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Microstructure characteristics and mechanical properties of Meretrix lusoria shell
Author(s) -
Zhao Qian,
Lin Zhaohua,
Liang Yunhong,
Liu Chunbao,
Zhang Zhihui,
Yu Zhenglei,
Ren Luquan
Publication year - 2018
Publication title -
microscopy research and technique
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.536
H-Index - 118
eISSN - 1097-0029
pISSN - 1059-910X
DOI - 10.1002/jemt.23107
Subject(s) - microstructure , lamellar structure , materials science , composite material , shell (structure) , porosity , structural engineering , engineering
The microstructure and mechanical properties of Meretrix lusoria shell were investigated. M. lusoria shell was comprised of three layers (outer layer, middle layer and inner layer). Outer layer with serried mastoid structure enhanced the connection strength with middle layer. The middle layer consisted of blocky pattern structure with porosity and crossed‐lamellar structure. The inner layer exhibited the typical crossed‐lamellar structure. Combined with structure characteristic, phase of aragonite confirmed the crossed‐lamellar structure further, building material base for mechanical properties including flexure strength (296.26 MPa), compression strength (6.71 MPa) and crack arrest ability. Microstructure of the shell was the function base of crack deflection phenomenon, which dispersed and defused the applied load via the change of crack extension direction. The investigation of M. lusoria shell provided bionic models for the design and fabrication of bioinspired composites in engineering fields. Research Highlights Microstructure and mechanical properties of Meretrix lusoria shell were investigated. Crossed‐lamellar structure was the microstructure characterization. M. lusoria shell owned high flexure strength and crack arrest property.