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  • Measurement and evaluation of hole attributes for drilling CFRP composites using an indigenously developed cryogenic machining facility
    Khanna, Navneet ...
    This study compares drilling performances of carbon fibre reinforced plastic (CFRP) composites under dry and cryogenic environments. Industry-relevant outcomes namely thrust force, hole quality ... (cylindricity-CYL, circularity-CIR, and average surface roughness-R [sub] a) and inverse delamination factor, are analysed to adopt a green machining technique. Measurement of industry-relevant hole quality parameters have not been explored and explained for cryogenic machining of CFRP composites. To measure CYL and CIR deviations, points are selected on the chosen plane(s) with a spherical probe of the coordinate measuring machine. A pitch of 1 [mikro] m is taken between two neighboring points for measurement. R [sub] a values are measured using surface roughness tester, and inverse delamination factors are measured using a vision measurement machine. R [sub] a values of holes are considerably decreased by 14-38%, and entry inverse delamination factor increased by 5-68% under cryogenic drilling when compared with dry drilling. These results advocate the suitability of cryogenic drilling for the industry.
    Vir: Measurement : journal of the International Measurement Confederation. - ISSN 0263-2241 (Vol. 154, Mar. 2020, str. 1-11)
    Vrsta gradiva - članek, sestavni del
    Leto - 2020
    Jezik - angleški
    COBISS.SI-ID - 17046555

    Povezava(-e):

    https://www.sciencedirect.com/science/article/pii/S0263224120300415#!
    DOI

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