Tensile and shear behavior of microscale growth layers between nacre in red abalone

被引：19

作者：

Alghamdi, Saleh ^{[1
,2
]}

Du, Fen ^{[3
]}

Yang, Jie ^{[4
]}

Pinder, George ^{[1
]}

Tan, Ting ^{[1
]}

机构：

[1] Univ Vermont, Dept Civil Engn, 33 Colchester Ave, Burlington, VT 05405 USA

[2] Taif Univ, Dept Civil Engn, At Taif 21974, Saudi Arabia

[3] Vermont Tech Coll, Dept Mech Engn, 201 Lawrence Pl, Randolph, VT 05061 USA

[4] Univ Vermont, Dept Phys, 82 Univ Pl, Burlington, VT 05405 USA

来源：

JOURNAL OF THE MECHANICS AND PHYSICS OF SOLIDS | 2020年 / 138卷

基金：

美国国家科学基金会;

关键词：

Growth layer; Nacre; Ceramics; Fracture; Torsion; Tension; NATURAL NANOCOMPOSITE MATERIAL; BIOLOGICAL-MATERIALS; MECHANICAL CHARACTERIZATION; PINCTADA-MARGARITIFERA; ENERGY-DISSIPATION; SHELL; DEFORMATION; FRACTURE; MATRIX; NANOSCALE;

D O I：

10.1016/j.jmps.2020.103928

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The microscale growth layers between nacre possess distinctive aragonite structures, including columns, spherulites and organic matrices. High temporal resolution experiments were performed to elucidate the tensile and shear behavior of growth layers under dry and hydrated conditions. For a comparison, pure nacre was tested in corresponding conditions. For both nacre and growth layers, the presence of water enabled larger deformation of hydrated specimens than those of dry specimens. Hydrated growth layers exhibited lower strengths and larger failure strains than hydrated nacre under both shear and tensile loadings. Hydrated growth layers exhibited lower work-to-failure than hydrated nacre under shear, whereas they exhibited higher work-to-failure than hydrated nacre under tension. This work could further our understandings on the interfacial behavior of laminated natural materials, and may help the creation of high performance hierarchical composites. (C) 2020 Elsevier Ltd. All rights reserved.

引用

页数：20

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