Effect of repeated impacts on the response of plain-woven hybrid composites

Sevkat, Ercan; Liaw, Benjamin; Delale, F.; Raju, Basavaraju B.

doi:10.1016/j.compositesb.2010.01.001

Cited by 130 publications

(76 citation statements)

References 25 publications

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“…Damage evolution is assessed stepwise and failure mechanisms are highlighted. This practice is extensively used for composites [8,11,12]. Only Rajkumar [13][14][15] applied it to woven FMLs man-ufactured at low pressure.…”

Section: Introductionmentioning

confidence: 99%

“…Moriniere@tudelft.nl Several studies have evaluated the impact performance of FMLs upon minimum cracking energy and perforation energy at low-velocity impact [3][4][5]. However, damage size cannot be characterised only by the level of absorbed energy [6][7][8]. Caprino [9], Laliberté [10] and Liu [7] performed single impact tests at different energy levels until the penetration limit in order to reconstruct damage creation and damage growth stages in FMLs.…”

Section: Introductionmentioning

confidence: 99%

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Damage evolution in GLARE fibre-metal laminate under repeated low-velocity impact tests

et al. 2012

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An experimental study was performed on the repeated low-velocity impact behaviour of GLARE. Damage evolution in the material constituents was characterised with successive number of impacts. Records were correlated with visual inspection, ultrasound C-scan and chemical etching. The stiffness of the plate varied when cumulating the number of impacts. Damage accumulation was limited thanks to the synthesis of unidirectional composite and metal. The glass/epoxy plies with high elastic tensile strength could withstand several impacts before perforation despite delamination growth in the vicinity of the impacted area. The damage tolerant aluminium layers prevented the penetration of the projectile and avoided the expansion of delamination. This efficient mechanism preserved the structural integrity of GLARE until first aluminium cracking at the non-impacted side. Among the different failure modes, plate deformation absorbed most of the impact energy. The findings will support the development of a generic quasi-static analytical model and numerical methods.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Damage evolution in GLARE fibre-metal laminate under repeated low-velocity impact tests

et al. 2012

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“…Enfedaque et al (2010) and Sevkat et al (2009) concluded that the penetration impact resistance of such hybrid laminates can be improved when glass-fibre fabrics were the outermost layers. Under repeated impact test, Sevkat et al (2010) found that damage build-up and accumulation were reduced when glass-fibre layers were added and especially when glass-fibre layers were added as the outside layers. Researchers in this field widely agree that if fibres with the highest energy absorption are used as the outermost layers, the hybrid laminates are able to absorb more energy (Swolfs et al 2014).…”

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confidence: 99%

“…The ability of hybrid composites to exhibit damage contributes directly to the amount of energy they can absorb. Sevkat et al (2010) showed that the damaged area in GFRP/CFRP hybrids under low velocity impact was greater than the damaged areas in laminates made from either of the constituent composites. Pandya et al (2013) have investigated ballistic impact behaviour on hybrid GFRP/CFRP laminates.…”

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confidence: 99%

Blast resilience of composite sandwich panels with hybrid glass-fibre and carbon-fibre skins

Rolfe

Quinn

Sancho

et al. 2018

Multiscale and Multidiscip. Model. Exp. and Des.

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The development of composite materials through hybridisation is receiving a lot of interest; due to the multiple benefits, this may bring to many industries. These benefits include decreased brittle behaviour, which is an inherent weakness for composite materials, and the enhancement of mechanical properties due to the hybrid effect, such as tensile and flexural strength. The effect of implementing hybrid composites as skins on composite sandwich panels is not well understood under high strain rate loading, including blast loading. This paper investigates the blast resilience of two types of hybrid composite sandwich panel against a full-scale explosive charge. Two hybrid composite sandwich panels were mounted at a 15 m stand-off distance from a 100 kg nitromethane charge. The samples were designed to reveal whether the fabric layup order of the skins influences blast response. Deflection of the sandwich panels was recorded using high-speed 3D digital image correlation (DIC) during the blast. It was concluded that the combination of glass-fibre reinforced polymer (GFRP) and carbon-fibre reinforced polymer (CFRP) layers in hybrid laminate skins of sandwich panels decreases the normalised deflection compared to both GFRP and CFRP panels by up to 41 and 23%, respectively. The position of the glass-fibre and carbon-fibre layers does not appear to affect the sandwich panel deflection and strain. A finite element model has successfully been developed to predict the elastic response of a hybrid panel under air blast loading. The difference between the maximum central displacement of the experimental data and numerical simulation was ca. 5% for the hybrid panel evaluated.

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“…Several studies have focused on the impact fatigue property of the viscoelastic material. In order to apply different types of impacts, researchers have proposed several testing machines, such as weight dropping machines [20][21][22], swinging pendulum machines [23], and rotary machines [24]. Influencing parameters, such as testing temperature [25], the number of impacts [23] and contact time [22], were studied.…”

Section: Introductionmentioning

confidence: 99%

Impact Fatigue of Viscoelastic Materials Subjected to Pounding

2018

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Abstract:The pounding tuned mass damper (PTMD) is a novel vibration control device that can be used for many different structures. The PTMD utilizes a viscoelastic delimiter to enhance its vibration control effectiveness and robustness though pounding between the tuned mass and the viscoelastic material. However, the viscoelastic material is subjected to repeated poundings during its service life, which influences the property of the material and degrades its energy dissipation ability. Therefore, this study investigates the fatigue behavior of the viscoelastic material under impact loading. An experimental apparatus, which can generate and sense the lateral impacts, is designed and fabricated to facilitate the fatigue study of the viscoelastic material subject to impact loading. Based on experimental data, the pounding stiffness and the hysteresis loops are employed to characterize the behavior of the material. It is revealed that the impact fatigue process can be divided into two phases: the cyclic-hardening phases and the cyclic-softening phase. The energy dissipation is firstly reduced, and then increased, by the repeated impacts. In summary, with a total of 360,000 impacts, the viscous elastic material is still effective in dissipating impact energy.

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Effect of repeated impacts on the response of plain-woven hybrid composites

Cited by 130 publications

References 25 publications

Damage evolution in GLARE fibre-metal laminate under repeated low-velocity impact tests

Damage evolution in GLARE fibre-metal laminate under repeated low-velocity impact tests

Blast resilience of composite sandwich panels with hybrid glass-fibre and carbon-fibre skins

Impact Fatigue of Viscoelastic Materials Subjected to Pounding

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