The influence of low velocity repeated impacts on residual compressive properties of honeycomb sandwich structures

Akatay, Abdullah; Bora, Mustafa Özgür; Çoban, Onur; Fi̇dan, Sinan; Tuna, Volkan

doi:10.1016/j.compstruct.2015.02.057

Cited by 85 publications

(37 citation statements)

References 31 publications

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“…During service life, sandwich structures may be subjected to O several severe impacts arising from operational events like collision, flying debris, tool drop or bird strike. Among these, low velocity impacts can severely reduce the strength of the whole structure due to indentation and localized internal skin and/or core damage [11,12], without any perception on the impacted side, [13][14][15]. As mentioned by Feng and Aymerich [15] the low velocity impact can develop various damage patterns in sandwich composites as resulting from different failure mechanisms as: matrix cracking, fiber fracture, face-core debonding through delaminations, and core crushing.…”

Section: Introductionmentioning

confidence: 99%

Low velocity failure and integrity assessment of foam core sandwich panels

Mocian

Constantinescu

Sorohan

et al. 2019

Frattura Ed Integrità Strutturale

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Impact resistance and energy absorbing capability are of great interest in the design of composite sandwich structures. This paper experimentally studies damage, failure and energy absorption properties of foam core sandwich panels with aluminum and glass fiber reinforced plastic (GFRP) facesheets subjected to low velocity impact. Tests are performed using a drop weight impact tower at different impact velocities. The energy absorbing capabilities of aluminum and composite facesheet sandwich panels with PUR and PS foam core are evaluated by means of absorbed energy-time histories and by specific parameters as normalized absorbed energy, specific energy absorption, and crush force efficiency. Stiffer panels behave better at lower impact velocities, while more ductile ones do better if impact energy is increased.

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Section: Introductionmentioning

confidence: 99%

Low velocity failure and integrity assessment of foam core sandwich panels

Mocian

Constantinescu

Sorohan

et al. 2019

Frattura Ed Integrità Strutturale

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“…Honeycomb sandwich panels are widely used in many engineering disciplines [1,2,3,4]. Though different forms of sandwich cores, such as aluminium foam [5,6] and Nomex honeycomb [7], have shown more attractive properties, common aluminum honeycomb sandwich panels still play an important role in engineering applications especially on unmanned spacecraft as major load-bearing components [8].…”

Section: Introductionmentioning

confidence: 99%

Improved shielding structure with double honeycomb cores for hyper-velocity impact

Liu

Zhang

2015

Mechanics Research Communications

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“…Atas and Dogan [8] proposed experimental investigation on the repeated impact response of glass/epoxy composites and indicated that impact resistance of glass/ epoxy composites decreases with increasing impact number due to material degradation. Akatay et al [9] and Balcı et al [10] conducted experimental results of dynamic responses of repaired sandwich panel which are composed of fiberglass composite face sheets and aluminum sandwich core under repeated impacts. Truong et al [11] proposed experimental research on steel grillage under repeated impacts.…”

Section: Introductionmentioning

confidence: 99%

Experimental Research on Dynamic Behavior of Circular Mild Steel Plates with Surface Cracks Subjected to Repeated Impacts in Low Temperature

Zeng

Chen

et al. 2020

Shock and Vibration

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Experimental investigations on the mechanical responses of fully clamped circular plates with prefabricated crack at room temperature and low temperature have been conducted. Initial cracks with different lengths were prefabricated by the electrical discharge machining method. Low ambient temperature was created by the liquid nitrogen in a low-temperature chamber, and a dropping hammer was dropped from the same height with a constant impact energy of 5 J to carry out the repeated impact. Experimental test results show that the prefabricated crack has a significant influence on the mechanical behavior of the thin plates. The maximum impact force decreases with increase of the crack length, and the threshold impact number until fracture decreases with increase of the crack length. It is also observed from the test results that the maximum impact force increases with decrease of the temperature, while threshold impact number until fracture and the plastic permanent deformation decreases due to the brittleness of the material in low temperature. The present investigations provide useful insight into the failure mechanism of the clamped thin plate with initial crack under low-velocity repeated impacts in low temperature, which will lead to a guideline for research and design of marine structures in the arctic area.

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The influence of low velocity repeated impacts on residual compressive properties of honeycomb sandwich structures

Cited by 85 publications

References 31 publications

Low velocity failure and integrity assessment of foam core sandwich panels

Low velocity failure and integrity assessment of foam core sandwich panels

Improved shielding structure with double honeycomb cores for hyper-velocity impact

Experimental Research on Dynamic Behavior of Circular Mild Steel Plates with Surface Cracks Subjected to Repeated Impacts in Low Temperature

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