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Modeling the flexural fatigue behavior of glass-fiber-reinforced thermoplastic matrices

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Abstract

A two-parameter model explicitly accounting for the cyclic as well as the mean stress was proposed and tested on the basis of static and fatigue data obtained in four-point bending on a random continuous glass-fiber-reinforced polypropylene. The model is based on residual strength degradation and captures the effect of stress ratio (i.e. the ratio between the minimal and the maximal stress). The experimental data were in excellent agreement with the theoretical predictions, indicating that a fatigue characterization can be achieved with a minimum of experimental tests. Further, the reasonable agreement between the static strength data and the theoretical predictions highlighted the potential and reliability of the model in view of its statistical implementation

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Authors and Affiliations

  1. Department of Aerospace and Mechanical Engineering, The Second University of Naples—SUN, Via Roma 19, Aversa, (CE), 81031, Italy

    Alberto D’Amore, Luigi Grassia & Pasquale Verde

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  1. Alberto D’Amore
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  2. Luigi Grassia
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  3. Pasquale Verde
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Correspondence to Alberto D’Amore.

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D’Amore, A., Grassia, L. & Verde, P. Modeling the flexural fatigue behavior of glass-fiber-reinforced thermoplastic matrices. Mech Time-Depend Mater 17, 15–23 (2013). https://doi.org/10.1007/s11043-012-9192-y

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  • DOI: https://doi.org/10.1007/s11043-012-9192-y

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