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  • The influence of manufacturing technology on the fatigue and wear performance of cfrp gears [Elektronski vir]
    Bergant, Zoran ...
    In this study, an in-depth analysis of the fatigue and wear behaviour of carbon fibre reinforced polymer (CFRP) gears, fabricated via autoclave-process and vacuum infusion techniques is presented. ... The gears were tested in pair with a 42CrMo4 steel pinion and tested under nominal tooth bending stress ranging from 60-150 MPa. In-situ temperature monitoring was performed, using an infrared camera, and wear rates were regularly assessed. A finite element analysis was performed to examine the in-mesh contact and root stress behaviour of both new and worn gears at various loads and a specified running time. The results point to a substantial divergence from ideal meshing and stress conditions as the wear level is increased. Additionally, a comparison of the CFRP gears’ durability and dynamic strength with commonly used polymer and steel gears is presented. The results indicated that the CFRP gears exhibited superior performance compared to conventional plastic and composite short-fibrous polymer gears. The analysis was predominantly performed on an 8-layers composite configuration using standard plain weave carbon fabric, pre-impregnated with an ET445 resin. This composite configuration was further compared with two additional composite variants, namely an autoclave-cured prepreg variant with DT120 resin and a vacuum-impregnated configuration with an LG 900 UV resin. The analysis points to additional improvements when using the prepreg DT120 resin configuration.
    Source: ICFC9 [Elektronski vir] : the 9th International Conference on Fatigue of Composites, Vicenza (Italy) June 21-23, 2023 (Str. 1-13)
    Type of material - conference contribution ; adult, serious
    Publish date - 2023
    Language - english
    COBISS.SI-ID - 158937603

    Link(s):

    http://static.gest.unipd.it/ICFC9/data/uploads/bergant_paper-zb.pdf

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