Evaluation of Fracture Strength for Ceramics with Defects by Numerical Simulation: (2nd Report, Characteristics of R-Curve)

Kazuya Mori, Hiroshi Noguchi

研究成果: ジャーナルへの寄稿学術誌査読

抄録

The influence of pre-crack length on an R-curve for ceramics with bridging is investigated by numerical simulation. Generally a pre-crack is introduced into the specimen for measurement of the R-curve. However, it is considered that the R-curve is influenced by the pre-crack length because the bridging stress distribution depends on the pre-crack length. In this study, R-curves are obtained by numerical simulation. In the numerical simulation, we establish an algorithm to evaluate the R-curve based on bridging stress. This algorithm can be used to estimate the characteristics of bridging through a certain R-curve obtained experimentally. Based on the results, it is shown that the R-curve for ceramics with bridging depends on the pre-crack length and the specimen geometry.

本文言語英語
ページ(範囲)717-721
ページ数5
ジャーナルTransactions of the Japan Society of Mechanical Engineers Series A
61
584
DOI
出版ステータス出版済み - 1995

!!!All Science Journal Classification (ASJC) codes

  • 材料科学(全般)
  • 材料力学
  • 機械工学

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