Experimental investigation on the dynamic behaviour of aluminum foam sandwich plate under repeated impacts

Guo, Kailing; Zhu, Ling; Li, Yinggang; Yu, Tao; Shenoi, Ajit; Zhou, Qingwen

doi:10.1016/j.compstruct.2018.05.148

Cited by 53 publications

(12 citation statements)

References 14 publications

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“…The composites in service are likely to be exposed to repeated impact loads such as hail impact and the impact of stones thrown by the tires of a plane during landing [ 4 , 5 ]. Although a single low-velocity impact may not externally damage the material, the long-term effect of repeated impacts will accumulate the damage, which can degrade the material performance and even lead to the failure of an apparently undamaged structure [ 6 , 7 , 8 , 9 ]. Therefore, the repeated low-velocity impact behaviors of composite structures have attracted more and more attention.…”

Section: Introductionmentioning

confidence: 99%

Dynamic Response and Damage Accumulation of Laminated Composites under Repeated Low-Velocity Impacts

2023

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The mechanical response and damage accumulation of carbon-fiber-reinforced composite laminates subjected to repeated low-velocity impacts were experimentally investigated. The repeated impact tests were conducted on [902/−452/02/452]S quasi-isotropic and [902/02]2S cross-ply composite laminates under 16.8 J impact energy, respectively. For each impact, impact responses such as force-time, force-displacement and energy-time curves were recorded. The trends of peak force, maximum central displacement, energy absorption rate and bending stiffness with the increasing impact number were summarized, and the maximum number of repeated impacts corresponded to the occurrence of penetration events. The results showed that the delamination initiation, fiber breakage and penetration were the three typical characteristics describing the damage evolution of the repeated impacts. The damage accumulation of both the laminates was characterized by employing appropriate damage indices. By contrast, the quasi-isotropic laminates had higher impact resistance and damage tolerance, and their damage accumulation was relatively slower.

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Section: Introductionmentioning

confidence: 99%

Dynamic Response and Damage Accumulation of Laminated Composites under Repeated Low-Velocity Impacts

2023

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“…Current studies of AF panels are mainly focused on the dynamic responses under single impact, whereas the dynamic response under repeated impacts was studied only in a few papers. Zhu et al [20] and Guo et al [21] conducted single and repeated impacts on aluminium foam sandwich (AFS) plates at room (20 • C) and low (−60 • C) temperatures. The authors observed that the single impact deflections of AFS plates at −60 • C were smaller compared to those obtained at 20 • C. They associated this decrease with the increase in AF yield stress at low temperatures.…”

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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“…In the studies by Guo et al. 43 and Zhu et al, 44 single impact and multi-impact were performed on aluminum foam sandwich at room and at −60°C. The results shown that the single impact deflections of aluminum foam sandwich plates at 20°C were higher compared to those obtained at −60°C.…”

Section: Introductionmentioning

confidence: 99%

Evaluation of damage within sandwich honeycomb panels subjected to impact fatigue loading

Oubouzid

Keskes

Vieille

2021

Journal of Composite Materials

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This work was aimed at investigating damage evolution within sandwich panels consisting of aluminum skins and Nomex™ honeycomb core, with three different values of the core densities, subjected to multiple impacts. Repeated impacts at low energy were conducted using an impact fatigue machine. Bending tests were conducted to determine the residual stiffness after impacts in order to analyze the evolution of a damage parameter D. A model was therefore proposed for describing the changes in this parameter as a function of impact cycles N. After repeated impacts, the D(N) curves are characterized by an S-shaped curve. A good agreement is observed between model and experimental results, the maximum standard deviation being less than 7% for different densities. Microscopic observations of the impacted specimens were conducted in order to evaluate the crater growth (associated with permanent indentation). The inﬂuence of the number of impacts on the dimensions of the impact zone has also been evaluated. For all the core densities, the permanent indentation gradually increases as a function of impact cycles.

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Experimental investigation on the dynamic behaviour of aluminum foam sandwich plate under repeated impacts

Cited by 53 publications

References 14 publications

Dynamic Response and Damage Accumulation of Laminated Composites under Repeated Low-Velocity Impacts

Dynamic Response and Damage Accumulation of Laminated Composites under Repeated Low-Velocity Impacts

Nondestructive Evaluation of Aluminium Foam Panels Subjected to Impact Loading

Evaluation of damage within sandwich honeycomb panels subjected to impact fatigue loading

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