20605 Evaluation of Crack Initiation and Propagation Mechanism and Life Time Prediction in Alumina for Artificial Joints

DOI Web Site

Bibliographic Information

Other Title
  • 20605 人工関節用アルミナにおけるき裂の発生・進展機構の評価と寿命予測(OS9 バイオエンジニアリング)

Abstract

Double torsion tests of alumina ceramics, which is used for the artificial joints, were carried out in air and physiological saline. The AE signals during crack propagation were measured and the excellent correlation between AE count rate and crack velocity was obtained. It was clarified by the authors' previous works that the maincrack formation could be detected by AE behavior before the final failure. Therefore, it is suggested that the fracture process consist of the maincrack formation and its propagation to final failure. Consequently, the present results enable the life time prediction considering both processes.

Journal

Keywords

Details 詳細情報について

Report a problem

Back to top