free-space patch-antenna characterization method combining VNA measurements with finite-element electromagnetic analysis.
Evidence / result
Distinct field-region behaviour
free-space measurementpatch antennasVNAFEM
View system
P052020-2024

Contactless Characterization under Acid Exposure

Problem
Chemical penetration can degrade CNT/epoxy structures while conventional inspection may require disassembly and extensive processing.
Solution
A contactless wireless method using microstrip-antenna scattering parameters, supported by multiscale electrical and porosity models.
Evidence / result
Wireless degradation signal
acid diffusionS11/S21VNAmultiscale modelling
View system