Evaluation of mode I crack growth in rock

Kazushi Sato, Toshiyuki Hashida

研究成果: Article査読

1 被引用数 (Scopus)

抄録

This paper presents usefullness of the tension-softening model for an evaluation of Mode I fracture toughness in rocks. Rock fracture behavior is dominated by a fracture process zone. The fracture process zone in rock can be classfied into two types, such as planar fracture process zone and diffused microcrack zone. In this paper, the fracture process zone type for various rocks is examined based on microscopic strength distribution. The microscopic strength distribution is estimated from uniaxial tension test data using a statistical model of microcracking prior to damage localization. This examination demonstrates that the fracture process zone should be planar type in various rocks. Next, the fracture toughness of lidate granite is evaluated using the tension-softening model. The fracture toughness value is compared with toughness values evaluated by means of other methods. The comparison results indicates that the tension-softening model can be utilized in a wide range of fracture ploblems in rock.

本文言語English
ページ(範囲)894-899
ページ数6
ジャーナルZairyo/Journal of the Society of Materials Science, Japan
53
8
DOI
出版ステータスPublished - 2004 8月

ASJC Scopus subject areas

  • 材料科学(全般)
  • 凝縮系物理学
  • 材料力学
  • 機械工学

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