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A Study of Acoustic Emission Produced by Strength Test on Bio-Ceramics: The Dependency of Roughness on Mechanical and AE Characteristics

[+] Author Affiliations
Mitsuyuki Nakayama

Oyama National College of Technology, Oyama, Japan

Hideto Suzuki

Ibaraki University, Hitachi, Japan

Paper No. InterPACK2009-89119, pp. 365-370; 6 pages
  • ASME 2009 InterPACK Conference collocated with the ASME 2009 Summer Heat Transfer Conference and the ASME 2009 3rd International Conference on Energy Sustainability
  • ASME 2009 InterPACK Conference, Volume 1
  • San Francisco, California, USA, July 19–23, 2009
  • Conference Sponsors: Electronic and Photonic Packaging Division
  • ISBN: 978-0-7918-4359-8 | eISBN: 978-0-7918-3851-8
  • Copyright © 2009 by ASME


Recently, ceramics has been using widely as living body material. It is called “bioceramics”. Both strength and elasticity of a living body material need almost three times larger than that of elaborate bone. However, it is difficult to satisfy the condition. So bioceramics is inferior to an elaborate bone. The purpose of this research is to obtain a basic data for improving the mechanical characteristics of bioceramics by the Acoustic Emission (AE) method. It was discussed how average roughness depends on mechanical characteristic and AE parameter of bioceramics. The following results were obtained. The first, the bioceramics showed a positive correlation between sound velocity and Kurtosis, that is one of the important parameter for the surface roughness. The second, it was clarified that same relation was obtained between Kurtosis and such mechanical parameters as stress, Young’s modulus and hardness. The third, these results were in accordance with the theory of fracture mechanics for fine ceramics reported independently by Rice and Aoki.

Copyright © 2009 by ASME



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