Parametric Study of Experimental and Numerical Simulation of Sandwich Composite Structures Flexural Behaviour

Beznea, Elena Felicia; Chirica, Ionel; Baroiu, Nicușor; Teodor, Virgil

doi:10.37358/mp.17.4.4925

Cited by 7 publications

(6 citation statements)

References 4 publications

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“…The faces and the core are glued with an adhesive aimed to facilitate mechanical and thermal load transfer between components. This increases the bending stiffness of the structure without adding substantial weight, despite the heterogeneity of the component materials and the totally different properties of the core and skins [8]. The behavior to bending loading of sandwich (composite-polystyrene-composite) specimens, by 3 point bending method is analysed.…”

Section: Introductionmentioning

confidence: 99%

Static and thermal behaviour of ship structure sandwich panels

et al. 2021

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The mechanical properties of certain flexible core materials of ship structure sandwich panels, having skins made of metallic or composite laminates may be significantly influenced by the temperature variations that may occur during the operational loading. At the same time, the improving knowledge of the behaviour of these panels in terms of bending strength and other stress / strain related aspects in various harsh conditions increases their superiority in terms of weight-to-strength ratio, high stiffness, easy to manufacture, acoustic and thermal insulation. In the paper, the behaviour of the ship structural rectangular sandwich panels to the mechanical and thermal loading are presented. The sandwiches have a special core of 20 mm and skins made out of different materials (glass fiber reinforced polyester, steel and aluminium) with a thickness of 3 mm. Analysis consists of the behaviour of the composite sandwich panels in the bending test at constant speed by the three-point method, for three distances between different supports, by measuring the maximum displacement and force applied to the specimens under various thermal fields. The sandwich structures are also thermally analysed, determining their thermal conductivity by the heat flow measurement method. The experimental results are compared with the results obtained by finite element analysis in numerical simulation of all modelling cases.

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Section: Introductionmentioning

confidence: 99%

Static and thermal behaviour of ship structure sandwich panels

et al. 2021

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“…The loss in stiffness of this types of core changes the overall mechanical response of the panel sandwich structure [10][11]. This change in panel behaviour has to be considered in the design procedures, because it may lead to a significant change in the failure mode of the structure [12][13].…”

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Influence of the Thermal Field on Static Behaviour of Sandwich Structures

Beznea¹,

Coman²,

Baroiu³

et al. 2019

Mat.Plast.

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In this paper, numerical and experimental studies on the influence of the thermal field on behavior of the structure of sandwich plates in three points bending is analysed. Various materials are used so for skins. For the core only extruded polystyrene, with various thicknesses is used. The thermal conductivity n was determined by using the Hilton B480 unit, based on the heat flowmeter method described in ISO 8301:1991. We have been analyzed 12 cases of composite sandwich structures. The results obtained by experimental determination and numerical simulation of all cases of modeling are compared and certain differences occurred on the analyzing of influence of the thermal field on the bending characteristics of sandwich structures.

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“…Polymer composites materials constitute a very active area for research in material science and nondestructive evaluation. The composites hold improved properties based on the advanced features of each individual component, sustaining new industrial applications which cannot be obtained based on individual components performances [1][2][3]. It is well known that the thermal and mechanical behavior of polymers is strongly influenced by factors such type, size, content and shape of the fillers [1][2][3].…”

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confidence: 99%

“…The composites hold improved properties based on the advanced features of each individual component, sustaining new industrial applications which cannot be obtained based on individual components performances [1][2][3]. It is well known that the thermal and mechanical behavior of polymers is strongly influenced by factors such type, size, content and shape of the fillers [1][2][3]. Furthermore, these properties have a very complex dependence on the chemical structure and the crosslink density when thermoset resins and metallic fillers are combined [4,5].…”

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confidence: 99%

Nondestructive Evaluation of Metallic Fillers Embedded in Polyester Matrix

Steigmann¹,

Savin²,

Badea³

2018

Mat.Plast.

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Composites made from metallic fillers embedded in polymer matrix have good shielding properties as electrical point of view and tribology properties from mechanical point of view. These properties depend on amounts, shapes, sizes, and combinations of fillers and matrix. This paper proposes an electromagnetic method for determination of metallic fillers concentration in composite materials from metallic fillers embedded in polyester matrix. The bulk resistivity and dielectric permittivity were measured but these measurements are less influenced by the fillers concentration. The amplitude measurement of e.m.f induced in the reception coil of the focalized electromagnetic transducer and their averaging for the scanning of a relative large zone of the composite has proven to be an efficient method. The average amplitude linearly decreases with the increasing of fillers concentration, and has different values for Cu and AISI 316 fillers.

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Parametric Study of Experimental and Numerical Simulation of Sandwich Composite Structures Flexural Behaviour

Cited by 7 publications

References 4 publications

Static and thermal behaviour of ship structure sandwich panels

Static and thermal behaviour of ship structure sandwich panels

Influence of the Thermal Field on Static Behaviour of Sandwich Structures

Nondestructive Evaluation of Metallic Fillers Embedded in Polyester Matrix

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