Estimation of Weibull modulus from coarser defect distribution in dry-pressed alumina ceramics

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概要

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• Strength variation of alumina ceramics formed by dry-pressing of granules was examined by the number density of coarser defects. The Weibull modulus m was related to the exponent n of the power function of the number density of coarser defects by strength simulation; m = 1.82n - 1.92. The Weibull modulus was determined by a series of strength data, which were calculated by the simulated bending tests of the samples. The number density of coarser defects was given by the assumed power function. The various Weibull moduli were obtained for some kinds of series. The experimental results of the number density of coarser defects by direct observation of alumina ceramics and the Weibull modulus from strength tests were plotted well on the calculated line except a series of sample containing coarser defects with ambiguous boundaries. The relationship between the Weibull modulus and the parameter of the power function concurred with past studies; m = 2n - 2.

• 公益社団法人 日本セラミックス協会の論文
• 2009-06-01

著者

• TANAKA Satoshi

  Department of Physical Science, Osaka Prefecture University

• 佐藤 和好

  大阪大学 接合科学研究所

• NAKAMURA Satoshi

  Department of Neurosurgery, Tokyo Women's Medical University

• Tanaka Satoshi

  Department Of Nutritional Sciences Faculty Of Nutritional Science Nakamura Gakuen University

• Sato Kazuyoshi

  Joining And Welding Research Institute

• UEMATSU Keizo

  Department of Chemistry, Nagaoka University of Technology

• 佐藤 和好

  大阪大 接合科研

• Uematsu K

  Dep. Of Materials Sci. And Technol. Nagaoka Univ. Of Technol.

• Uematsu Keizo

  Department Of Cardiology Hamamatsu Medical Cente

• FURUSHIMA Ryoichi

  Department of Materials Science and Technology, Nagaoka University of Technology

• Uematsu Keizo

  Dep. Of Materials Sci. And Technol. Nagaoka Univ. Of Technol.

• Nakamura Satoshi

  Department Of Botany Graduate School Of Science Kyoto University

• Tanaka Satoshi

  Department Of Anesthesia Nagano Municipal Hospital

• Nakamura Satoshi

  Department Of Bioengineering Tokyo Institute Of Technology

• Tanaka Satoshi

  Department Of Materials Science And Technology Nagaoka University Of Technology

• Nakamura Satoshi

  Department Of Appropriate Technology Development And Transfer Research Institute International Medical Center Of Japan

• Nakamura Satoshi

  Department Of Materials Science And Technology Nagaoka University Of Technology

• Nakamura Satoshi

  Department Of Acoustic And Speech Research Advance Telecommunications Research Institute International

• Tanaka Satoshi

  Department Of Agricultural Chemistry Faculty Of Agriculture Tottori University

• FURUSHIMA Ryoichi

  Department of Materials Science and Technology, Nagaoka University

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