High strain rate behaviour of 5-harness-satin weave fabric carbon–epoxy composite under compression and combined compression–shear loading

Koêrber, H.; Xavier, José; Camanho, P.P.; Essa, Yasser; Escalera, Federico Martín de la

doi:10.1016/j.ijsolstr.2014.10.018

Cited by 40 publications

(17 citation statements)

References 32 publications

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“…A s was determined from the initial cross-section A s0 , the initial specimen length l s0 and the true specimen length l s by applying the volume consistency condition as described in [7]. Similarly, true axial stress σ xx was determined for the dynamic tests, following classic split-Hopkinson pressure bar analysis (SHPBA) [8] as…”

Section: Data Reductionmentioning

confidence: 99%

Experimental characterization and constitutive modeling of the non-linear stress–strain behavior of unidirectional carbon–epoxy under high strain rate loading

Koêrber

Kühn

Ploeckl

et al. 2018

Adv. Model. and Simul. in Eng. Sci.

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The mechanical response of IM7-8552 carbon epoxy was investigated for transverse tension and transverse tension/in-plane shear loadings at static and dynamic strain rates using transverse tension and off-axis tension specimens. The dynamic tests were carried out on a split-Hopkinson tension bar at axial strain rates from 113 to 300 s −1 . With the already available off-axis and transverse compression test data for IM7-8552, a comprehensive data set is available now, which can be used for validation and calibration of numerical models. The measured axial stress-strain response was simulated using a fully 3D transversely isotropic elastic-viscoplastic constitutive model. The constitutive model represents a viscoplastic extension of the transversely-isotropic plasticity model developed by the authors (Vogler et al. in Mech Mater 59:50-64, 2013). An invariant based failure criterion is added to the model to be able to predict the strength for a given orientation and strain rate accurately. The strain rate dependency of the elastic and ultimate strength properties is introduced in the model through scaling functions. A good correlation between the measured and numerically predicted stress-strain response and failure of the specimens was achieved for all specimen types and both strain rate regimes.

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Section: Data Reductionmentioning

confidence: 99%

Experimental characterization and constitutive modeling of the non-linear stress–strain behavior of unidirectional carbon–epoxy under high strain rate loading

Koêrber

Kühn

Ploeckl

et al. 2018

Adv. Model. and Simul. in Eng. Sci.

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show abstract

“…Expecting a linear stress-strain behaviour of the specimens up to failure, a triangular shaped incident-wave is best suited 180 to obtain nearly constant strain rates [34,35]. The accuracy of the used SHPB system was ascertained by bars-together tests, documented in [36].…”

Section: Dynamic Experimental Setupmentioning

confidence: 99%

Fracture toughness and crack resistance curves for fiber compressive failure mode in polymer composites under high rate loading

Kühn

Catalanotti

Xavier

et al. 2017

Composite Structures

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Koerber, H. (2017). Fracture toughness and crack resistance curves for fiber compressive failure mode in polymer composites under high rate loading. Composite Structures, 182,[164][165][166][167][168][169][170][171][172][173][174][175] This is a PDF file of an unedited manuscript that has been accepted for publication. As a service to our customers we are providing this early version of the manuscript. The manuscript will undergo copyediting, typesetting, and review of the resulting proof before it is published in its final form. Please note that during the production process errors may be discovered which could affect the content, and all legal disclaimers that apply to the journal pertain. The results show that the steady state fracture toughness of the fiber compressive failure mode of the unidirectional carbon-epoxy composite material IM7-8552 is 165.6 kJ/m 2 and 101.6 kJ/m 2 under dynamic and quasi-static loading, respectively. Therefore the intralaminar fracture toughness in compression is found to increase with increasing strain rate.

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“…For a good representation of the woven composite material, the width was chosen to ensure at least two rows of undamaged weaves within the gauge section. For compression tests, even though standard specimen was recommended in ASTM D3410 for quasi-static test, cuboid specimen was most frequently applied for both quasistatic and dynamic tests for easy manufacturing and loading requirement of SHPB apparatus [3,8,10,26]. Specimens for static and dynamic compression tests were designed with the same size as 10 £ 10 £ 5 mm 3 .…”

Section: Materials Preparationmentioning

confidence: 99%

Experimental study of in-plane mechanical performance of carbon/glass hybrid woven composite at different strain rates

Zhu

et al. 2016

International Journal of Crashworthiness

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Woven composite has been increasingly employed in engineering applications undergoing complex loading conditions. For effective use of composite materials, it is essential to fully understand the mechanical behaviour of composite at different strain rates. In the present study, both in-plane tensile and compressive mechanical properties of a carbon/glass hybrid plain weave composite were experimentally investigated over the strain rate range from 0.001 to 1000 s ¡1 . High strain rate tests were carried out using Split Hopkinson Pressure and Split Tensile Bar apparatuses, respectively. Experiments were performed at the axial direction of 0 and 90 , and the off-axial direction of 45 considering the tension/compression asymmetry and anisotropy characteristic. The results indicated that the in-plane mechanical performance was strain rate sensitive under both tensile and compressive loadings. Highly direction-dependent and tension/compression asymmetric characteristic was observed under quasi-static and high strain rate loadings. The elastic modulus showed no strain rate sensitivity for the 0 axial tension. However, for other loading conditions, the elastic modulus was enhanced by 1.7À7.2 times under high strain rate loading. The strength was increased by 1.2À2.5 times at 1000 s ¡1 compared with that under quasi-static loading for different loading directions. For higher strain rate sensitivity under compression than tension, the asymmetry was less obvious with the increase of strain rate. Two phenomenological models were proposed to quantitatively fit the relationship between the strength property and strain rate, which showed great consistency between the experimental and fitted results.

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High strain rate behaviour of 5-harness-satin weave fabric carbon–epoxy composite under compression and combined compression–shear loading

Cited by 40 publications

References 32 publications

Experimental characterization and constitutive modeling of the non-linear stress–strain behavior of unidirectional carbon–epoxy under high strain rate loading

Experimental characterization and constitutive modeling of the non-linear stress–strain behavior of unidirectional carbon–epoxy under high strain rate loading

Fracture toughness and crack resistance curves for fiber compressive failure mode in polymer composites under high rate loading

Experimental study of in-plane mechanical performance of carbon/glass hybrid woven composite at different strain rates

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