Papers by Author: Jian Guo Wang

Abstract: SEM observation on an abalone shell shows that the shell is a kind of bioceramic composite consisting of inorganic aragonite sheets and organic collagen protein matter. The aragonite sheets possess long and thin shape and are divided by the collagen protein matter, which compose a kind of laminated microstructure of the shell. The fracture surface energy of the laminated microstructure is investigated and compared with non-laminated microstructure based on its representative model. It shows that the fracture surface energy of the laminated microstructure is markedly larger than that of the non-laminated microstructure and endows the shell with high fracture toughness.

Abstract: The observation of scanning electron microscope (SEM) shows that a tibia bone is a kind of bioceramic composite consisting of hydroxyapatite layers and collagen protein matters. The hydroxyapatite layers are composed of hydroxyapatite sheets. The observation also shows there is a kind of interlaced microstructure of the hydroxyapatite sheets. The maximum pullout force of the interlaced microstructure was investigated and compared with that of the parallel microstructure. It is indicated that the maximum pullout force of the interlaced microstructure with a large interlaced angle is markedly larger than that of the parallel microstructure.