Compression after low velocity impact tests of marine sandwich composites: Effect of intermediate wooden layers

Balıkoğlu, Fatih; Demircioğlu, Tayfur Kerem; İnal, Oğuzcan; Arslan, Nurettin; Ataş, Akın

doi:10.1016/j.compstruct.2017.08.003

Cited by 30 publications

(12 citation statements)

References 19 publications

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“…So, a combination of plywood and other materials seems to be relevant and was first investigated statically by the authors [3,4]. Wood based sandwich structures with high specific properties, low costs and good energy dissipation capability are promising candidates for impact and crash applications in the transportation sector [4][5][6][7]. The buckling of tracheid cells in wood at micro scale is similar to the structural buckling of honeycomb cell walls at macro scale and enables maximum energy dissipation [8,9].…”

Section: Introductionmentioning

confidence: 99%

“…In particular, sandwich structures are vulnerable to various impact loads and may be exposed to different impacts during their service life [4]. These impacts may result in significant damage, such as local cell wall buckling or core crushing, and debonding between skin and core, so damage in the skin can intensively compromise the integrity of the structure [5][6][7][8][9][10] and especially the compression after impact strength [6,11]. So the analysis of plywood based sandwich structures under impact is a priority.…”

Section: Introductionmentioning

confidence: 99%

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Experimental investigation of impact behavior of wood-based sandwich structures

Susainathan

Eyma

Luycker

et al. 2018

Composites Part A: Applied Science and Manufacturing

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Low carbon emission and sustainable development are shared goals throughout the transportation industry. One way to meet such expectations is to introduce lightweight materials based on renewable sources. Sandwich panels with plywood core and fiber reinforced composite skins appear to be good candidates. Additional properties of wood such as fire resistance or thermal and acoustic insulation are also essential for many applications and could lead to a new interest for this old material. In this paper, Sandwich panels with two different types of plywood and four different skins (aluminum and glass, CFRP, or flax reinforced polymer) are tested under low-velocity/low energy impacts and their behavior is discussed.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Experimental investigation of impact behavior of wood-based sandwich structures

Susainathan

Eyma

Luycker

et al. 2018

Composites Part A: Applied Science and Manufacturing

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“…It was stated that the recyclability of these new designs is questionable. In our earlier work [31], ashwood was found to be stronger against…”

Section: Introductionmentioning

confidence: 79%

“…With regard to plywood structures, at high impact energy levels, they are perforated with heavy loss of structural integrity, which can be undesirable in most applications [29]. Previous studies also revealed that the impact damage tolerance of such wood-based materials can be increased by using them in conjunction with composite skins in sandwich designs [29][30][31]. Shin et al [30] showed that the energy absorption of wood-based sandwich structures was comparable with the aluminium honeycomb sandwich structures.…”

Section: Introductionmentioning

confidence: 99%

Experimental investigation on low-velocity impact response of wood skinned sandwich composites with different core configurations

Demircioğlu

Balıkoğlu

İnal

et al. 2018

Materials Today Communications

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In this paper, an experimental investigation on the low-velocity impact response of wood skinned hybrid sandwich composites was presented. Several alternative design configurations were developed by using rubber-cork and E-glass composite layers between the foam core and wood skin in order to improve the impact performance of conventional sandwich composites. Low-velocity impact (LVI) testing was performed using a drop weight test machine at different impact energies and destructive cross-sectioning was performed to examine the interior damage growth and penetration depth of the specimens. The impact performance of the specimens was evaluated in terms of energy absorption capacity, maximum contact force and penetration depth. The multi-core design concept significantly improved the energy absorption capacity with a reduced extent of impact induced damage. The proportion of recyclable materials in each configuration and the energy absorption level per unit cost were also presented for the interest of product designers.

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“…Besides, after an impact, there is a drastic reduction in the strength due to delamination and core damage. 12 There have been many studies on the strengthening or replacing of the face sheet or core material: for instance, Oana et al 2,13,14 studied the impact behavior and damage features of polymer core composite face sheets, while Demircio glu 15,16 and John 17 studied the changes in the core materials for different values of impact energy on a wood-based sandwich panel. Similarly, Wu et al 18 evaluated the impact performance by applying various face sheets to the polymeric foam core sandwich panels.…”

Section: Introductionmentioning

confidence: 99%

Impact behavior of hollow glass bubble reinforced foam core LNG insulation panel in cryogenic temperature

Lee

Bae

Hwang

et al. 2020

Journal of Composite Materials

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Composite sandwich panels are applied to numerous structures owing to their excellent mechanical properties and thermal performance. In marine craft, sandwich panels are located on the inner walls as an insulation system for the liquefied natural gas (LNG) cargo containment systems (CCSs). Polyurethane foam (PUF), as an insulation material, is commonly used as the core material against a cryogenic temperature of –163°C for the LNG CCSs. Owing to its excellent thermal performance that prevents heat flow from the outside, and because LNG is transported at cryogenic temperatures, PUF is the preferred choice as a core material. However, the LNG CCS is subjected to fluid impact load due to sloshing during a laden voyage, and therefore, the core material needs to be reinforced. In this study, a reinforcement material made of hollow glass bubbles (HGBs) was added to PUF to help withstand the sloshing loads, and the performance of the specimens was investigated in terms of their impact strength and absorption energy. The mechanical impact strength of the final products was investigated through an impact test at cryogenic temperatures and the absorption energy was analyzed along with the dynamic compressive behavior of the sandwich panels.

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Compression after low velocity impact tests of marine sandwich composites: Effect of intermediate wooden layers

Cited by 30 publications

References 19 publications

Experimental investigation of impact behavior of wood-based sandwich structures

Experimental investigation of impact behavior of wood-based sandwich structures

Experimental investigation on low-velocity impact response of wood skinned sandwich composites with different core configurations

Impact behavior of hollow glass bubble reinforced foam core LNG insulation panel in cryogenic temperature

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