Investigation of Porosity Dependence for Elastic Modulus of Sintered Irons

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概要

• 論文の詳細を見る

• The relationships among elastic modulus, sound velocity and porosity (P) were investigated by theoretical elastic model and experimental results obtained by acoustic pulse method. Youngs modulus (shear modulus) decreased with increasing P as (E<SUB>0</SUB>-K<SUB>E</SUB>⋅P)·(1-P), where K<SUB>E</SUB> and E<SUB>0</SUB> are experimental constants.<BR>The square of sound velocity was as a function of P. The calculated sound velocity using the relation corresponded to the measured sound velocity against P. Furthermore, it was clarified that elastic modulus against P can be calculated using the square of sound velocities at P=0 and two experimental constants.<BR>In these relations, the experimental constants of elastic modulus and sound velocity changed at critical porosity where pore morphology changes. When the critical porosity was considered to the fitting curve calculated using the equation derived in this study, good agreement with the fitting curve and measured data of Poisson′s ratio was obtained.

• 社団法人 粉体粉末冶金協会の論文
• 2001-01-15

著者

• Kohno Tohru

  College Of Science And Engineering Iwaki Meisei University

• ASAMI Junichi

  Tokyo Metropolitan Industrial Technology Center

• Asami J

  Tokyo Metropolitan Industrial Technol. Res. Inst. Tokyo

• Tanaka Shinichi

  Tokyo Metropolitan Tama Small And Medium-sized Business Promotion Center

• Hirose Norimitsu

  Tokyo Metropolitan College Of Aeronautical Engineering

• TANAKA Shin-ichi

  Tokyo Metropolitan Tama Small and Medium-sized Business Promotion Center

• Tanaka Shin-ichi

  Tokyo Metropolitan Industrial Technology Research Institute

• Tanaka Shin-ichi

  Tokyo Metropolitan Industrial Technology Research Insitute

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