Experimental and modelling study of low velocity impacts on composite sandwich structures for railway applications

Sakly, Adnene; Laksimi, A.; Kébir, Hocine; Benmedakhen, Salim

doi:10.1016/j.engfailanal.2016.03.001

Cited by 37 publications

(9 citation statements)

References 21 publications

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“…Composite foam sandwich panels were investigated for railway applications, for rail vehicle car bodies [11] and protective devices subjected to low-velocity impact of ballast projectiles [12], showing that such materials have the potential to enhance the impact strength of components in this field. Epasto et al [13] proposed an innovative Metallic Foam Shell (MFS) protective device against flying ballast impact damage in railway axles.…”

Section: Introductionmentioning

confidence: 99%

Nondestructive Evaluation of Aluminium Foam Panels Subjected to Impact Loading

et al. 2021

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Aluminium foam sandwich structures have excellent energy absorption capacity, combined with good mechanical properties and low density. Some of the authors of this paper proposed an innovative Metallic Foam Shell protective device against flying ballast impact damage in railway axles. A closed-cell aluminium foam was chosen for the Metallic Foam Shell device. The main goal of this study was the experimental investigation of the impact responses of aluminium foam panels. Low velocity impact tests were carried out at different energies on different types of aluminium foam panels in order to investigate the effects of some parameters, such as core thickness, skin material and layer. Tests were conducted at repeated impacts on aluminium foam panels without and with skins made of aluminium and glass fibre-reinforced polymer. The experimental results were compared and the impacted panels were investigated by means of the nondestructive techniques ultrasonic phased array and digital radiography.

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Section: Introductionmentioning

confidence: 99%

Nondestructive Evaluation of Aluminium Foam Panels Subjected to Impact Loading

et al. 2021

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“…The effect of temperature on the impact behavior of sandwich structures has received limited attention [44][45][46][47][48] compared to composite laminates. Salehi-Khojin et al [46] studied the behavior of carbon/Kevlar sandwich panels with Kraft paper honeycomb core filled with polyurethane foam subjected to impact loadings from À50 C to 120 C. They observed more damage and fiber breakage at À50 C. Opposite results were obtained by Yang et al [45] for carbon/epoxy sandwich panels with foam core impacted at temperature ranging from À45.6 C to 82.2 C. They observed larger damaged areas for specimens impacted at 82.2 C. However, they explained their results by the reduction of the foam core modulus at high temperature.…”

Section: Introductionmentioning

confidence: 99%

“…The effect of temperature on the impact behavior of sandwich structures has received limited attention [44–48] compared to composite laminates. Salehi-Khojin et al.…”

Section: Introductionmentioning

confidence: 99%

Effect of extreme cold temperatures on quasi-static indentation and impact behavior of woven carbon fiber epoxy composite sandwich panels with nomex honeycomb core

Jean-St-Laurent

Dano

Potvin

2021

Jnl of Sandwich Structures & Materials

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The effect of extreme cold temperatures on the quasi-static indentation and the low velocity impact behavior of woven carbon/epoxy composite sandwich panels with Nomex honeycomb core was investigated. Impact tests were performed at room temperature, –70°C, and –150°C. Two sizes of hemispherical impactor were used combined to three different impactor masses. All the impact tests were performed at the same initial impact velocity. The effect of temperature on the impact behavior is investigated by studying the load history, load-displacement curves and transmitted energy as a function of time curves. Impact damage induced at various temperatures was studied using different non-destructive and destructive techniques. Globally, more damages are induced with impact temperature decreasing. The results also show that the effect of temperature on the impact behavior is function of the impactor size.

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“…17 Sandwich structures are used in numerous applications due to their intrinsic low specific weight. [18][19][20][21] Sandwich structures are comprised of two thin skins and a moderately thick core. Diverse types of sandwich structures in terms of core material and architecture, and skin material are available.…”

Section: Introductionmentioning

confidence: 99%

The crashworthiness performance of integrally woven sandwich composite panels made using natural and glass fibers

Dastan

Safian

Sheikhzadeh

2020

Journal of Composite Materials

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As a way to save petroleum resources, considerable efforts were made in the last three decades to develop green composites. Green composites are a category of composite materials in which at least one phase (reinforcement or matrix) is made from renewable resources. An attempt was made to present a simple fabrication process to produce hollow integrally woven sandwich composites. In addition, the potential of jute fibers to be utilized as piles in the core of an integrally woven sandwich composite was assessed and compared to the counterparts made using glass fibers. The crashworthiness performances of integrally woven sandwich composite samples considering the effect of relative density, pile material and the presence of polyurethane foam were investigated through performing quasi-static flat-wise compression tests. Based on the findings, the foam-filled integrally woven sandwich composites exhibited stable compression load-displacement response and better energy absorption properties over pure foam, which make them appropriate for automobile interior components. Moreover, a computational cost-efficient finite element modeling was presented and subsequently validated with experimental results.

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Experimental and modelling study of low velocity impacts on composite sandwich structures for railway applications

Cited by 37 publications

References 21 publications

Nondestructive Evaluation of Aluminium Foam Panels Subjected to Impact Loading

Nondestructive Evaluation of Aluminium Foam Panels Subjected to Impact Loading

Effect of extreme cold temperatures on quasi-static indentation and impact behavior of woven carbon fiber epoxy composite sandwich panels with nomex honeycomb core

The crashworthiness performance of integrally woven sandwich composite panels made using natural and glass fibers

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