Dissipation analysis in SFRP structural samples: Thermomechanical analysis and comparison to numerical simulations

Marco, Yann; Saux, V. Le; Jegou, Loïc; Launay, A.; Serrano, Leonell; Raoult, Ida; Calloch, Sylvain

doi:10.1016/j.ijfatigue.2014.02.004

Cited by 24 publications

(18 citation statements)

References 29 publications

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“…using thermographic techniques [21]. Therefore, it was not possible to quantify the effect of notch severity on self heating, as in [22]. Nevertheless, preliminary analyses [14] showed that by taking into account only the fibre orientation distribution and the corresponding local mechanical properties in finite element models, the observed differences in the fatigue behavior with different injection gates were explained for notch radiuses of 2 mm.…”

Section: Role Of Temperaturementioning

confidence: 99%

An experimental investigation of the combined influence of notch size and fibre orientation on the fatigue strength of a short glass fibre reinforced polyamide 6

2015

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Section: Role Of Temperaturementioning

confidence: 99%

An experimental investigation of the combined influence of notch size and fibre orientation on the fatigue strength of a short glass fibre reinforced polyamide 6

2015

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“…This hypothesis is highly disputable as these materials do not show any clear fatigue limit. This point, initiated in other references [5,44], deserves further discussion. In particular, the physical nature of the regimes identified is to be clarified as a clear split between the nonlinear effects of viscoelasticity, visco-plasticity and damage remains difficult for these materials [9,38,42].…”

Section: Identification Of the Dissipated Energy Criterion Parametersmentioning

confidence: 61%

Fast screening of the fatigue properties of thermoplastics reinforced with short carbon fibers based on thermal measurements

et al. 2018

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The goal of this paper is to investigate the ability of the heat build-up technique to predict the fatigue lifetime of injected thermoplastic reinforced with short carbon fibers. Several commercial grades and filler ratios are considered here in order to challenge the ability of the technique to capture the influence of these variations. First, the materials are investigated and the mechanical and thermal protocols are described. The way to build the heat-build-up curves is outlined. Then the results obtained from the heat build-up and fatigue experiments are presented. The heat build-up curves are obtained both from measurements performed on the front surface of the sample and from the side surface. Finally, these results are used to discuss two main points. The first is the validity of the hypotheses needed to apply the approach, ranging from the evaluation of the dissipation to the fatigue response. The second is the capability to predict the fatigue curves accurately throughout an energetic criterion, and to identify the influence of the variations of matrix grade and fiber content on the fatigue properties. It appears that the predictions obtained match the results obtained from classic fatigue tests and validates the use of the technique for fast material screening.

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“…Here, the hypothesis is that the energy evaluated for this transition leads to a lifetime of 10 6 cycles.This hypothesis is highly disputable as these materials do not show any clear fatigue limit. This point, initiated in other references [5,44], deserves further discussion. In particular, the physical nature of the regimes identified is to be clarified as a clear split between the nonlinear effects of viscoelasticity, viscoplasticity and damage remains difficult for these materials [9, 38, and 42].…”

Section: Identification Of the Dissipated Energy Criterion Parametersmentioning

confidence: 61%

“…The experimental determination of the dissipated energy fields relies on the solving of the heat equation [21,44]. Under some classic assumptions (including adiabaticity) detailed in former publications [11,25,43,44], the heat equation can be written as…”

Section: Thermal Measurements and Determination Of The Cyclic Dissipamentioning

confidence: 99%

Fast screening of the fatigue properties of thermoplastics reinforced with short carbon fibers based on a heat build-up protocol

et al. 2018

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This study deals with the characterization of the fatigue lifetime of a short carbon fiber reinforced PEEK matrix thermoplastic composite using a heat build-up protocol. Several commercial grades and fillers ratios are considered in order to challenge the ability of the technique to capture the influence of these variations. First, the materials investigated and the experimental protocols are described. The way to build the heat build-up curves is outlined. Then the results obtained from the heat build-up and the fatigue experiments are presented. Finally these results are used to discuss two main points. The first one is the validity of the hypotheses needed to apply the approach, ranging from the evaluation of the dissipation to the response during the fatigue tests. The second one is the capability to predict the fatigue curves accurately throughout an energetic criterion and to catch the influence of the variation of material on the fatigue properties. The results presented here are published with more details in [47].

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Dissipation analysis in SFRP structural samples: Thermomechanical analysis and comparison to numerical simulations

Cited by 24 publications

References 29 publications

An experimental investigation of the combined influence of notch size and fibre orientation on the fatigue strength of a short glass fibre reinforced polyamide 6

An experimental investigation of the combined influence of notch size and fibre orientation on the fatigue strength of a short glass fibre reinforced polyamide 6

Fast screening of the fatigue properties of thermoplastics reinforced with short carbon fibers based on thermal measurements

Fast screening of the fatigue properties of thermoplastics reinforced with short carbon fibers based on a heat build-up protocol

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