The fracture behavior of sandwich composites with different core densities and thickness subjected to mode I loading at different temperatures

Malekı, Farshıd Khosravı; Toygar, M. Evren

doi:10.1088/2053-1591/aafc02

Cited by 9 publications

(7 citation statements)

References 16 publications

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“…Shah and Tarfaoui [12] measured the strain energy release rate (SERR) of Mode I and II for the face-plate foam-core interface using the double cantilever beam method, and the results displayed that the SERR values changed with the thickness of the core. Maleki and Toygar [13] had carried out analytical and experimental methods to examine the influences of core thickness and core density on fracture behavior of the glass-epoxy woven sandwich composites at different temperatures using Single Cantilever Beam (SCB) approach detecting the increase in SERR with temperature in all samples. It was noticed that a significant increase was for those with high core density at any temperature, while the outcome was independent of core thickness.…”

Section: Introductionmentioning

confidence: 99%

Failure behavior of sandwich honeycomb composite beam containing crack at the skin

Al-Fasih¹,

Kueh²,

Ibrahim³

2020

PLoS ONE

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Skin crack defects can develop in sandwich honeycomb composite structures during service life due to static and impact loads. In this study, the fracture behavior of sandwich honeycomb composite (SHC) beams containing crack at the skin was investigated experimentally and numerically under four-point loading. Three different arrangements of unidirectional (UD) carbon fiber composite and the triaxially woven (TW) fabric were considered for the skins. The presence of a 10 mm crack at mid-span of the top skin, mid-span of the bottom skin, and midway between load and support of the top skin, respectively, were considered. Failure load equations of the load initiating the skin crack extension were analytically derived and then numerically developed using the J-integral approach. The crack extension failure mode dominated all cracked specimens except those with low-stiffness skin which were controlled by the compressive skin debonding and core shear failures.

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Section: Introductionmentioning

confidence: 99%

Failure behavior of sandwich honeycomb composite beam containing crack at the skin

Al-Fasih¹,

Kueh²,

Ibrahim³

2020

PLoS ONE

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“…This finding is supporting previous publications, in which crack kinking at DCB specimens was observed, which was attributed to a positive shear stress at the crack tip. 60,74,78 He and Hutchinson 79 described the conditions leading to the kinking of a crack between two brittle materials out of their interface. According to their work, the tendency of a crack kinking into the core is a result of positive shear stresses at the crack tip and the satisfaction of a balance of involved SERR.…”

Section: Introductionmentioning

confidence: 99%

A review of mode I dominant interfacial fracture toughness test methods of skin-core bonding for thermoplastic composite sandwich structures

Weidmann

Ziegmann

Wieser³

2022

Journal of Thermoplastic Composite Materials

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Increased lightweight design via composite sandwich structures is a promising approach due to their exceptionally high weight-specific mechanical properties. The involved high cost when using sandwich composite structures has hindered applications in cost-sensitive markets up to now. However, full thermoplastic composite sandwich structures enable a cost reduction using novel processing routes based on fusion bonding of core and facesheet. In order to optimize such full thermoplastic composite sandwich structures and to ensure proper bonding of facesheet and core after manufacture, valid test methods for the quantification of skin-core interfacial bonding are required. This paper reviews existing test methods for the determination of Mode I dominant interfacial fracture toughness of sandwich structures. The main focus is set on cantilever beam tests as well as on peel tests. Based on a definition of requirements for suitable test methods, their applicability for full thermoplastic composite sandwich structures is evaluated. The Mandrel Peel Test results as most promising test method for thermoplastic sandwich structures, especially with thin facesheets.

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“…The process consists of building up or placing layers of composite fiber in a sequenced lay-up using a matrix of resin and hardener. [19][20][21][22] Flexural properties of Al/Floral foam sandwich composite prepared by hand lay-up process were investigated by Firuz et al 23 Sözen and Gündüz 24 studied the ballistic properties of oriented strand board panels supported by different proportions of woven glass fiber and waste polypropylene. The materials forming the ballistic panel were organized by means of the hand lay-up method.…”

Section: Introductionmentioning

confidence: 99%

Experimental investigation on mechanical behavior of fiber–metal laminates reinforced by hybrid carbon nanotubes and nanosilica under quasi-static pressure load

Saleh

Tooski

Khorshidvand

et al. 2022

Proceedings of the Institution of Mechanical Engineers, Part C:

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In this study, the effect of carbon nanotubes (CNT) and silica nanoparticles on quasi-static behavior of fiber–metal laminates (FML) has been experimentally scrutinized. FML consists of two layers of aluminum alloy plates and four composite layers including CNT/nanosilica-reinforced epoxy resin and glass fibers. The effect of weight percentage of carbon nanotube and nanosilica incorporated and their weight ratio in resin epoxy on the performance of FMLs against quasi-static compressive load has been considered. Furthermore, the design of experiments method and response surface methodology have been put into practice to develop an accurate mathematical relationship between the input parameters and the response variable. After designing and performing the experiments based on analysis of variance, a mathematical model corresponding to the real process is obtained. Moreover, the presented model has been validated by statistical methods. The results of this study indicate that the energy absorption capacity of these materials significantly increase through adding CNT to the FML, the highest failure force of 11.64 kN was obtained for FLMs comprising 0.6 wt.% of CNT and 3 wt.% of SiO2. An improvement of 27.88% and 45.86% in the absorbed energy and failure force was achieved, respectively, by adding 3 wt.% of SiO2 and 0.6 wt.% of CNT to FLM compared to pristine FLM.

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The fracture behavior of sandwich composites with different core densities and thickness subjected to mode I loading at different temperatures

Cited by 9 publications

References 16 publications

Failure behavior of sandwich honeycomb composite beam containing crack at the skin

Failure behavior of sandwich honeycomb composite beam containing crack at the skin

A review of mode I dominant interfacial fracture toughness test methods of skin-core bonding for thermoplastic composite sandwich structures

Experimental investigation on mechanical behavior of fiber–metal laminates reinforced by hybrid carbon nanotubes and nanosilica under quasi-static pressure load

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