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

Kazuya Mori, Hiroshi Noguchi

Research output: Contribution to journalArticlepeer-review

Abstract

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.

Original languageEnglish
Pages (from-to)717-721
Number of pages5
JournalTransactions of the Japan Society of Mechanical Engineers Series A
Volume61
Issue number584
DOIs
Publication statusPublished - 1995

All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Mechanics of Materials
  • Mechanical Engineering

Fingerprint Dive into the research topics of 'Evaluation of Fracture Strength for Ceramics with Defects by Numerical Simulation: (2nd Report, Characteristics of R-Curve)'. Together they form a unique fingerprint.

Cite this