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- Title
Application of Felicity Effect in Crack Stress Identification and Quantitative Damage Assessment of Limestone.
- Authors
Tian, Yong; Yu, Rangang; Zhang, Yin
- Abstract
The crack stress thresholds obtained from the stress-strain relationship and the corresponding damage parameter I D i obtained from the normalized AE energy method of the tested three limestone specimens are summarized in Table 1. Although the crack initiation stress determined by the stress-strain relationship is a specific value, the identification of the deviation from zero point on the crack volumetric strain curve depends on subjective judgment. Changing Law of FR with Accumulation of Rock Damage When the stress experienced by the rock exceeds the crack initiation stress, the rock deformation cannot completely recover and the rock damage continuously accumulates. 6 Variation of FR and D with regard to normalized axial stress (the stress value corresponding to FR is the peak stress of the previous cyclic loading) As shown in Fig.
- Subjects
ACOUSTIC emission; ROCK deformation; LIMESTONE; MATERIALS; STATISTICAL energy analysis; RADIOACTIVE waste disposal; ACOUSTIC emission testing
- Publication
Rock Mechanics & Rock Engineering, 2020, Vol 53, Issue 6, p2907
- ISSN
0723-2632
- Publication type
Article
- DOI
10.1007/s00603-020-02062-x