Dynamic Tensile Mechanical Properties and Fracture Mechanism of Sandstone Exposed to Chemical Corrosion.
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| Title: | Dynamic Tensile Mechanical Properties and Fracture Mechanism of Sandstone Exposed to Chemical Corrosion. |
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| Authors: | He, Ben1 (AUTHOR), Shi, Ruilong1 (AUTHOR), Lv, Na1 (AUTHOR), Dai, Feng2 (AUTHOR), Liu, Yi2 (AUTHOR), Yan, Zelin2 (AUTHOR) yanzelin@scu.edu.cn |
| Source: | Fatigue & Fracture of Engineering Materials & Structures. Aug2025, Vol. 48 Issue 8, p3303-3317. 15p. |
| Subjects: | Digital image correlation, Scanning electron microscopes, Tensile tests, Digital photography, Alkaline solutions |
| Abstract: | Dynamic flattened Brazilian disc (FBD) tensile tests are conducted on chemical corrosion treated sandstone samples using the split Hopkinson pressure bar (SHPB). The effects of pH values, soaking time and loading rate on the physical properties, tensile strength, macro progressive failure behaviors, and micro failure characteristics of sandstone are comprehensively investigated. The results show that the chemical corrosion will continuously increase the porosity and decrease the P‐wave velocity of sandstone samples. The dynamic tensile strength of sandstone will increase with increasing loading rate, while it decreases with the increase of the soaking time by acidic or alkaline solutions. High‐speed photography and digital image correlation analysis show that the progressive failure behaviors of the FBD sample are controlled by the dynamic loading rate. In addition, we further discussed the microscopic tensile failure mechanism of the chemical corrosion treated sandstone by using X‐ray diffraction (XRD) and scanning electron microscope (SEM) techniques. [ABSTRACT FROM AUTHOR] |
| Copyright of Fatigue & Fracture of Engineering Materials & Structures is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) | |
| Database: | Engineering Source |
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| Abstract: | Dynamic flattened Brazilian disc (FBD) tensile tests are conducted on chemical corrosion treated sandstone samples using the split Hopkinson pressure bar (SHPB). The effects of pH values, soaking time and loading rate on the physical properties, tensile strength, macro progressive failure behaviors, and micro failure characteristics of sandstone are comprehensively investigated. The results show that the chemical corrosion will continuously increase the porosity and decrease the P‐wave velocity of sandstone samples. The dynamic tensile strength of sandstone will increase with increasing loading rate, while it decreases with the increase of the soaking time by acidic or alkaline solutions. High‐speed photography and digital image correlation analysis show that the progressive failure behaviors of the FBD sample are controlled by the dynamic loading rate. In addition, we further discussed the microscopic tensile failure mechanism of the chemical corrosion treated sandstone by using X‐ray diffraction (XRD) and scanning electron microscope (SEM) techniques. [ABSTRACT FROM AUTHOR] |
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| ISSN: | 8756758X |
| DOI: | 10.1111/ffe.14672 |
