粒子分散強化複合材料のヤング率迅速測定法
The Quick Measuring Method of Young's Modulus of Particle Reinforced Composites
石橋達弥・蒲沢英喜・吉田秀敏・手塚孝治
Ishibashi, Tatsuya / Gawasawa, Hideki / Yoshida, Hidetoshi / Tezuka, Koji
The purpose of this paper is to describe a ball indentation test which can be used as a quick and easy method to measure of the Young's modulus of particle reinforced composites. First, the contact equations between a ball indenter and the specimen surface were studied using on Hertz's elastic contact theory. Second, the center's displacements of an indenting ball were carefully observed and an equation for calculating Young's modulus was obtained. Finally, good agreement was obtained between Young's moduli determined by uniaxial compression tests and ball indentation tests for four types of particle reinforced composites.
Key words: Composites / Young's modulus / Ball indentation / Hertz's contact