Experimental studies on crack propagation behaviors of rock materials under dynamic loads: a review

GAO Weiting; ZHU Zheming; ZHU Wei; ZOU Ming

doi:10.11883/bzycj-2022-0526

Volume 43 Issue 8

Aug. 2023

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GAO Weiting, ZHU Zheming, ZHU Wei, ZOU Ming. Experimental studies on crack propagation behaviors of rock materials under dynamic loads: a review[J]. Explosion And Shock Waves, 2023, 43(8): 081101. doi: 10.11883/bzycj-2022-0526

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GAO Weiting, ZHU Zheming, ZHU Wei, ZOU Ming. Experimental studies on crack propagation behaviors of rock materials under dynamic loads: a review[J]. Explosion And Shock Waves, 2023, 43(8): 081101. doi: 10.11883/bzycj-2022-0526

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Experimental studies on crack propagation behaviors of rock materials under dynamic loads: a review

doi: 10.11883/bzycj-2022-0526

MOE Key Laboratory of Deep Underground Science and Engineering, College of Architecture and Environment, Sichuan University, Chengdu 610065, Sichuan, China

Received Date: 2022-11-20
Rev Recd Date: 2023-04-07

Available Online: 2023-05-05

Publish Date: 2023-08-31

Abstract

Abstract

Dynamic fracture behavior is a crucial aspect in rock mechanics and engineering, with significant implications to the safety and effectiveness of structures in fields such as mining and civil engineering. In recent years, significant progress has been made in the study of dynamic crack propagation in rock materials, and the aim of this study is to provide a comprehensive review and summary on the latest achievements in testing techniques, experimental facility, and experimental methods. Various measurement techniques have been developed for dynamic rock crack propagation testing, including X-ray computed tomography, caustics method, digital image correlation method, crack propagation gauge, conductive carbon film test method and acoustic emission. Each of these techniques has advantages and limitations, and the selection of the appropriate technique depends on the specific experimental requirements and constraints. The dynamic fracture behavior in rock under different strain rates has been studied extensively by numerous researchers. The strain rate is a crucial parameter that determines the deformation and failure mechanisms of rocks under dynamic load. The dynamic fracture properties in rock under middle and low strain rates, high strain rates, and ultra-high strain rates have been systematically summarized. The experimental methods used for dynamic fracture testing include the drop-hammer impact device, split Hopkinson pressure bar system, and explosion tests. The failure properties of crack initiation, propagation, arrest behaviors, and dynamic fracture toughness of rocks under different strain rates have been investigated. In conclusion, the study of dynamic crack propagation in rock is a challenging and important field of research in rock mechanics and rock engineering. The development of new experimental techniques and methods has been enabling researchers to gain a deeper understanding of the complex behavior of cracks in rock under dynamic loads. The findings of these studies have important implications for the design of safe and reliable structures in various fields of practical engineering.
- rock material,
- strain rate,
- dynamic test,
- dynamic loading,
- crack propagation,
- dynamic fracture toughness

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References

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