Effects of Thermal and Stress Cycles on the Mechanical Properties and Acoustic Emission Characteristics of Rocks DOI Creative Commons
Xianwei Meng,

Xinran Zhang,

Mingbo Chi

et al.

Lithosphere, Journal Year: 2024, Volume and Issue: 2024(4)

Published: Dec. 17, 2024

Abstract The surrounding rock of underground chamber is frequently affected by disturbance load and circulating temperature; it meaningful to study the mechanical properties under these conditions for construction a safe effective chamber. This investigates properties, failure modes, acoustic emission (AE) characteristics basalt sandstone various pretreatments, including water saturation pretreatment (rock samples [SR]), subjected cyclic temperature (SR-CTT), loading (SR-CLT), combined (SR-CTT-CLT). A series uniaxial compression tests (UCTs) were conducted analyze how pretreatments affect sandstone. These two kinds exhibit distinct SR-CLT SR-CTT-CLT make change from inclined shear X-shaped shear, while makes turn into splitting. AE data reveal that generally exhibits lower counts than sandstone, with highest observed SR-CTT-CLT. Energy analysis indicates accumulates more total energy (Et) elastic (Ee) compared different affecting dissipation (Ed) damage severity differently in each type. findings contribute understanding complex interactions between methods behavior engineering applications.

Language: Английский

Fatigue fracture and energy evolution characteristics of sandstone under water–ice phase transitions via the discrete element method DOI

Z. P. Zheng,

Zhanming Shi, Mengxiang Wang

et al.

Computers and Geotechnics, Journal Year: 2025, Volume and Issue: 179, P. 107023 - 107023

Published: Jan. 9, 2025

Language: Английский

Citations

4
Fatigue-thermal damage characteristics of red sandstone with a hole under high-temperature cyclic loading coupling and microstructural degradation DOI Creative Commons

Zeyue Wang,

Hang Lin, Chaoyi Yang

et al.

Journal of Materials Research and Technology, Journal Year: 2024, Volume and Issue: 33, P. 3250 - 3263

Published: Oct. 9, 2024

Language: Английский

Citations

5
Sulfate resistance of UHPC during dry-wet cycling and energy dissipation under compression DOI
Shun Yang, Yuan Qin, Jialiang Kou

et al.

Journal of Building Engineering, Journal Year: 2024, Volume and Issue: 95, P. 110149 - 110149

Published: July 6, 2024

Language: Английский

Citations

4
Dynamic impact mechanical properties of red sandstone based on digital image correlation method DOI
Jian Gong, Minghang He, Jiaxuan Zhang

et al.

International Journal of Mining Reclamation and Environment, Journal Year: 2024, Volume and Issue: unknown, P. 1 - 16

Published: Aug. 2, 2024

In the process of underground blasting excavation, safety and stability rock mass are significantly influenced by dynamic load. To study full-field strain displacement behaviour materials subjected to compressive force, impact tests were done on red sandstone specimens using an electromagnetically driven Hopkinson pressure bar. At same time, data collected a high-speed camera, non-contact measurements carried out with digital image correlation method. The resulting images screened analysed, based which stress-strain curve, cloud diagram obtained. Results show that peak stress increases increase velocity. During process, substantial internal uneven deformation occurs in close transmission bar's end face. Under load, cracks initiate from upper lower sides near face, followed formation middle part. These expand throughout form through-cracks, eventually complete failure. For materials, evolution their field during failure can reflect initiation propagation cracks. Therefore, use method proves effective for studying mechanisms rock. conclusions obtained this provide valuable reference macro-meso geotechnical materials.

Language: Английский

Citations

4
Experimental investigation of freeze-thaw environmental effect on fatigue life of CFRP composites DOI Creative Commons
Jeong Hwan Kim,

Dongwon Ha,

Min-Sung Kim

et al.

Polymer Testing, Journal Year: 2025, Volume and Issue: unknown, P. 108702 - 108702

Published: Jan. 1, 2025

Language: Английский

Citations

0
Sulfate durability and energy evolution of high ductility concrete under long-term sulfate immersion in low temperature environment DOI
Yue Qi, Yuan Qin, Jialiang Kou

et al.

Journal of Building Engineering, Journal Year: 2025, Volume and Issue: unknown, P. 112548 - 112548

Published: April 1, 2025

Language: Английский

Citations

0
Energy evolution law and catastrophic failure prediction of Luohe formation sandstone during rupture process experienced one freeze-thaw cycle DOI Creative Commons
Liang Zhang,

Jianxi Ren,

Mengchen Yun

et al.

PLoS ONE, Journal Year: 2025, Volume and Issue: 20(5), P. e0321656 - e0321656

Published: May 8, 2025

To explore the energy damage evolution law and catastrophic failure characteristics of sandstone in Luohe Formation after thawing, uniaxial compression tests on one freeze-thaw cycle with different freezing temperatures were conducted. The mechanical properties mode thawed analyzed. Furthermore, its sensitivity to temperature during deformation investigated. Subsequently, a model was proposed predict time Formation. results showed that peak strength elastic modulus decrease temperature. modes can be classified into axial splitting failure, shear tensile-shear mixed failure. Additionally, temperature, strain release rate dissipation growth rock samples decrease. Energy process thawing is divided stages minor damage, deceleration steadily increase, accelerated sharply increase. presents clear critical power-law singularity behavior, characteristic value β roughly 0.7±0.1. prediction method yields imminent ( t f p =4.356 min) very close actual =4.376 at -10 °C, are good stable.

Language: Английский

Citations

0
Physics-informed Gaussian process regression model for predicting the fatigue life of welded joints DOI
Dukyong Kim, Dong-Yoon Kim, Taehwan Ko

et al.

International Journal of Fatigue, Journal Year: 2024, Volume and Issue: 190, P. 108644 - 108644

Published: Oct. 10, 2024

Language: Английский

Citations

1
Experimental Investigation of Freeze-Thaw Environmental Effect on Fatigue Life of Cfrp Composites DOI
Jeong Hwan Kim,

Dongwon Ha,

Min-Sung Kim

et al.

Published: Jan. 1, 2024

Language: Английский

Citations

0
Effects of Thermal and Stress Cycles on the Mechanical Properties and Acoustic Emission Characteristics of Rocks DOI Creative Commons
Xianwei Meng,

Xinran Zhang,

Mingbo Chi

et al.

Lithosphere, Journal Year: 2024, Volume and Issue: 2024(4)

Published: Dec. 17, 2024

Abstract The surrounding rock of underground chamber is frequently affected by disturbance load and circulating temperature; it meaningful to study the mechanical properties under these conditions for construction a safe effective chamber. This investigates properties, failure modes, acoustic emission (AE) characteristics basalt sandstone various pretreatments, including water saturation pretreatment (rock samples [SR]), subjected cyclic temperature (SR-CTT), loading (SR-CLT), combined (SR-CTT-CLT). A series uniaxial compression tests (UCTs) were conducted analyze how pretreatments affect sandstone. These two kinds exhibit distinct SR-CLT SR-CTT-CLT make change from inclined shear X-shaped shear, while makes turn into splitting. AE data reveal that generally exhibits lower counts than sandstone, with highest observed SR-CTT-CLT. Energy analysis indicates accumulates more total energy (Et) elastic (Ee) compared different affecting dissipation (Ed) damage severity differently in each type. findings contribute understanding complex interactions between methods behavior engineering applications.

Language: Английский

Citations

0