The effect of specimen thickness on the shock propagation along the in-fibre direction of an aerospace-grade CFRP laminate

Hazell, Paul J.; Stennett, C.; Cooper, G.

doi:10.1016/j.compositesa.2008.11.002

Cited by 42 publications

(31 citation statements)

References 36 publications

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“…The density of the CFRP material, measured using a Micrometrics AccuPyc 1330 gas pycnometer, was 1.512 g/cc ± 0.001 g/cc. The dynamic behaviour of this type of laminate subjected to flyer-plate testing has been reported both by Millett et al [12] and ourselves [13]. The mass fraction of the reinforcement was measured using the acid digestion method according to ASTM D 3171-6, Procedure B.…”

Section: Materials Usedmentioning

confidence: 99%

Penetration of a woven CFRP laminate by a high velocity steel sphere impacting at velocities of up to 1875m/s

Hazell

Cowie

Kister

et al. 2009

International Journal of Impact Engineering

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The impact of a woven 6 mm thick CFRP laminate has been subjected to impact by an annealed steel sphere up to velocities of 1875 m/s. It was observed that above a threshold impact energy, the percentage of kinetic energy dissipated by the laminate was constant.Further, the level of damage, as measured by C-Scan and through-thickness microscopy remained constant as the impact energy was increased. However, the size of the hole formed increased. This suggested that the energy transferred to the target in the velocity range of interest became independent of the delamination. Consequently, the main energy transfer mechanism at the high velocities of impact is thought to be due to the cavity expansion and more importantly, the kinetic energy of the particulates.

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Section: Materials Usedmentioning

confidence: 99%

Penetration of a woven CFRP laminate by a high velocity steel sphere impacting at velocities of up to 1875m/s

Hazell

Cowie

Kister

et al. 2009

International Journal of Impact Engineering

Self Cite

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“…Millett et al also found that both orientations converged at higher values of u p . Hazell et al [2] investigated the in fiber shock propagation (fibers perpendicular to the shock front) and also found at higher stresses similar spatial separation of the propagating shock was seen. TWCP sample, similar to the one investigated here except with the weave angled at 20 • to the impact surface, was investigated by Burrell et al [3].…”

Section: Introductionmentioning

confidence: 99%

The shock response of a tape wrapped carbon fiber composite

Wood¹,

Hazell²,

Appleby-Thomas³

et al. 2012

AIP Conference Proceedings

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Abstract. Carbon fiber composites are becoming ever more important in the design and construction of vehicles for the aerospace industry. Such vehicles will be subjected to transient loading during their inservice lives. Consequently, it is important to know how carbon fiber composites behave while under shock loading. This study investigates the shock response of a tape wrapped carbon fiber composite with a phenolic resin matrix and with the carbon fiber weave angled perpendicular to the direction of impact. The Hugoniot equation of state was found to be linear and of the form U S =3.69+0.59u p . Periodic oscillations were observed on many of the traces, attributed to interactions between the various layers of the composite. Further, a Hugoniot elastic limit of 1.39 ± 0.19 GPa was found. Finally, embedded lateral stress gauges indicated that at low pressures (< 5 GPa), lateral stresses in the composite were comparable to what would be expected in the matrix material alone, e.g. the lateral behaviour was highly dependent on the phenolic resin.

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“…The SATAC research program (Shock Adhesion Test for Adhesively Bonded Composites) aims to study the composites behaviour at very high strain rate in order to test their adhesion [15][16][17]. Other studies describe the behaviour of CFRP laminates under plate impact in the through-thickness direction [18], and along the fibre direction [19,20]. The response of glass fibers reinforced epoxy [21,22] Kevlar/epoxy and Spectra/epoxy composites [23] to a planar impact has also been investigated.…”

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confidence: 99%

Study of the response of CFRP composite laminates to a laser-induced shock

Gay

Berthe

Boustie

et al. 2014

Composites Part B: Engineering

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is an open access repository that collects the work of Arts et Métiers ParisTech researchers and makes it freely available over the web where possible. b s t r a c tLaser-induced shock yields to a local tensile stress within a sample. This high strain rate stress can be used to verify the bond strength between two layers. This method has been applied to Carbon Fibre Reinforced Polymer (CFRP) composite laminates, involved in aeronautic or defense industry. Experiments have been carried out on high power laser facility in the nanosecond regime. A velocimetry interferometer has been used to record the material velocity at the back surface of the samples. This study provides a comprehensive approach of the response of CFRP laminates of different thicknesses to a shock load normal to the fibres direction. The stress waves generation and propagation within the laminate and the induced delamination are key issues of this work. The main result is the ability of the technique to evaluate the out-of-plane strength of these laminates.

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The effect of specimen thickness on the shock propagation along the in-fibre direction of an aerospace-grade CFRP laminate

Cited by 42 publications

References 36 publications

Penetration of a woven CFRP laminate by a high velocity steel sphere impacting at velocities of up to 1875m/s

Penetration of a woven CFRP laminate by a high velocity steel sphere impacting at velocities of up to 1875m/s

The shock response of a tape wrapped carbon fiber composite

Study of the response of CFRP composite laminates to a laser-induced shock

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