干旱区生态环境知识资源中心(Arid): Toughening mechanisms of the elytra of the diabolical ironclad beetle

Arid

DOI	10.1038/s41586-020-2813-8
	Toughening mechanisms of the elytra of the diabolical ironclad beetle
	Rivera, Jesus; Hosseini, Maryam Sadat; Restrepo, David; Murata, Satoshi; Vasile, Drago; Parkinson, Dilworth Y.; Barnard, Harold S.; Arakaki, Atsushi; Zavattieri, Pablo; Kisailus, David
通讯作者	Kisailus, D
来源期刊	NATURE
ISSN	0028-0836
EISSN	1476-4687
出版年	2020
卷号	586 期号:7830 页码:543-+
英文摘要	Joining dissimilar materials such as plastics and metals in engineered structures remains a challenge(1). Mechanical fastening, conventional welding and adhesive bonding are examples of techniques currently used for this purpose, but each of these methods presents its own set of problems(2) such as formation of stress concentrators or degradation under environmental exposure, reducing strength and causing premature failure. In the biological tissues of numerous animal and plant species, efficient strategies have evolved to synthesize, construct and integrate composites that have exceptional mechanical properties(3). One impressive example is found in the exoskeletal forewings (elytra) of the diabolical ironclad beetle, Phloeodes diabolicus. Lacking the ability to fly away from predators, this desert insect has extremely impact-resistant and crush-resistant elytra, produced by complex and graded interfaces. Here, using advanced microscopy, spectroscopy and in situ mechanical testing, we identify multiscale architectural designs within the exoskeleton of this beetle, and examine the resulting mechanical response and toughening mechanisms. We highlight a series of interdigitated sutures, the ellipsoidal geometry and laminated microstructure of which provide mechanical interlocking and toughening at critical strains, while avoiding catastrophic failure. These observations could be applied in developing tough, impact- and crush-resistant materials for joining dissimilar materials. We demonstrate this by creating interlocking sutures from biomimetic composites that show a considerable increase in toughness compared with a frequently used engineering joint.
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000580645800029
WOS关键词	STRUCTURAL DESIGN ; COLEOPTERA ; SURFACES ; INTERFACES
WOS类目	Multidisciplinary Sciences
WOS研究方向	Science & Technology - Other Topics
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/326986
作者单位	[Rivera, Jesus; Kisailus, David] Univ Calif Riverside, Mat Sci & Engn Program, Riverside, CA 92521 USA; [Hosseini, Maryam Sadat; Restrepo, David; Zavattieri, Pablo] Purdue Univ, Lyles Sch Civil Engn, W Lafayette, IN 47907 USA; [Restrepo, David] Univ Texas San Antonio, Dept Mech Engn, San Antonio, TX USA; [Murata, Satoshi; Arakaki, Atsushi] Tokyo Univ Agr & Technol, Inst Global Innovat Res, Koganei, Tokyo, Japan; [Vasile, Drago; Kisailus, David] Univ Calif Riverside, Dept Chem & Environm Engn, Riverside, CA 92521 USA; [Parkinson, Dilworth Y.; Barnard, Harold S.] Lawrence Berkeley Natl Lab, Adv Light Source, Berkeley, CA USA; [Kisailus, David] Univ Calif Irvine, Dept Mat Sci & Engn, Irvine, CA 92697 USA
推荐引用方式 GB/T 7714	Rivera, Jesus,Hosseini, Maryam Sadat,Restrepo, David,et al. Toughening mechanisms of the elytra of the diabolical ironclad beetle[J],2020,586(7830):543-+.
APA	Rivera, Jesus.,Hosseini, Maryam Sadat.,Restrepo, David.,Murata, Satoshi.,Vasile, Drago.,...&Kisailus, David.(2020).Toughening mechanisms of the elytra of the diabolical ironclad beetle.NATURE,586(7830),543-+.
MLA	Rivera, Jesus,et al."Toughening mechanisms of the elytra of the diabolical ironclad beetle".NATURE 586.7830(2020):543-+.