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2023-05-11

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Si us plau utilitzeu sempre aquest identificador per citar o enllaçar aquest document: https://hdl.handle.net/2445/228729

THz-based monitoring of the deformation of the inner woven structure of glass fiber reinforcedpolymers

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Recurs relacionat

https://doi.org/10.1109/TTHZ.2023.3275278

Resum

This work exploits terahertz (THz) imaging in the real-space and the spatial-frequency domain to determine nondestructively the evolution of the main characteristics of a woven glass-fiber reinforced polymer laminate in three-dimensions in situ during a tensile test. These characteristics include tow orientation and the weave period. The surface and the inner plies can be investigated with the proposed method. The results show how the tows tend to realign with the load direction. In addition, we detect a decrease in the weave period, manifesting a distortion of the surface and inner layers as the stress is increased. Contrary to conventional optical inspection, THz inspection can provide quantitative measurements in all material layers and not only on the surface. This technique could be helpful to monitor distortion and damage due to mechanical stress or defects incorporated during the manufacturing process and to validate parameters and results of draping process modeling, especially for the inner plies.

Matèries

Deformacions (Mecànica), Plàstics, Fibres de vidre

Matèries (anglès)

Deformations (Mechanics), Plastics, Glass fibers

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Articles publicats en revistes (Ciència dels Materials i Química Física)

Citació

POMARÈDE, Pascal, et al. THz-based monitoring of the deformation of the inner woven structure of glass fiber reinforcedpolymers. IEEE Transactions on Terahertz Science and Technology. 2023. Vol. 13, num. 4, pags. 396-404. ISSN 2156-342X. [consulted: 4 of August of 2026]. Available at: https://hdl.handle.net/2445/228729

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