Browsing by Author "Chen, Jinhu"

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    Carbon nanotube films spun from a gas phase reactor for manufacturing carbon nanotube film/carbon fibre epoxy hybrid composites for electrical applications
    (Elsevier, 2019-09-06) Chen, Jinhu; Lekawa-Raus, Agnieszka; Trevarthen, James; Gizewski, Tomasz; Lukawski, Damian; Hazra, Kalyan; Rahatekar, Sameer S.; Koziol, Krzysztof K. K.
    Working towards improvement of the electrical performance of carbon fibre (CF) reinforced polymer composites used in aircrafts, we have developed new routes of production of hybrid carbon nanotube (CNT)/CF epoxy composites. It was shown that the use of CNT films produced via one-step chemical vapour deposition (CVD) based method and in-process control of films morphology combined with standard vacuum bagging based manufacture of the composites results in very good electrical performance of the final material, delivering high potential for lightning strike related applications including electromagnetic interference (EMI) shielding and static dissipation for the composite components used in aerospace and transport sector. Simultaneously, the process is much simpler, inexpensive and easy to upscale than previously proposed methods.
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    Fabrication of Hi-Bi multi-core silica optical fibre preforms from dual-curing resins incorporating nano composites
    (IEEE, 2024-07-16) Al-Mamun, Md; Chen, Jinhu; Burda, Marek; Koziol, Krzysztof K.
    Additive manufacturing (AM) or three-dimensional (3D) printing stands out for its remarkable ability to manufacture custom-designed preforms for specialty silica optical fibres (SOFs) featuring sophisticated structures and diverse material compositions. Here, a novel scheme for manufacturing preforms for highly birefringent multi-core silica optical fibres (Hi-Bi MC SOFs) is proposed and tested using specially formulated dual-curing resins with AM technologies. These resins, incorporating nano composites (NCs), are ultraviolet (UV) and thermally cured to form fibre preforms in respective AM processes. Sample silica fibre preforms are successfully fabricated with holey cladding (Ti-doped, UV cured), multiple cores (Ge-Ti co-doped, thermally cured) and stress applying parts (SAPs, B-Al co-doped, thermally cured). As confirmed by X-ray diffraction (XRD) tests, these preforms can be consolidated into clear amorphous silica with the required structure and strength, demonstrating the potential of the proposed scheme in developing preforms for specialty fibres with custom-designed structures and materials required for sensing applications.