Experimental and numerical study of the impact behavior of SMC plates

In this paper, an experimental and numerical study on the energy absorption characteristics due to the low-velocity impact of the composites reinforced by the multiaxial warp knitted (MWK) structures with double loop pillar stitch and common tricot stitch are presented. The influences of the MWK structural parameters on the impact behavior and energy absorption properties are discussed. A good agreement between the experimental results and simulation is obtained.

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“…From this, the volume fraction of each yarn section can be calculated. Details of the model were already presented in [6].…”

Section: Geometric Modelingmentioning

confidence: 99%

An Experimental and Numerical Study on the Impact Energy Absorption Characteristics of the Multiaxial Warp Knitted (MWK) Reinforced Composites

Rong-xing

Chen

et al. 2005

Journal of Composite Materials

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“…The fl at and semi-spherical types displayed similar energy dissipation levels and failure mechanisms. Compared with the semi-cylindrical type in which only a vertically propagating crack was observed, in the case of the fl at and hemispherical types local indentation occurred and this extra failure mechanism acted in such a way as to increase the energy dissipation capability of the specimen [8] .…”

Section: Introductionmentioning

confidence: 96%

Experimental study of the impact behavior of laminated composites stricken by sharp impactors

Uyaner

Kara

2012

Science and Engineering of Composite Materials

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In this study, the infl uence of the impactor shape on the dynamic response of E-glass/epoxy laminates was investigated. Composite samples were impacted using steel 90 ° and 120 ° conical, 24 mm and 12 mm in diameter hemispherical, pyramidal impactors via a specially developed drop weight test machine. The impact tests were performed at impactor mass (20 kg) for impact velocity (2.5 m/s). Plate specimens consisting of 18 plies for tests (180×50 mm) with a nominal thickness (7 mm) were used. Contact forcetime and contact force-defl ection data obtained from the experiments were interpreted. It was found that the contact force was smaller in the 90 ° conical impactor while it was bigger in the 24 mm hemispherical one. Absorbed energies were also investigated. The absorbed energy obtained for pyramidal impactor was greater than that of the others. Furthermore, overall damage areas caused by the impactor were evaluated.

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“…Sun and Dicken [11] also reported that the extent of internal damage could be predicted by the depth of the surface indentation in laminates. Lee et al [12] found that at and hemispherical impactors produced similar failure mechanisms and energy dissipation levels. Kim and Goo [13] modelled the e ect of altering the ratio between impactor nose lengths to impactor radius and found that as the ratio decreased (became more blunt), the peak load increased and the impact duration decreased.…”

Section: Introductionmentioning

confidence: 99%

Flat nose low velocity drop-weight impact response of carbon fibre composites using non-destructive damage detection techniques

Farooq

Myler

2015

Open Engineering

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This work is mainly concerned with the nondestructive post-impact damage evaluation of carbonbre reinforced laminated composite panels subject to low velocity drop-weight impact by at and round nose impactors. Quasi-isotropic laminates consisting of eight-, sixteen-, and twenty-four plies were impacted by at and round nose impactors at di erent velocity levels. Load-time history data were recorded and plotted to correlate loaddrop as damage level to the impactor nose pro les. Test produced data, non-destructive damage detection techniques: visual, ultrasonic, and eddy-current, and computer simulations were utilised to identify and quantify status of the impact induced damage. To evaluate damage in relatively thick laminates (consisting of 24-Ply), the damage ratios and de ection quantities were correlated to the corresponding impactor nose pro les. Damage induced by the at nose impactor to thick laminates was compared against the data produced by the round nose impactor. Results show that relatively thin laminates were largely a ected by the impactor nose. Reasonable di erence was observed in damage caused by at and round impactor nose pro les to thick laminates impacted at relatively higher velocity impacts. Results were compared and validated against simulation produced data.

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Experimental and numerical study of the impact behavior of SMC plates

Cited by 37 publications

References 13 publications

An Experimental and Numerical Study on the Impact Energy Absorption Characteristics of the Multiaxial Warp Knitted (MWK) Reinforced Composites

An Experimental and Numerical Study on the Impact Energy Absorption Characteristics of the Multiaxial Warp Knitted (MWK) Reinforced Composites

Experimental study of the impact behavior of laminated composites stricken by sharp impactors

Flat nose low velocity drop-weight impact response of carbon fibre composites using non-destructive damage detection techniques

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