Mr. Hao Liu Profile

Hao Liu

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Proceedings Article | 19 April 2017 Presentation + Paper

Carbon nanotube-based structural health monitoring for fiber reinforced composite materials

Hao Liu, Kan Liu, Aris Mardirossian, Dirk Heider, Erik Thostenson

Proceedings Volume 10169, 101690H (2017) https://doi.org/10.1117/12.2262262

KEYWORDS: Composites, Carbon nanotubes, Structural health monitoring, Damage detection, Nanotechnology, Sensors, Dielectrics, Carbon, Wave propagation, Manufacturing

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In fiber reinforced composite materials, the modes of damage accumulation, ranging from microlevel to macro-level (matrix cracks development, fiber breakage, fiber-matrix de-bonding, delamination, etc.), are complex and hard to be detected through conventional non-destructive evaluation methods. Therefore, in order to assure the outstanding structural performance and high durability of the composites, there has been an urgent need for the design and fabrication smart composites with self-damage sensing capabilities. In recent years, the macroscopic forms of carbon nanotube materials have been maturely investigated, which provides the opportunity for structural health monitoring based on the carbon nanotubes that are integrated in the inter-laminar areas of advanced fiber composites. Here in this research, advanced fiber composites embedded with laminated carbon nanotube layers are manufactured for damage detection due to the relevant spatial electrical property changes once damage occurs. The mechanical-electrical coupling response is recorded and analyzed during impact test. The design and manufacturing of integrating the carbon nanotubes intensely affect the detecting sensitivity and repeatability of the integrated multifunctional sensors. The ultimate goal of the reported work is to develop a novel structural health monitoring method with the capability of reporting information on the damage state in a real-time way.

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