Fiber-Continuous Panel-Pillar Structure In Insect Cuticle And Biomimetic Research

Keywords

Biomimetic fabrication; Dorcus titanus cuticle; Fiber-continuous panel-pillar structure; Model analysis

Abstract

Scanning electron microscope (SEM) observation shows that the cuticle of Dorcus titanus is a kind of natural sandwich structure consisting of upper and lower panels and middle pillars. The observation also shows that the material of the sandwich structure is a biocomposite consisting of chitin-fiber layers and sclerous-protein matrix. More careful observation shows that the fiber layers in the sandwich structure continuously join the panels and the pillars to form a fiber-continuous panel-pillar sandwich structure. The strength of the fiber-continuous panel-pillar structure is investigated and compared with that of the non-fiber-continuous panel-pillar structure based on their representative models. It is shown that the fiber-continuous panel-pillar structure has higher ultimate strength compared to that of the non-fiber-continuous panel-pillar structure. Based on the observations and analyses, the fiber-continuous panel-pillar structure is biomimetically fabricated with a special mould and process. The ultimate strength of the structure is tested and compared with that of the non-fiber-continuous panel-pillar structure. It is indicated that the ultimate strength of the fiber-continuous panel-pillar structure is distinctly larger than that of the non-fiber-continuous panel-pillar structure.

Publication Date

12-5-2015

Publication Title

Materials and Design

Volume

86

Number of Pages

686-691

Document Type

Article

Personal Identifier

scopus

DOI Link

https://doi.org/10.1016/j.matdes.2015.07.102

Socpus ID

84942088925 (Scopus)

Source API URL

https://api.elsevier.com/content/abstract/scopus_id/84942088925

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