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July 3, 2026Defence TechnologyOpen Access

Electromechanical behavior of graphene-based multifunctional composites under quasi-static indentation and low-velocity impact tests aided by XCT analysis

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Authors

NANoora AlahmedJAJ. Jefferson AndrewWCWesley J. Cantwell

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Overview

Randomized trial examines electromechanical response of graphene composites under quasi-static indentation and impact, indicating potential for structural health monitoring.

Key Points

  • This study aims to investigate the electromechanical behavior of graphene-based composites under different loading conditions and their ability to sense internal damage.
  • Conducted quasi-static indentation (QSI) and low-velocity impact (LVI) tests on rGO-coated glass-fiber laminates.
  • Utilized X-ray Computed Tomography (XCT) for visualizing internal damage.
  • Analyzed piezoresistive behavior through fractional change in resistance during various loading scenarios.
  • Under monotonic QSI, sensors recorded FCR drops up to –90%, showing significant sensitivity to damage.
  • During LVI, peak forces reached ∼9.5 kN, with sensors detecting ongoing damage post-perforation.
  • XCT confirmed subsurface delamination and fiber fracture, correlating electromechanical signals to internal damage patterns.

Cite This Study

Alahmed et al. (2026) studied this question.

synapsesocial.com/papers/6a47540e5c29257aa2579eeahttps://doi.org/10.1016/j.dt.2026.06.022
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