Anisotropic mechanical behaviors and their structural dependences of crossed-lamellar structure in a bivalve shell

Jiao, Dan; Liu, Z.Q.; Qu, R.T.; Zhang, Z.F.

doi:10.1016/j.msec.2015.11.003

Cited by 35 publications

(37 citation statements)

References 38 publications

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“…In the figure, the average displacements for dry and wet samples are approximately 0.594 ± 0.044 mm and 0.698 ± 0.078 mm, respectively, at the time of stress reaching the maximum. It is well known that biomechanical properties depend greatly on hydration [28]. The results of the three-point bending experiment show that moisture content influenced the bending strength of the dactylopodites and that the failure stress as greater for the wet dactylopodites than for the dry ones, which is consistent with the results conducted by Hepburn et al on wet and dry specimens of mud crab (Scylla serratu) [29].…”

Section: Mechanical Propertiessupporting

confidence: 89%

Microstructure and Mechanical Properties of the Dactylopodites of the Chinese Mitten Crab (Eriocheir sinensis)

Wang

et al. 2018

Applied Sciences

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Abstract:The dactylopodites of the Chinese mitten crab (Eriocheir sinensis) have evolved extraordinary resistance to wear and impact loading after direct contact with rough surfaces or clashing with hard materials. In this study, the microstructure, components, and mechanical properties of the dactylopodites of the Chinese mitten crab were investigated. Images from a scanning electron microscope show that the dactylopodites' exoskeleton was multilayered, with an epicuticle, exocuticle, and endocuticle. Cross sections and longitudinal sections of the endocuticle revealed a Bouligand structure, which contributes to the dactylopodites' mechanical properties. The main organic constituents of the exoskeleton were chitin and protein, and the major inorganic compound was CaCO 3 , crystallized as calcite. Dry and wet dactylopodites were brittle and ductile, respectively, characteristics that are closely related to their mechanical structure and composition. The findings of this study can be a reference for the bionic design of strong and durable structural materials.

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Section: Mechanical Propertiessupporting

confidence: 89%

Microstructure and Mechanical Properties of the Dactylopodites of the Chinese Mitten Crab (Eriocheir sinensis)

Wang

et al. 2018

Applied Sciences

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“…In particular, the structural orientations are constantly varied over 3D space in many cases, leading to distinctly complex paths for crack extension as compared to simple in‐plane deflection or kinking. This is represented by the crossed‐lamellar structure, which is encompassed in a variety of mollusk shells . Such structure generally involves a hierarchical organization spanning at least two levels of dimensions.…”

Section: Toughening By Complexity Of Structural Orientationsmentioning

confidence: 99%

“…Such structure generally involves a hierarchical organization spanning at least two levels of dimensions. Taking the bivalve Strongylocentrotus purpuratus ( S. purpuratus ) shell for example, the lamellae with different alignments of lower‐level aragonite platelets are alternatively assembled along torturous boundaries; the platelets within each lamella exhibit the same orientations, as shown in Figure a. These lamellae often have irregular geometries and display mutual intersections among them.…”

Section: Toughening By Complexity Of Structural Orientationsmentioning

confidence: 99%

“…Toughening effects in biological materials with crossed‐lamellar and Bouligand structures. a) Schematic illustration of the crossed‐lamellar structure and complexity of cracking paths in bivalve S. purpuratus shell . The differing orientations of aragonite platelets in adjacent lamellae are indicated by the white arrows.…”

Section: Toughening By Complexity Of Structural Orientationsmentioning

confidence: 99%

“…c) Variations in the crack driving force in terms of the strain energy release rate with crack extension (solid curve) and the local stress intensities for mode I, II, and III stress‐states, K I , K II , and K III (dashed curves), normalized by those for initially pure mode I loading as a function of the twisted angle in the Bouligand structure . (a) Adapted with permission . Copyright 2015, Elsevier.…”

Section: Toughening By Complexity Of Structural Orientationsmentioning

confidence: 99%

See 2 more Smart Citations

Structural Orientation and Anisotropy in Biological Materials: Functional Designs and Mechanics

Liu

Zhang

Ritchie

2020

Adv Funct Materials

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Biological materials exhibit anisotropic characteristics because of the anisometric nature of their constituents and their preferred alignment within interfacial matrices. The regulation of structural orientations is the basis for material designs in nature and may offer inspiration for man‐made materials. Here, how structural orientation and anisotropy are designed into biological materials to achieve diverse functionalities is revisited. The orientation dependencies of differing mechanical properties are introduced based on a 2D composite model with wood and bone as examples; as such, anisotropic architectures and their roles in property optimization in biological systems are elucidated. Biological structural orientations are designed to achieve extrinsic toughening via complicated cracking paths, robust and releasable adhesion from anisotropic contact, programmable dynamic response by controlled expansion, enhanced contact damage resistance from varying orientations, and simultaneous optimization of multiple properties by adaptive structural reorientation. The underlying mechanics and material‐design principles that could be reproduced in man‐made systems are highlighted. Finally, the potential and challenges in developing a better understanding to implement such natural designs of structural orientation and anisotropy are discussed in light of current advances. The translation of these biological design principles can promote the creation of new synthetic materials with unprecedented properties and functionalities.

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Scalable Manufacturing of Mechanical Robust Bioinspired Ceramic–Resin Composites with Locally Tunable Heterogeneous Structures

et al. 2023

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Lightweight structural materials with a unique combination of high stiffness, strength, toughness, and hardness, are highly desired yet challenging to be artificially fabricated. Biological structural materials, on the other hand, ingeniously integrate multiple mutually exclusive mechanical properties together relying on their hierarchically heterogeneous structures bonded with gradient interfaces. Here, a scalable bottom‐up approach combining continuous nanofiber‐assisted evaporation‐induced self‐assembly with laminating, pressure‐less sintering and resin infiltration is reported to fabricate bioinspired heterogeneous ceramic–resin composites with locally tunable microstructure to fulfill specific properties. A gradient interlayer is introduced to provide a gradual transition between adjacent heterogeneous layers, effectively alleviating their property mismatch. The optimized heterogeneous nacre‐like composite, as a demonstration, exhibits an attractive combination of low density (≈2.8 g cm−3), high strength (≈292 MPa), toughness (≈6.4 MPa m1/2), surface hardness (≈1144 kgf mm−2) and impact‐resistance, surpassing the overall performance of engineering alumina. This material‐independent approach paves the way for designing advanced bioinspired heterogeneous materials for diverse structural and functional applications.

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Anisotropic mechanical behaviors and their structural dependences of crossed-lamellar structure in a bivalve shell

Cited by 35 publications

References 38 publications

Microstructure and Mechanical Properties of the Dactylopodites of the Chinese Mitten Crab (Eriocheir sinensis)

Microstructure and Mechanical Properties of the Dactylopodites of the Chinese Mitten Crab (Eriocheir sinensis)

Structural Orientation and Anisotropy in Biological Materials: Functional Designs and Mechanics

Scalable Manufacturing of Mechanical Robust Bioinspired Ceramic–Resin Composites with Locally Tunable Heterogeneous Structures

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