Results 21 to 30 of about 1,265 (180)

A Simple Three-Dimensional Failure Criterion for Jointed Rock Masses under True Triaxial Compression

Advances in Civil Engineering, 2021
The joint configuration and the intermediate principal stress have a significant influence on the strength of rock masses in underground engineering. A simple three-dimensional failure criterion is developed in this study to predict the true triaxial ...
Yaohui Gao, Chunsheng Zhang, Zhaofeng Wang, Jun Chen   +3 more
doaj   +1 more source

Tensor compaction of porous rocks: theory and experimental verification

Записки Горного института, 2022
Compaction in sedimentary basins has been traditionally regarded as a one-dimensional process that ignores inelastic deformation in directions orthogonal to the active load.
Ivan A. Panteleev, Vladimir Lyakhovsky, Virginiya A. Mubassarova, Vladimir I. Karev, Nikolaj I. Shevtsov, Eyal Shalev   +5 more
doaj   +1 more source

EndoTac: An Endoscopic Camera‐Based Tactile Sensor with High Sensitivity for Minimally Invasive Surgery

Advanced Science, EarlyView.
EndoTac presents a trocar‐compatible endoscopic vision‐based tactile sensor that uses a convex mirror to enlarge side‐facing tactile coverage during minimally invasive vessel palpation. Distorted tactile images are unwarped and processed by a learning model to estimate vascular deformation, enabling sensitive, spatially distributed tactile perception ...
Yupeng Wang, Nicolas Raison, Xuyang Zhang, Aijia Yang, Lukas Lindenroth, Shan Luo   +5 more
wiley   +1 more source

Grain Boundary Structure Ordering via Electroshock Treatment Enhances Strength‐Ductility Synergy

Advanced Science, EarlyView.
Electroshock treatment triggers atomic rearrangement, transforming disordered grain boundaries into ordered states without inducing recrystallization. This grain boundary ordering effectively relieves strain concentration and strengthens boundaries, enabling a simultaneous improvement in both strength and ductility.
Jiancheng Chen, Feng Wang, Dongsheng Qian, Huiling Wang, Jinsong Wu, Mingwang Fu, Lin Hua   +6 more
wiley   +1 more source

A method to determine strength parameters by triaxial testing and 3D rock failure models

Journal of Rock Mechanics and Geotechnical Engineering
Estimating the strength parameters of a chosen rock failure criterion is crucial for rational stability analyses. However, the grid search algorithm applied to true triaxial test data presents challenges that hinder its widespread adoption.
Pengfei He, Zhigang Tao, Xulong Yao, Manchao He, Mostafa Sharifzadeh   +4 more
doaj   +1 more source

Preliminary Study on Post-Peak Behavior and Fracture Characteristics of Hard Rock Under True Triaxial Stress

Frontiers in Earth Science, 2022
The post-peak behavior and fracture characteristics of hard rock are correlated with the stability and bearing capacity of engineering rock mass. However, there are relatively few research studies on the post-peak mechanical behavior and fracture ...
Feng Zeng, Feng Zeng, Feng Zeng, Meiben Gao, Meiben Gao, Meiben Gao, Meiben Gao, Fujiang Chen, Fujiang Chen, Fujiang Chen, Yongyi Yang, Yongyi Yang, Yan Zhang   +12 more
doaj   +1 more source

A Two‐Stage Characterization Pipeline and Open‐Source Framework for Reproducible Tactile Sensing

Advanced Intelligent Systems, EarlyView.
The same soft tactile sensor returns different numbers when embodied in different robots. This is an Embodiment Gap that no shared framework currently captures transparently. A two‐stage characterization pipeline, paired with a FAIR open‐source digital datasheet, decouples intrinsic sensor behavior from embodiment effects and condenses cross‐laboratory
Matteo Lo Preti, Weng Buxiu, Petr Trunin, Muhammad Sunny Nazeer, Lucia Beccai, Perla Maiolino, Cecilia Laschi   +6 more
wiley   +1 more source

Modified true triaxial Hoek-Brown criterion considering intermediate principal stress effect

Meitan kexue jishu
In order to improve the Hoek-Brown strength criterion not considering the influence of intermediate principal stress on rock strength, the evolutions of rock strength were investigated according to the results of the rock true triaxial compression test ...
Yapeng LI, Xiaosuo WU, Qiang ZHANG, Binsong JIANG   +3 more
doaj   +1 more source

Effects of intermediate principal stress on creep closure of storage caverns in Maha Sarakham salt [PDF]

Songklanakarin Journal of Science and Technology (SJST), 2017
True triaxial creep tests are performed to determine the effects of the intermediate principal stress on the timedependent behavior of the Maha Sarakham salt.
Sarayuth Archeeploha, Supattra Khamrat, Kittitep Fuenkajorn   +2 more
doaj   +1 more source

Fracture evolution of a thick soft protection layer and the water inrush mechanism in overburden under longwall mining

Deep Underground Science and Engineering, EarlyView.
Through shear–tensile creep tests and viscoelastic modeling, the fracture evolution of thick soft protective layers is clarified. Results show thickness‐dependent rheological failure modes that govern four types of roof water inrush, providing a mechanism‐based framework for hazard prediction and control. Abstract In the Jurassic coal‐bearing strata of
Mengnan Liu, Wei Qiao, Xianggang Cheng, Xiangsheng Meng, Peichao Feng   +4 more
wiley   +1 more source