- Title
- Low amplitude fatigue performance of sandstone, marble, and granite under high static stress
- Creator
- Du, Kun; Su, Rui; Zhou, Jian; Wang, Shaofeng; Khandelwal, Manoj
- Date
- 2021
- Type
- Text; Journal article
- Identifier
- http://researchonline.federation.edu.au/vital/access/HandleResolver/1959.17/178539
- Identifier
- vital:15427
- Identifier
-
https://doi.org/10.1007/s40948-021-00266-1
- Identifier
- ISBN:2363-8419 (ISSN)
- Abstract
- Abstract: Fatigue tests under high static pre-stress loads can provide meaningful results to better understand the time-dependent failure characteristics of rock and rock-like materials. However, fatigue tests under high static pre-stress loads are rarely reported in previous literature. In this study, the rock specimens were loaded with a high static pre-stress representing 70% and 80% of the uniaxial compressive strength (UCS), and cyclic fatigue loads with a low amplitude (i.e., 5%, 7.5% and 10% of the UCS) were applied. The results demonstrate that the fatigue life decreased as the static pre-stress level or amplitude of fatigue loads increased for different rock types. The high static pre-stress affected the fatigue life greatly when the static pre-stress was larger than the damage stress of rocks in uniaxial compression tests. The accumulative fatigue damage exhibited three stages during the fatigue failure process, i.e., crack initiation, uniform velocity, and acceleration, and the fatigue modulus showed an “S-type” change trend. The lateral and volumetric strains had a much higher sensitivity to the cyclic loading and could be used to predict fatigue failure characteristics. It was observed that volumetric strain εv = 0 is a threshold for microcracks coalescence and is an important value for estimating the fatigue life. Article highlights: Fatigue mechanical performance of high static pre-stressed rocks were evaluated.The results demonstrate that the fatigue life decreased as the static pre-stress level increased and the static pre-stress affected the fatigue life more than the amplitude of fatigue loads.The volumetric strain of zero before fatigue loading is a threshold for fatigue failure of rocks under high static stress. © 2021, The Author(s), under exclusive licence to Springer Nature Switzerland AG. **Please note that there are multiple authors for this article therefore only the name of the first 5 including Federation University Australia affiliate “Manoj Khandelwal” is provided in this record**
- Publisher
- Springer Science and Business Media Deutschland GmbH
- Relation
- Geomechanics and Geophysics for Geo-Energy and Geo-Resources Vol. 7, no. 3 (2021), p.
- Rights
- All metadata describing materials held in, or linked to, the repository is freely available under a CC0 licence
- Rights
- Copyright © 2021, The Author(s), Springer Nature Switzerland AG.
- Rights
- Open Access
- Subject
- 0905 Civil Engineering; 0404 Geophysics; Fatigue loading; High static pre-stress; Low amplitude; Mechanical properties
- Full Text
- Reviewed
- Funder
- This paper was supported by the National Natural Science Foundation of China (Grant Nos. 51774326, 11772357 and 41807259), as well as by the Open Fund of Mining Disaster Prevention and Control Ministry Key Laboratory at Shandong University of Science and Technology (Grant No. MDPC201917).
- Hits: 1525
- Visitors: 1558
- Downloads: 121
| Thumbnail | File | Description | Size | Format | |||
|---|---|---|---|---|---|---|---|
| View Details Download | SOURCE2 | Accepted version | 309 KB | Adobe Acrobat PDF | View Details Download |