Results 81 to 90 of about 654 (167)

Stability of highly inclined non-circular wellbores in isotropic formations

Geomechanics and Geophysics for Geo-Energy and Geo-Resources
The shear and tensile stabilities of highly inclined non-circular wellbores are investigated in this study. Using the equivalent-ellipse hypothesis, the non-circular geometry was approximated as an ellipse, and the corresponding stress concentration ...
Oluwafemi Oyedokun, Jerome Schubert
doaj   +1 more source

Mitigating surcharge‐induced column‐head cracking in double‐deck shield tunnels using hyperelastic bearing joints

Deep Underground Science and Engineering, EarlyView.
A staged three‐dimensional nonlinear soil–structure interaction (SSI) model is established, in which the initial geostress state, tunnel excavation, lining installation, delayed activation of the internal frame, and subsequent surcharge loading are simulated sequentially.
Xinyu Liu, Xiang Ci, Weizhong Chen, Jianping Yang   +3 more
wiley   +1 more source

Closed‐form stress solution and minimum safe burial depth correction for shallow‐buried large‐diameter energy storage chambers

Deep Underground Science and Engineering, EarlyView.
This study develops a closed‐form solution for stress analysis of shallow‐buried large‐diameter compressed air energy storage (CAES) chambers, explicitly incorporating free surface, lateral pressure, and gravity gradient effects. Validated against numerical simulations, the solution accurately captures stress redistribution and reveals upward migration
Zeyuan Sun, Cheng Zhao, Jinquan Xing
wiley   +1 more source

Modified rock stress factor for the Mathews stability graph method and its application

Geomatics, Natural Hazards & Risk
It is difficult to accurately predict and assess the instability of the stope. This article uses the improved Mathews stability graph method to scientifically analyse and evaluate the quality and stability of the surrounding rock. It utilizes the failure
Minsi Zhang, Heng Liu, Yong Yang, Jiong Wei, Wenhua Zha   +4 more
doaj   +1 more source

Nanoscale fracture mechanisms in defective α‐quartz induced by compression: Insights from molecular dynamics simulation

Deep Underground Science and Engineering, EarlyView.
Rock fracture can ultimately be traced to atomic bond breakage. Taking quartz as a representative mineral, this paper employs molecular dynamics to identify the crack initiation and propagation mechanisms for single‐hole cases, as well as crack coalescence modes between double holes under compression, providing a physical basis for multiscale modeling ...
Sheng Li, Hongchang Zhou, Yuhao Wu, Suifeng Wang, Jikai Sun   +4 more
wiley   +1 more source

Bioinspired Flexible and Stretchable Coil Structure from Ti3C2Tx MXene/AgNPs‐Functionalized Piezoelectric Nanofibers for Enhanced Energy Harvesting

ENERGY &ENVIRONMENTAL MATERIALS, EarlyView.
Ti3C2Tx MXene and Ag nanoparticles are embedded into piezoelectric nanofibers to form a stretchable, self‐powered coil that converts mechanical deformation into electrical energy. The device enables controllable power output during stretching and release while maintaining a compact and lightweight architecture, making it suitable for miniaturized ...
Fatemeh Mokhtari, Alexander Volodine, Olivier Deschaume, Carmen Bartic, Albert de Kogel, Xuehang Wang, Russell J. Varley   +6 more
wiley   +1 more source

Measurement of interlaminar shear properties of pultruded CFRP composites based on modified DNS specimens

Case Studies in Construction Materials
A double-notch shear (DNS) test was modified for a measurement of interlaminar shear properties of pultruded carbon-fibre-reinforced polymer (CFRP) composites under moderate through-thickness compressive stresses, which were applied by torqued bolts.
Yi-Feng Gao, Dong-Dong Zhang, Xiao-Qiang Yan, Fei Li, Tao Yang, Li-Gang Peng   +5 more
doaj   +1 more source

Enhancing Anode‐Free Lithium Metal Batteries: A Lightweight MPTS‐MXene Current Collector for Superior Performance and Energy Density

ENERGY &ENVIRONMENTAL MATERIALS, EarlyView.
This study introduces an MPTS‐modified MXene current collector for anode‐free lithium metal batteries (AFLMBs). A key advantage of MPTS‐MXene is its ultralight weight, only 15% as heavy as standard copper per unit volume. Its special layered structure and Si‐O rich surface help lithium deposit smoothly and flat, while forming a protective layer that ...
Jiawei Ren, Jiayi Zhang, Jingchao Zhang, Jianbo Li, Yonas Tsegaye Megra, Jianchuan Wang, Yong Du, Rong Huang, Yi Cui, Chenguang Liu, Li Yang   +10 more
wiley   +1 more source

Harnessing Thin‐Film Solid‐State Electrolytes: Enabling Breakthroughs in All‐Solid‐State Batteries

ENERGY &ENVIRONMENTAL MATERIALS, EarlyView.
Schematic illustration highlighting the advantages of transitioning from traditional thick solid‐state electrolytes (SSEs) to thin‐film SSEs. Thinning the electrolyte enables higher ionic conductivity, reduced interfacial polarization, improved flexibility, compact electrode contact, and enhanced energy density, offering a promising pathway toward high‐
Yitao He, Haoyang Cheng, Li Wang, Xiangming He   +3 more
wiley   +1 more source

Recent Progress of Metal Halide Perovskite‐Based S‐Scheme Heterojunction for Solar Energy Conversion

ENERGY &ENVIRONMENTAL MATERIALS, EarlyView.
Recent advances in metal halide perovskite‐based S‐scheme photocatalytic heterojunctions are systematically reviewed in this work. Synthetic protocols, state‐of‐the‐art characterizations for tracking interfacial charge transfer, and their diverse photocatalytic applications are thoroughly explored.
Xinhe Wu, Shujie Yin, Jiachao Xu, Lihong Tan, Guohong Wang   +4 more
wiley   +1 more source