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Fracture Toughness and Work of Fracture of Hydrated, Dehydrated, and Ashed Bovine Bone by Jiahau Yan; Amit Daga; Rajendra Kumar; John J. Mecholsky is a Medicine article available to read on EtoBox.

What is Fracture Toughness and Work of Fracture of Hydrated, Dehydrated, and Ashed Bovine Bone about?

Bone, a tri-phase composite, consists of nano-sized apatite minerals, an organic component, and water. Heat-treated bovine cortical bone has been proposed as a candidate for void-filling bone substitute. However, the toughness of heat-treated bone is not yet fully studied. Fracture toughness (K c ) and work of fracture (W f ) of hydrated, dehydrated, and ashed bovine bone were estimated using a single-edge V-notched beam method. Thermal gravimetric analysis and differential thermal analysis were used to determine the temperature at which the organics and water were removed. Dehydrated specimens were obtained by placing the samples in a 60 1C vacuum oven for 24 h or a 110 1C furnace for 2 h. Ashed specimens were obtained by heat-treating samples at 600 1C for 24 h. K c of bovine specimens decreased from 5.5 MPa Á m 1/2 for hydrated bone, to 3.8 MPa Á m 1/2 for dehydrated specimens, and to 0.36 MPa Á m 1/2 for ashed specimens. W f decreased from 7.1 to 1.1 kJ/m 2 for dehydrated specimens, and to 0.04 kJ/m 2 for ashed specimens. The main reasons for the significant decreases in K c and W f may be attributed to water's ability in stabilizing collagen structure and to the organics' abil

Who reads Fracture Toughness and Work of Fracture of Hydrated, Dehydrated, and Ashed Bovine Bone?

Author

Jiahau Yan; Amit Daga; Rajendra Kumar; John J. Mecholsky

Publisher

Elsevier Science; Elsevier ; Elsevier BV (ISSN 0021-9290)

Published

2008

Language

EN

Field

Medicine (Health Sciences)