Identification of mixed mode damage types on rock-concrete interface under cyclic loading

Guo, Yuzhu; Chen, Xudong; Wang, Zhen; Ning, Yingjie; Bai, Lihui

doi:10.1016/j.ijfatigue.2022.107273

Cited by 25 publications

(6 citation statements)

References 48 publications

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“…This phenomenon is a sign of fracture mode transition. The results of this study are in general agreement with the findings of Zhou [34] and Guo et al [37].…”

Section: Energy Absorption Analysissupporting

confidence: 93%

“…This phenomenon is a sign of fracture mode transition. The results of this study are in general agreement with the findings of Zhou [34] and Guo [37] et al Figure 15 shows the energy density and energy dissipation rate of the mortar-rock specimens for different interface shapes. The energy dissipation increases by 3.6%, 33.6%, and 46.3% when the interface shape is rounded, serrated, and multiserrated compared with the linear shape, and the energy dissipation rates increase by 4.3%, 25.7%, and 33.5%, respectively.…”

Section: Energy Absorption Analysissupporting

confidence: 91%

“…Wang et al [36] studied the failure patterns and shear strength of brittle materials containing double-filled flaws under biaxial and triaxial compression. Several authors have used a combination of experimental and numerical calculations to determine the tensile strength of mortar-rock bimaterial specimens [37][38][39][40]. Several scholars have used different nondestructive testing tools to probe the fracture resistance of materials, such as DIC, acoustic emission, and laser scanning.…”

Section: Introductionmentioning

confidence: 99%

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Experimental Study on the Dynamic Fracture Characteristics of Mortar–Rock Interface Zones with Different Interface Inclinations and Shapes

Dong

Jiang

et al. 2023

Materials

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There has been little research on the impact resistance of mortar–rock slope protection structures. To ensure that the mortar–rock interface has good adhesion properties under the action of impact loading, in this paper, based on fracture mechanics theory, a theoretical impact model was established for mortar–rock binary material. Dynamic fracture tests were carried out on mortar–rock interfaces using the split-Hopkinson pressure bar (SHPB) system. The Brazilian disc (CSTBD) specimen was prepared with one half in granite and the other half in mortar. The specimen used for the dynamic impact test was 48 mm in diameter and 25 mm thick. The effects caused by the change in interface inclination and interface shape on the dynamic fracture mode were discussed. The dynamic model parameters were obtained for different inclination angles and interfaces. The results show that both the interface inclination and interface shape have significant effects on the dynamic mechanical properties of the mortar–rock binary material. The fracture modes of the mortar–rock specimens can be classified into three types. When the interface inclination is 0°, the specimen shows shear damage with an interface fracture; when the interface inclination is in the range of 0–90°, the dynamic splitting strength of the mortar–rock material increases with increasing interface inclination, and the interface undergoes composite fracture; and when the interface inclination is 90°, the dynamic splitting strength of the specimen reaches its peak, and the interface undergoes tensile fracture. The mortar–rock interface damage follows the M-C criterion. The roughness of the interface shape has a large influence on the dynamic splitting strength of the specimens. The rougher the interface shape, the higher the interface cleavage strength and the higher the peak load that causes the material to damage. The results of this study can provide a reference for the design of mortar–rubble structures to meet the demand for impact resistance and have strong engineering application value.

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“…This phenomenon is a sign of fracture mode transition. The results of this study are in general agreement with the findings of Zhou [34] and Guo et al [37].…”

Section: Energy Absorption Analysissupporting

confidence: 93%

Section: Energy Absorption Analysissupporting

confidence: 91%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Experimental Study on the Dynamic Fracture Characteristics of Mortar–Rock Interface Zones with Different Interface Inclinations and Shapes

Dong

Jiang

et al. 2023

Materials

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“…This avalanche-like process at stages 3-4 is indirectly confirmed by the increase in acoustic emission intensity [30]. At this stage, in the fracture process zone (FPZ) [24,40,41], the volume of damaged particles increases, due to which the wood structure (as a structure [4]) degrades and at the finish of stages 3-4 is transformed into a mixture of individual particles weakly connected, which is already typical for loose materials.…”

Section: Load-displacement Curve In Compression Tests Of Wood Along T...mentioning

confidence: 73%

Differential Energy Criterion of Brittle Fracture as a Criterion for Wood’s Transition to the Plastic Deformation Stage

2023

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An experimental study and modeling of the behavior of wood during compression along the fibers was carried out. The nonlinear analytical dependence of the load on the strain was considered. Attention was focused on the post-peak stage of deformation in order to determine the load and displacement at which the transition to the stage of plastic deformation occurs. The work was aimed at substantiating the application of the energy criterion of brittle fracture as a criterion for the transition to the stage of plastic deformation. To achieve this goal, methods of mathematical modeling and analysis of test results were used. As an upshot, a simple and practical procedure was developed to predict the transition point to the above stage of plastic deformation. The simulation results were consistent with laboratory tests of samples and fragments of structures. The practical significance of this criterion lies in its possible use as an additional tool for analyzing the condition of some wooden structures. Energy criteria, including the one mentioned above, belong to fairly universal criteria. Accordingly, the research methodology can be adapted to analyze the behavior of, for example, composites under other types of loads in further studies.

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“…Normal stress is a key external factor affecting the peak shear strength of a structural plane. With the increase of normal stress, the interface will appear scratches or local extrusion failure [24][25][26][27][28][29]. When the normal stress increases to a certain extent, the failure state of the interface will gradually transition from the relative slip along the surface to the large-scale nibbling failure.…”

Section: Introductionmentioning

confidence: 99%

Effects of Normal Stress on Shear Properties and Acoustic Emission Characteristics of Bonded Rock-Concrete Interfaces

Chen,

Yang,

Hou

et al. 2024

Preprint

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Laboratory direct shear and acoustic emission tests are conducted on standard cylinder specimens with varying levels of normal stress. The aim is to gain a better understanding of shear behavior and failure mechanisms of the bonded interface. The results show that increasing of normal stress enhances the brittleness of the specimens. In addition, the test shows that the failure degree of specimens increases with the different normal stresses. The test results show that high amplitude AE peak energy and count generation occur when the specimens reach the peak shear stress. Meanwhile, with the increase of normal stress, the cumulative acoustic emission energy before peak stress increases slightly, but the cumulative acoustic emission count before peak stress decreases. AE b-value proves to be an effective parameter for reflecting the crack size and main crack surface of rock-concrete specimens. The fluctuation value of the AE-b value is influenced by the normal stress.

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Identification of mixed mode damage types on rock-concrete interface under cyclic loading

Cited by 25 publications

References 48 publications

Experimental Study on the Dynamic Fracture Characteristics of Mortar–Rock Interface Zones with Different Interface Inclinations and Shapes

Experimental Study on the Dynamic Fracture Characteristics of Mortar–Rock Interface Zones with Different Interface Inclinations and Shapes

Differential Energy Criterion of Brittle Fracture as a Criterion for Wood’s Transition to the Plastic Deformation Stage

Effects of Normal Stress on Shear Properties and Acoustic Emission Characteristics of Bonded Rock-Concrete Interfaces

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