Quantification of tape deconsolidation during laser assisted fiber placement

    Research output: Contribution to conferencePaper

    Abstract

    Laser Assisted Fiber Placement (LAFP) is an additive manufacturing technique for thermoplastic composites, with the potential for in-situ consolidation. The achieved consolidation quality, however, is lower than obtained with conventional thermoplastic production techniques. One of the problems is the high interlaminar void content. Formation of interlaminar voids is related to intimate contact development, which is facilitated by a smooth tape surface. However, earlier experiments have shown that the tape might deconsolidate during the heating phase prior to the nip-point. As a result the roughness of the, initially smooth tape, might increase. Proper process modeling is only possible if this deconsolidation is taken into account. An elaborate investigation of the deconsolidation behavior is required. For this purpose an automated image analysis method was developed to characterize consolidation state of pre-preg tapes in terms of fiber, matrix and void distributions and surface roughness. This method enables statistical data collection, by automated analysis of a high number of microscopy images. Tapes were placed with reduced pressure, to capture the state of the tape before entering the nip-point. The consolidation state of the tape after the heating phase is characterized by an increased void content and, more im- portantly, an rough outer surface. The thickness of the rough outer layer of the tape increases with reducing consolidation quality. This quantitative characterization of the surface can be used in more accurate intimate contact development modeling.
    Original languageEnglish
    Publication statusPublished - 20 Apr 2017
    Event3rd International Symposium on Automated Composites Manufacturing, ACM 2017 - Montreal, Canada
    Duration: 20 Apr 201721 Apr 2017
    Conference number: 3

    Conference

    Conference3rd International Symposium on Automated Composites Manufacturing, ACM 2017
    Abbreviated titleACM
    CountryCanada
    CityMontreal
    Period20/04/1721/04/17

    Fingerprint

    Tapes
    Consolidation
    Fibers
    Lasers
    Thermoplastics
    3D printers
    Surface roughness
    Heating
    Image analysis
    Statistical methods
    Microscopic examination
    Composite materials
    Experiments

    Cite this

    Kok, T., Grouve, W. J. B., Warnet, L. L., & Akkerman, R. (2017). Quantification of tape deconsolidation during laser assisted fiber placement. Paper presented at 3rd International Symposium on Automated Composites Manufacturing, ACM 2017, Montreal, Canada.
    Kok, Thijs ; Grouve, Wouter J.B. ; Warnet, Laurent L. ; Akkerman, Remko . / Quantification of tape deconsolidation during laser assisted fiber placement. Paper presented at 3rd International Symposium on Automated Composites Manufacturing, ACM 2017, Montreal, Canada.
    @conference{7967607b6c35483eb43073b8734f4033,
    title = "Quantification of tape deconsolidation during laser assisted fiber placement",
    abstract = "Laser Assisted Fiber Placement (LAFP) is an additive manufacturing technique for thermoplastic composites, with the potential for in-situ consolidation. The achieved consolidation quality, however, is lower than obtained with conventional thermoplastic production techniques. One of the problems is the high interlaminar void content. Formation of interlaminar voids is related to intimate contact development, which is facilitated by a smooth tape surface. However, earlier experiments have shown that the tape might deconsolidate during the heating phase prior to the nip-point. As a result the roughness of the, initially smooth tape, might increase. Proper process modeling is only possible if this deconsolidation is taken into account. An elaborate investigation of the deconsolidation behavior is required. For this purpose an automated image analysis method was developed to characterize consolidation state of pre-preg tapes in terms of fiber, matrix and void distributions and surface roughness. This method enables statistical data collection, by automated analysis of a high number of microscopy images. Tapes were placed with reduced pressure, to capture the state of the tape before entering the nip-point. The consolidation state of the tape after the heating phase is characterized by an increased void content and, more im- portantly, an rough outer surface. The thickness of the rough outer layer of the tape increases with reducing consolidation quality. This quantitative characterization of the surface can be used in more accurate intimate contact development modeling.",
    author = "Thijs Kok and Grouve, {Wouter J.B.} and Warnet, {Laurent L.} and Remko Akkerman",
    year = "2017",
    month = "4",
    day = "20",
    language = "English",
    note = "3rd International Symposium on Automated Composites Manufacturing, ACM 2017, ACM ; Conference date: 20-04-2017 Through 21-04-2017",

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    Kok, T, Grouve, WJB, Warnet, LL & Akkerman, R 2017, 'Quantification of tape deconsolidation during laser assisted fiber placement' Paper presented at 3rd International Symposium on Automated Composites Manufacturing, ACM 2017, Montreal, Canada, 20/04/17 - 21/04/17, .

    Quantification of tape deconsolidation during laser assisted fiber placement. / Kok, Thijs ; Grouve, Wouter J.B.; Warnet, Laurent L.; Akkerman, Remko .

    2017. Paper presented at 3rd International Symposium on Automated Composites Manufacturing, ACM 2017, Montreal, Canada.

    Research output: Contribution to conferencePaper

    TY - CONF

    T1 - Quantification of tape deconsolidation during laser assisted fiber placement

    AU - Kok, Thijs

    AU - Grouve, Wouter J.B.

    AU - Warnet, Laurent L.

    AU - Akkerman, Remko

    PY - 2017/4/20

    Y1 - 2017/4/20

    N2 - Laser Assisted Fiber Placement (LAFP) is an additive manufacturing technique for thermoplastic composites, with the potential for in-situ consolidation. The achieved consolidation quality, however, is lower than obtained with conventional thermoplastic production techniques. One of the problems is the high interlaminar void content. Formation of interlaminar voids is related to intimate contact development, which is facilitated by a smooth tape surface. However, earlier experiments have shown that the tape might deconsolidate during the heating phase prior to the nip-point. As a result the roughness of the, initially smooth tape, might increase. Proper process modeling is only possible if this deconsolidation is taken into account. An elaborate investigation of the deconsolidation behavior is required. For this purpose an automated image analysis method was developed to characterize consolidation state of pre-preg tapes in terms of fiber, matrix and void distributions and surface roughness. This method enables statistical data collection, by automated analysis of a high number of microscopy images. Tapes were placed with reduced pressure, to capture the state of the tape before entering the nip-point. The consolidation state of the tape after the heating phase is characterized by an increased void content and, more im- portantly, an rough outer surface. The thickness of the rough outer layer of the tape increases with reducing consolidation quality. This quantitative characterization of the surface can be used in more accurate intimate contact development modeling.

    AB - Laser Assisted Fiber Placement (LAFP) is an additive manufacturing technique for thermoplastic composites, with the potential for in-situ consolidation. The achieved consolidation quality, however, is lower than obtained with conventional thermoplastic production techniques. One of the problems is the high interlaminar void content. Formation of interlaminar voids is related to intimate contact development, which is facilitated by a smooth tape surface. However, earlier experiments have shown that the tape might deconsolidate during the heating phase prior to the nip-point. As a result the roughness of the, initially smooth tape, might increase. Proper process modeling is only possible if this deconsolidation is taken into account. An elaborate investigation of the deconsolidation behavior is required. For this purpose an automated image analysis method was developed to characterize consolidation state of pre-preg tapes in terms of fiber, matrix and void distributions and surface roughness. This method enables statistical data collection, by automated analysis of a high number of microscopy images. Tapes were placed with reduced pressure, to capture the state of the tape before entering the nip-point. The consolidation state of the tape after the heating phase is characterized by an increased void content and, more im- portantly, an rough outer surface. The thickness of the rough outer layer of the tape increases with reducing consolidation quality. This quantitative characterization of the surface can be used in more accurate intimate contact development modeling.

    M3 - Paper

    ER -

    Kok T, Grouve WJB, Warnet LL, Akkerman R. Quantification of tape deconsolidation during laser assisted fiber placement. 2017. Paper presented at 3rd International Symposium on Automated Composites Manufacturing, ACM 2017, Montreal, Canada.