Enhanced Mechanism of Fracture Toughness in Cannon Bone

Bin Chen; X. Peng; S. Sun

doi:10.4028/www.scientific.net/KEM.368-372.1651

Paper Titles

Effect of Heat Treatment on Specific Surface Area of Si-C-O Fibers
p.1639

Prediction of the Properties of an Alumina Green Body Using an Artificial Neural Network by a New PSO-Gain Backpropagation Algorithm
p.1642

Optimal Design for Mechanical Properties of Composite with Combination of Genetic Algorithm and Artificial Neural Network
p.1645

Strength Model of Melt-Growth Composite Ceramics
p.1648

Enhanced Mechanism of Fracture Toughness in Cannon Bone
p.1651

Damage Model and Failure Stress of Ceramic Particle Ni Base Alloy Composite
p.1654

Damage Finite Element Analysis of Nano- Composite Ceramics
p.1657

Size Dependent Thermal Expansion Coefficient of Rod-Shaped Oxide Eutectic Ceramic
p.1659

Negative Thermal Expansion of Yb₂Mo₃O₁₂ and Lu₂Mo₃O₁₂
p.1662

HomeKey Engineering MaterialsKey Engineering Materials Vols. 368-372Enhanced Mechanism of Fracture Toughness in Cannon...

Enhanced Mechanism of Fracture Toughness in Cannon Bone

Abstract:

As a typical biological material, bone possesses high fracture strength and fracture toughness, which are closely related to its exquisite microstructure. SEM observation of a cannon bone shows that the bone is a kind of layered bioceramic composite consisting of hydroxyapatite sheets and collagen matrix. The hydroxyapatite sheets are of long and thin shape, distributing in parallel. The fracture toughness of the bone is analyzed with the representative model of the hydroxyapatite sheets and the concept of maximum pullout energy. It is shown that the lathy shape as well as the parallel distribution of the hydroxyapatite sheets increases the pullout energy and endows the bone with high fracture toughness.