Damage Precursor Indicator for Aluminum 7075-T6 Based on Nonlinear Dynamics

R. Haynes, Ed Habtour, Todd C. Henry, Daniel P. Cole, Volker Weiss, Antonios Kontsos, Brian Wisner

    Research output: Chapter in Book/Report/Conference proceedingConference contributionAcademicpeer-review

    Abstract

    In this work, a damage precursor indicator for aluminum 7075-T6 is proposed based on the nonlinear dynamics of a cantilevered beam system. A shouldered beam specimen is used to move the region of highest stress away from the clamped end. The beam is subject to harmonic base excitation in a uniaxial shaker. Fatigue damage accumulates in the beam with damage forming most quickly in the region of highest stress. By monitoring the tip deflection, changes in the natural frequency and response to a given excitation are correlated to fatigue life. Despite the absence of large-scale cracks, detectable changes in the nonlinear dynamics are discovered. The nonlinear dynamic parameters are estimated capturing the change in the forward and backward nonlinear sine sweeps. These changes could lend themselves to being a trackable damage precursor. The presence of microstructural precursors are confirmed using nanoindentation.
    LanguageEnglish
    Title of host publicationNonlinear Dynamics, Volume 1
    Subtitle of host publicationProceedings of the 36th IMAC, A Conference and Exposition on Structural Dynamics 2018
    EditorsGaetan Kerschen
    PublisherSpringer
    Pages303-313
    Volume1
    Publication statusPublished - 2019

    Publication series

    NameConference Proceedings of the Society for Experimental Mechanics Series

    Fingerprint

    Aluminum
    Fatigue damage
    Nanoindentation
    Natural frequencies
    Fatigue of materials
    Cracks
    Monitoring

    Cite this

    Haynes, R., Habtour, E., Henry, T. C., Cole, D. P., Weiss, V., Kontsos, A., & Wisner, B. (2019). Damage Precursor Indicator for Aluminum 7075-T6 Based on Nonlinear Dynamics. In G. Kerschen (Ed.), Nonlinear Dynamics, Volume 1: Proceedings of the 36th IMAC, A Conference and Exposition on Structural Dynamics 2018 (Vol. 1, pp. 303-313). (Conference Proceedings of the Society for Experimental Mechanics Series). Springer.
    Haynes, R. ; Habtour, Ed ; Henry, Todd C. ; Cole, Daniel P. ; Weiss, Volker ; Kontsos, Antonios ; Wisner, Brian. / Damage Precursor Indicator for Aluminum 7075-T6 Based on Nonlinear Dynamics. Nonlinear Dynamics, Volume 1: Proceedings of the 36th IMAC, A Conference and Exposition on Structural Dynamics 2018. editor / Gaetan Kerschen. Vol. 1 Springer, 2019. pp. 303-313 (Conference Proceedings of the Society for Experimental Mechanics Series).
    @inproceedings{34fe131018774459aef7e5fd52504463,
    title = "Damage Precursor Indicator for Aluminum 7075-T6 Based on Nonlinear Dynamics",
    abstract = "In this work, a damage precursor indicator for aluminum 7075-T6 is proposed based on the nonlinear dynamics of a cantilevered beam system. A shouldered beam specimen is used to move the region of highest stress away from the clamped end. The beam is subject to harmonic base excitation in a uniaxial shaker. Fatigue damage accumulates in the beam with damage forming most quickly in the region of highest stress. By monitoring the tip deflection, changes in the natural frequency and response to a given excitation are correlated to fatigue life. Despite the absence of large-scale cracks, detectable changes in the nonlinear dynamics are discovered. The nonlinear dynamic parameters are estimated capturing the change in the forward and backward nonlinear sine sweeps. These changes could lend themselves to being a trackable damage precursor. The presence of microstructural precursors are confirmed using nanoindentation.",
    author = "R. Haynes and Ed Habtour and Henry, {Todd C.} and Cole, {Daniel P.} and Volker Weiss and Antonios Kontsos and Brian Wisner",
    year = "2019",
    language = "English",
    volume = "1",
    series = "Conference Proceedings of the Society for Experimental Mechanics Series",
    publisher = "Springer",
    pages = "303--313",
    editor = "Gaetan Kerschen",
    booktitle = "Nonlinear Dynamics, Volume 1",

    }

    Haynes, R, Habtour, E, Henry, TC, Cole, DP, Weiss, V, Kontsos, A & Wisner, B 2019, Damage Precursor Indicator for Aluminum 7075-T6 Based on Nonlinear Dynamics. in G Kerschen (ed.), Nonlinear Dynamics, Volume 1: Proceedings of the 36th IMAC, A Conference and Exposition on Structural Dynamics 2018. vol. 1, Conference Proceedings of the Society for Experimental Mechanics Series, Springer, pp. 303-313.

    Damage Precursor Indicator for Aluminum 7075-T6 Based on Nonlinear Dynamics. / Haynes, R.; Habtour, Ed; Henry, Todd C.; Cole, Daniel P.; Weiss, Volker; Kontsos, Antonios; Wisner, Brian.

    Nonlinear Dynamics, Volume 1: Proceedings of the 36th IMAC, A Conference and Exposition on Structural Dynamics 2018. ed. / Gaetan Kerschen. Vol. 1 Springer, 2019. p. 303-313 (Conference Proceedings of the Society for Experimental Mechanics Series).

    Research output: Chapter in Book/Report/Conference proceedingConference contributionAcademicpeer-review

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    AU - Haynes, R.

    AU - Habtour, Ed

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    AU - Kontsos, Antonios

    AU - Wisner, Brian

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    N2 - In this work, a damage precursor indicator for aluminum 7075-T6 is proposed based on the nonlinear dynamics of a cantilevered beam system. A shouldered beam specimen is used to move the region of highest stress away from the clamped end. The beam is subject to harmonic base excitation in a uniaxial shaker. Fatigue damage accumulates in the beam with damage forming most quickly in the region of highest stress. By monitoring the tip deflection, changes in the natural frequency and response to a given excitation are correlated to fatigue life. Despite the absence of large-scale cracks, detectable changes in the nonlinear dynamics are discovered. The nonlinear dynamic parameters are estimated capturing the change in the forward and backward nonlinear sine sweeps. These changes could lend themselves to being a trackable damage precursor. The presence of microstructural precursors are confirmed using nanoindentation.

    AB - In this work, a damage precursor indicator for aluminum 7075-T6 is proposed based on the nonlinear dynamics of a cantilevered beam system. A shouldered beam specimen is used to move the region of highest stress away from the clamped end. The beam is subject to harmonic base excitation in a uniaxial shaker. Fatigue damage accumulates in the beam with damage forming most quickly in the region of highest stress. By monitoring the tip deflection, changes in the natural frequency and response to a given excitation are correlated to fatigue life. Despite the absence of large-scale cracks, detectable changes in the nonlinear dynamics are discovered. The nonlinear dynamic parameters are estimated capturing the change in the forward and backward nonlinear sine sweeps. These changes could lend themselves to being a trackable damage precursor. The presence of microstructural precursors are confirmed using nanoindentation.

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    T3 - Conference Proceedings of the Society for Experimental Mechanics Series

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    BT - Nonlinear Dynamics, Volume 1

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    Haynes R, Habtour E, Henry TC, Cole DP, Weiss V, Kontsos A et al. Damage Precursor Indicator for Aluminum 7075-T6 Based on Nonlinear Dynamics. In Kerschen G, editor, Nonlinear Dynamics, Volume 1: Proceedings of the 36th IMAC, A Conference and Exposition on Structural Dynamics 2018. Vol. 1. Springer. 2019. p. 303-313. (Conference Proceedings of the Society for Experimental Mechanics Series).