Anti-blast properties of 6063-T5 aluminum alloy circular tubes coated with polyurea elastomer: Experiments and numerical simulations

Wu, Gang; Wang, Xin; Ji, Chong; Gao, Zhenru; Jiang, Tao; Zhao, Changxiao; Liu, Yujun

doi:10.1016/j.tws.2021.107842

Cited by 33 publications

(8 citation statements)

References 25 publications

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“…It also has an adjustable elastic modulus, tensile strength, and ductility [12]. The strong adhesion to different material interfaces has significantly promoted its application in the protective performance enhancement of concrete slabs [13,14], metal plates [15][16][17], ceramic panels [18,19], porous materials [20,21] and fiber-reinforced composite structures [22][23][24] to blast and impact. These studies have indicated that polyurea layers can not only restrain metal plate deformation with their high dynamic strength and toughness but also increase the energy absorption capacity through glass transition and large ductile deformation [25][26][27].…”

Section: Introductionmentioning

confidence: 99%

“…The strengthening effects of polyurea-coated metal panels were concluded to be glass transition, self-closing [31], cracking, spallation, and local fragmentation mechanisms, and the backside coating method towards a better enhancing effect [25]. The polyurea coating on ceramic panels can also improve ballistic protection by reducing energy consumption during the glass transition of polyurea [15], which can prevent local failure of the ceramic tiles and increase the perforation damage volume of the ceramic cone. But the advantage shown is a non-monotonous relationship with thickness, and the front side coating is proposed as the best configuration, while the sandwiched polyurea layer even weakens the protective performance of composite armor [17].…”

Section: Introductionmentioning

confidence: 99%

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Strengthening Mechanism of Polyurea to Anti-Penetration Performance of Spherical Cell Porous Aluminum

Fan,

Guo,

Cui

et al. 2024

Polymers

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A composite structure containing a metallic skeleton and polyurea elastomer interpenetrating phase was fabricated, and its anti-penetration performance for low-velocity large mass fragments was experimentally studied. The protection capacity of three polyurea was compared based on the penetration resistance force measurement. Results show that the polyurea coating layer at the backside improves the performance of the polyurea-filled spherical cell porous aluminum (SCPA) plate due to its backside support effect and phase transition effect, which are accompanied by a large amount of energy absorption. The frontal-side-coated polyurea layer failed to shear and provided a very limited strengthening effect on the penetration resistance of the interpenetrating phase composite panel. The filling polyurea in SCPA increased the damage area and formed a compression cone for the backside coating layer, leading to a significant stress diffusion effect. The anti-penetration performance was synergistically improved by the plug block effect of the interpenetrating phase composite and the backside support effect of the PU coating layer. Compared with SCPA, the initial impact failure strength and the average resistance force of the composite plate were improved by 120–200% and 108–274%, respectively.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Strengthening Mechanism of Polyurea to Anti-Penetration Performance of Spherical Cell Porous Aluminum

Fan,

Guo,

Cui

et al. 2024

Polymers

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show abstract

“…14 The existing researches on impact resistance of polyurea-coated metal plates found that due to the viscoelastic properties of polyurea elastomer, part of the energy generated by the metal plate after initial loading would be absorbed and dispersed by the polyurea layer, which can effectively reduce the plastic deformation of metal plate, and the impact protection effect of polyureacoated metal plate was greatly affected by the polyurea coating position. [15][16][17][18][19] Amini et al 20 studied the impact resistance of polyurea-coated steel plate, and believed that the impact protection effect was better when polyurea was coated on the load-receiving face of steel plate. Mohotti et al 21 studied the impact resistance of polyureacoated aluminum plate, and concluded that polyurea coating on the opposite to load-receiving face was conducive to the improvement of the impact resistance.…”

Section: Introductionmentioning

confidence: 99%

Enhancement effect of polyurea coating on the impact resistance of aluminum foam

Guo

Song

Sun

et al. 2023

J of Applied Polymer Sci

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A polyurea coating was prepared to enhance the impact protection performance of aluminum foam, and its mechanical properties were analyzed. Polyurea‐coated aluminum foam composite specimens were prepared by coating the polyurea on the surface of aluminum foam. The mechanical properties of composite specimens under quasi‐static and dynamic loading were tested, and the stress–strain relationship at different strain rates was analyzed. The deformation process and failure mode of typical specimens under different loading conditions were discussed. The influence of polyurea coating on the energy absorption characteristics of aluminum foam was explained. The results show that when the polyurea is coated on the end surface of aluminum foam specimen, the sawtooth oscillation in the yield plateau stage of the stress–strain curve is weakened. The existence of polyurea coating makes the stress transfer of cell wall of aluminum foam uniform, and can effectively prevent the damage caused by the splash of aluminum foam fragments under high‐speed impact load. Coating polyurea on the opposite to load‐receiving surface of aluminum foam specimen can effectively improve the yield stress of composite specimen under dynamic load, and make the specimen still maintain good integrity after failure. When the polyurea is coated on the end surface of aluminum foam specimen, the final energy absorption per unit volume and the ideal energy absorption efficiency peak of the specimen are improved.

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“…Dinesh et al (2021) conducted numerical simulations to study the anti-explosion performances of PU-reinforced steel plates with different coating methods and different coating thicknesses under the impact of different equivalent trinitrotoluene (TNT) explosives. Wu et al (2021a) compared the damage effects on aluminum alloy circular pipes with different PU coating methods under explosion loads through experiments and numerical simulations and found that the damage degree of the aluminum alloy pipe under impact loads can be reduced by coating with PU. Dewapriya and Miller (2021) demonstrated the penetration resistance of nano-PU-layer-reinforced aluminum foil films through molecular dynamics simulations.…”

Section: Introductionmentioning

confidence: 99%

High-hardness polyurea coated steel plates subjected to combined loadings of shock wave and fragments

Zhang

Wang

et al. 2022

Lat. Am. j. solids struct.

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To investigate the effect of polyurea on the protective performance of a steel target plate under the combination of shock wave and fragments, the failure characteristics, damage process and micro mechanism of the polyurea coated steel plates with different coating methods under the combination of explosion shock waves and fragments were analyzed through experiments and numerical simulations. The results showed that single-sided coatings aggravated the damage of target plate when the coating thickness was 2 mm. While the polyurea thickness greater than 4 mm could significantly reduce the damage degree of the steel plate. When the polyurea was coated on the double sides, it would aggravate the damage, no matter how thick the polyurea was. Through microscopic research, it was found that the front coated polyurea was severely ablated by detonation products, which greatly reduce its energy absorption efficiency. The polyurea coated on the back underwent tensile fracture under the influence of tensile stress wave. The breaking of intramolecular hydrogen bond of polyurea was the key to the energy absorption of polyurea.

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Anti-blast properties of 6063-T5 aluminum alloy circular tubes coated with polyurea elastomer: Experiments and numerical simulations

Cited by 33 publications

References 25 publications

Strengthening Mechanism of Polyurea to Anti-Penetration Performance of Spherical Cell Porous Aluminum

Strengthening Mechanism of Polyurea to Anti-Penetration Performance of Spherical Cell Porous Aluminum

Enhancement effect of polyurea coating on the impact resistance of aluminum foam

High-hardness polyurea coated steel plates subjected to combined loadings of shock wave and fragments

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