材料
Online ISSN : 1880-7488
Print ISSN : 0514-5163
ISSN-L : 0514-5163
ハイドロキシアパタイトのX線応力測定と強度評価
田中 啓介鈴木 幸治秋庭 義明堤 定美野浪 亨
著者情報
ジャーナル フリー

1994 年 43 巻 490 号 p. 785-791

詳細
抄録

The sin2ψ method of X-ray stress measurement was successfully applied to hipped hydroxy-apatite. The X-ray elastic constants of (072+352) diffraction by Mn-Kα radiation was determined experimentally. It is close to the value calculated from the elastic constants of single crystals on the basis of Kröner's model. The residual stress measured on the lapped and ground surfaces was tension, because micro-fracturing was predominant in the grinding process of hydroxyapatite. The bending fracture was started from the cluster of pores. The critical value of the stress intensity factor calculated from the bending strength and the size of the fracture origin was nearly equal to the fracture toughness determined by bending specimens with a single-edge V-shaped sharp notch.

著者関連情報
© 日本材料学会
前の記事 次の記事
feedback
Top