In situ damage sensing in the glass fabric reinforced epoxy composites containing CNT–Al2O3 hybrids
Source abstract
Abstract
Abstract Damage sensing of the fiber-reinforced structural composites have attracted a lot of attention. In this work, a small amount of carbon nanotubes (CNT)-Al 2 O 3 hybrids are introduced into the woven glass fabric reinforced epoxy composites and serve as in situ sensor to monitor the damage initiation and propagation under mechanical loading. The hybrids with CNTs grown on the Al 2 O 3 micro-spheres are synthesized by chemical vapor deposition. The addition of 0.5 wt.% CNT–Al 2 O 3 increased ac electrical conductivity of the glass fabric/epoxy composites at 10 3 Hz 4–5 orders of magnitude in both in-plane and through-thickness directions. The electrical resistance of the composites was in situ measured under quasi-static tensile testing. With the increase of strain, the resistance response could be classified into three distinguished stages, corresponding to various damage modes (microcracks, fiber/matrix interfacial debonding, transverse cracks, delamination, fiber breakage, etc.).
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Smart Materials for Construction · Advanced Sensor and Energy Harvesting Materials · Conducting polymers and applications
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (29)
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