Drill-exit temperature characteristics in drilling of UD and MD CFRP composites based on infrared thermography

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    Drill-exit temperature characteristics in drilling of UD and MD CFRP composites based on infrared thermography. / Fu, Rao; Jia, Zhenyuan; Wang, Fuji; Jin, Yan; Sun, Dan; Yang, Lujia; Cheng, De.

    In: International Journal of Machine Tools and Manufacture, Vol. 135, 12.2018, p. 24-37.

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    @article{59b39b0fd3dc4b33bdcddbde03235aab,
    title = "Drill-exit temperature characteristics in drilling of UD and MD CFRP composites based on infrared thermography",
    abstract = "This paper presents a comprehensive study on the complex drill-exit temperature characteristics in the drilling of unidirectional (UD) and multidirectional (MD) CFRPs using a state-of-art microscopy infrared imaging system. For the first time, temperature variation and distribution at drill exit have been revealed in full detail, associated with the CFRP material properties and drilling conditions. Results suggest that the actual drill/CFRP interactions have critical but similar effects on the drill-exit temperatures for both types of CFRPs. Specifically, three distinct cutting regions with varying temperature characteristics are evident when the main cutting edge is acting on the drill exit material. In all cases, the temperature distribution features elliptical shape, of which the eccentricity depends on the lay-up sequence and the drilling depth. In addition, the real time temperature profiles and 2D/3D maximum temperature distribution maps are created with high visualization. With the aid of those findings, the relationships between drilling temperature maxima, their locations and drilling depths have been discovered and temperature effects on drill-exit damages are revealed for the first time. MD CFRP is proven more difficult than UD CFRP to achieve high drilling qualities at certain fiber cutting angles due to the associated temperature effects. Such important knowledge enables the identification of the heat affected zones and subsequently informs strategies for reducing the negative temperature effects.",
    keywords = "Drilling of CFRP, Drilling qualities, Temperature characteristics, Temperature effects, Thermal image",
    author = "Rao Fu and Zhenyuan Jia and Fuji Wang and Yan Jin and Dan Sun and Lujia Yang and De Cheng",
    year = "2018",
    month = "12",
    doi = "10.1016/j.ijmachtools.2018.08.002",
    language = "English",
    volume = "135",
    pages = "24--37",
    journal = "International Journal of Machine Tools and Manufacture",
    issn = "0890-6955",
    publisher = "Elsevier Limited",

    }

    RIS

    TY - JOUR

    T1 - Drill-exit temperature characteristics in drilling of UD and MD CFRP composites based on infrared thermography

    AU - Fu, Rao

    AU - Jia, Zhenyuan

    AU - Wang, Fuji

    AU - Jin, Yan

    AU - Sun, Dan

    AU - Yang, Lujia

    AU - Cheng, De

    PY - 2018/12

    Y1 - 2018/12

    N2 - This paper presents a comprehensive study on the complex drill-exit temperature characteristics in the drilling of unidirectional (UD) and multidirectional (MD) CFRPs using a state-of-art microscopy infrared imaging system. For the first time, temperature variation and distribution at drill exit have been revealed in full detail, associated with the CFRP material properties and drilling conditions. Results suggest that the actual drill/CFRP interactions have critical but similar effects on the drill-exit temperatures for both types of CFRPs. Specifically, three distinct cutting regions with varying temperature characteristics are evident when the main cutting edge is acting on the drill exit material. In all cases, the temperature distribution features elliptical shape, of which the eccentricity depends on the lay-up sequence and the drilling depth. In addition, the real time temperature profiles and 2D/3D maximum temperature distribution maps are created with high visualization. With the aid of those findings, the relationships between drilling temperature maxima, their locations and drilling depths have been discovered and temperature effects on drill-exit damages are revealed for the first time. MD CFRP is proven more difficult than UD CFRP to achieve high drilling qualities at certain fiber cutting angles due to the associated temperature effects. Such important knowledge enables the identification of the heat affected zones and subsequently informs strategies for reducing the negative temperature effects.

    AB - This paper presents a comprehensive study on the complex drill-exit temperature characteristics in the drilling of unidirectional (UD) and multidirectional (MD) CFRPs using a state-of-art microscopy infrared imaging system. For the first time, temperature variation and distribution at drill exit have been revealed in full detail, associated with the CFRP material properties and drilling conditions. Results suggest that the actual drill/CFRP interactions have critical but similar effects on the drill-exit temperatures for both types of CFRPs. Specifically, three distinct cutting regions with varying temperature characteristics are evident when the main cutting edge is acting on the drill exit material. In all cases, the temperature distribution features elliptical shape, of which the eccentricity depends on the lay-up sequence and the drilling depth. In addition, the real time temperature profiles and 2D/3D maximum temperature distribution maps are created with high visualization. With the aid of those findings, the relationships between drilling temperature maxima, their locations and drilling depths have been discovered and temperature effects on drill-exit damages are revealed for the first time. MD CFRP is proven more difficult than UD CFRP to achieve high drilling qualities at certain fiber cutting angles due to the associated temperature effects. Such important knowledge enables the identification of the heat affected zones and subsequently informs strategies for reducing the negative temperature effects.

    KW - Drilling of CFRP

    KW - Drilling qualities

    KW - Temperature characteristics

    KW - Temperature effects

    KW - Thermal image

    UR - http://www.scopus.com/inward/record.url?scp=85051649662&partnerID=8YFLogxK

    U2 - 10.1016/j.ijmachtools.2018.08.002

    DO - 10.1016/j.ijmachtools.2018.08.002

    M3 - Article

    VL - 135

    SP - 24

    EP - 37

    JO - International Journal of Machine Tools and Manufacture

    T2 - International Journal of Machine Tools and Manufacture

    JF - International Journal of Machine Tools and Manufacture

    SN - 0890-6955

    ER -

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