Mechanically excellent nacre-inspired protective steel-concrete composite against hypervelocity impacts

Abstract Steel–concrete (SC) composite widely used in military defensive project is due to its impressive mechanical properties, long-lived service, and low cost. However, the growing use of hypervelocity kinetic weapons in the present war puts forward higher requirements for the anti-explosion and...

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Autores principales:	Yong Mei, Jinming Liu, Yuan Cui, Feng Li, Xuke Tang, Miao Sun, Ruiqiang Chi, Yongbo Zhang, Ao Zhang, Ke Chen
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/076d712cd2994369952c0e2ef8f52d9c
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spelling	oai:doaj.org-article:076d712cd2994369952c0e2ef8f52d9c2021-11-14T12:22:11ZMechanically excellent nacre-inspired protective steel-concrete composite against hypervelocity impacts10.1038/s41598-021-01308-02045-2322https://doaj.org/article/076d712cd2994369952c0e2ef8f52d9c2021-11-01T00:00:00Zhttps://doi.org/10.1038/s41598-021-01308-0https://doaj.org/toc/2045-2322Abstract Steel–concrete (SC) composite widely used in military defensive project is due to its impressive mechanical properties, long-lived service, and low cost. However, the growing use of hypervelocity kinetic weapons in the present war puts forward higher requirements for the anti-explosion and penetration performance of military protection engineering. Here, inspired by the special ‘brick-and-mortar’ (BM) structural feature of natural nacre, we successfully construct a nacre-inspired steel–concrete (NISC) engineering composite with 2510 kg/m3, possessing nacre-like lamellar architecture via a bottom-up assembling technique. The NISC engineering composite exhibits nacreous BM structural similarity, high compressive strength of 68.5 MPa, compress modulus of 42.0 GPa, Mohs hardness of 5.5, Young’s modulus of 41.5 GPa, and shear modulus of 18.4 GPa, higher than pure concrete. More interestingly, the hypervelocity impact tests reveal the penetration capability of our NISC target material is obviously stronger than that of pure concrete, enhanced up to about 46.8% at the striking velocity of 1 km/s and approximately 30.9% at the striking velocity of 2 km/s, respectively, by examining the damages of targets, the trajectories, penetration depths, and residual projectiles. This mechanically integrated enhancement can be attributed to the nacre-like BM structural architecture derived from assembling the special steel-bar array frame-reinforced concrete platelets. This study highlights a key role of nacre-like structure design in promoting the enhanced hypervelocity impact resistance of steel–concrete composites.Yong MeiJinming LiuYuan CuiFeng LiXuke TangMiao SunRuiqiang ChiYongbo ZhangAo ZhangKe ChenNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-12 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Yong Mei Jinming Liu Yuan Cui Feng Li Xuke Tang Miao Sun Ruiqiang Chi Yongbo Zhang Ao Zhang Ke Chen Mechanically excellent nacre-inspired protective steel-concrete composite against hypervelocity impacts
description	Abstract Steel–concrete (SC) composite widely used in military defensive project is due to its impressive mechanical properties, long-lived service, and low cost. However, the growing use of hypervelocity kinetic weapons in the present war puts forward higher requirements for the anti-explosion and penetration performance of military protection engineering. Here, inspired by the special ‘brick-and-mortar’ (BM) structural feature of natural nacre, we successfully construct a nacre-inspired steel–concrete (NISC) engineering composite with 2510 kg/m3, possessing nacre-like lamellar architecture via a bottom-up assembling technique. The NISC engineering composite exhibits nacreous BM structural similarity, high compressive strength of 68.5 MPa, compress modulus of 42.0 GPa, Mohs hardness of 5.5, Young’s modulus of 41.5 GPa, and shear modulus of 18.4 GPa, higher than pure concrete. More interestingly, the hypervelocity impact tests reveal the penetration capability of our NISC target material is obviously stronger than that of pure concrete, enhanced up to about 46.8% at the striking velocity of 1 km/s and approximately 30.9% at the striking velocity of 2 km/s, respectively, by examining the damages of targets, the trajectories, penetration depths, and residual projectiles. This mechanically integrated enhancement can be attributed to the nacre-like BM structural architecture derived from assembling the special steel-bar array frame-reinforced concrete platelets. This study highlights a key role of nacre-like structure design in promoting the enhanced hypervelocity impact resistance of steel–concrete composites.
format	article
author	Yong Mei Jinming Liu Yuan Cui Feng Li Xuke Tang Miao Sun Ruiqiang Chi Yongbo Zhang Ao Zhang Ke Chen
author_facet	Yong Mei Jinming Liu Yuan Cui Feng Li Xuke Tang Miao Sun Ruiqiang Chi Yongbo Zhang Ao Zhang Ke Chen
author_sort	Yong Mei
title	Mechanically excellent nacre-inspired protective steel-concrete composite against hypervelocity impacts
title_short	Mechanically excellent nacre-inspired protective steel-concrete composite against hypervelocity impacts
title_full	Mechanically excellent nacre-inspired protective steel-concrete composite against hypervelocity impacts
title_fullStr	Mechanically excellent nacre-inspired protective steel-concrete composite against hypervelocity impacts
title_full_unstemmed	Mechanically excellent nacre-inspired protective steel-concrete composite against hypervelocity impacts
title_sort	mechanically excellent nacre-inspired protective steel-concrete composite against hypervelocity impacts
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/076d712cd2994369952c0e2ef8f52d9c
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Mechanically excellent nacre-inspired protective steel-concrete composite against hypervelocity impacts

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