Process zone and size effect in fracture testing of rock
โ Scribed by Fakhimi, Ali; Tarokh, Ali
- Book ID
- 121267214
- Publisher
- Elsevier Science
- Year
- 2013
- Tongue
- English
- Weight
- 623 KB
- Volume
- 60
- Category
- Article
- ISSN
- 1365-1609
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๐ SIMILAR VOLUMES
In this paper we review experimental and field observations of the process zone, 4, size dependence in concrete and rock and suggest that a valid K,, test for such materials may require impractically large specimen sizes. Direct application of linear elastic fracture mechanics (LEFM) to toughness te
Acoustic emission (AE) energy, instead of amplitude, associated with each of the event is used to estimate the fracture process zone (FPZ) size. A steep increase in the cumulative AE energy of the events with respect to time is correlated with the formation of FPZ. Based on the AE energy released du