A resonance frequency technique to determine elastic modulus of hydroxyapatite

✍ Scribed by Torgalkar, Anil M.

• Book ID: 102873856
• Publisher: John Wiley and Sons
• Year: 1979
• Tongue: English
• Weight: 578 KB
• Volume: 13
• Category: Article
• ISSN: 0021-9304
• DOI: 10.1002/jbm.820130609

✦ Synopsis

Abstract

A resonance frequency technique was applied to determine the elastic modulus of hydroxyapatite. A Free—Free Vibration Transducer was designed to determine elastic modulus in a longitudinal direction. A Fixed—Free Vibration Transducer was also designed to study elastic modulus of materials where specimens longer than 3 cm in length were not available. Six lots of hydroxyapatite were prepared utilizing the same process. The elastic modulus of hydroxyapatite varied between 3.94 × 10^10^ (dyn/cm^2^) and 6.30 × 10^10^ (dyn/cm^2^) in a longitudinal direction. For the same six lots, it varied between 1.95 × 10^10^ (dyn/cm^2^) and 3.20 × 10^10^ (dyn/cm^2^) in a cross direction. The elastic modulus values of cortical bone from dog tibias, fibulas, and femurs were also determined.