Results 41 to 50 of about 32,671 (309)

Strength of Rock-Like Specimens with Pre-existing Cracks of Different Length and Width [PDF]

open access: yes, 2016
Discontinuities play a key role in the failure process of rock and rock mass. Small fractures can decrease the strength of rock while large-scaled joints can have a significant effect on the overall stability of rock mass (Eberhardt et al.
Yeung, Chong   +3 more
core   +1 more source

Influence of rock bolt reinforcement on shear behaviour of a nonpersistent joint plane

open access: yesScientific Reports
The impact of rock bolts on the mechanical behavior of nonpersistent joints, including the intricate interactions between the joints, rock bridges, and rock bolts, has received limited investigation despite their effectiveness in reinforcing rock mass ...
Hongyun Xue   +3 more
doaj   +1 more source

Uncertainty quantification based on symbolic regression and probabilistic programming and its application

open access: yesMachine Learning with Applications
The joint roughness coefficient (JRC) is critical to evaluate the strength and deformation behavior of joint rock mass in rock engineering. Various methods have been developed to estimate JRC value based on the statistical parameter of rock joints.
Yuyang Zhao, Hongbo Zhao
doaj   +1 more source

Collision‐Resilient Winged Drones Enabled by Tensegrity Structures

open access: yesAdvanced Robotics Research, EarlyView.
Based on structures of birds such as the woodpeck, this article presents the collision‐resilient aerial robot, SWIFT. SWIFT leverages tensegrity structures in the fuselage and wings which allow it to undergo large deformations in a crash, without sustaining damage. Experiments show that SWIFT can reduce impact forces by 70% over conventional structures.
Omar Aloui   +5 more
wiley   +1 more source

Shear mechanical properties and empirical formula of infilled rock joints

open access: yesYantu gongcheng xuebao
The investigation of the shear mechanical properties of infilled rock joints is of significant importance for the stability assessment of engineering rock formations.
GAO Fuzhou 1, ZHANG Junyun 1, LUO Xiaolong 1, ZHAI Kexiang 1, ZHANG Le 2, HUANG Rui 1, 2, WU Xiaofei 1
doaj   +1 more source

ESTIMATION OF ROCK JOINT TRACE LENGTH USING SUPPORT VECTOR MACHINE (SVM)

open access: yesRudarsko-geološko-naftni Zbornik, 2022
Jointed rock masses modeling needs the geometrical parameters of joints such as orientation, spacing, trace length, shape, and location. The rock joint trace length is one of the most critical design parameters in rock engineering and geotechnics.
Jamal Zadhesh, Abbas Majdi
doaj  

3D Printing of Soft Robotic Systems: Advances in Fabrication Strategies and Future Trends

open access: yesAdvanced Robotics Research, EarlyView.
Collectively, this review systematically examines 3D‐printed soft robotics, encompassing material selections, function integration, and manufacturing methodologies. Meanwhile, fabrication strategies are analyzed in order of increasing complexity, highlighting persistent challenges with proposed solutions.
Changjiang Liu   +5 more
wiley   +1 more source

Rock joint compliance tests for compression and shear loads

open access: yes, 1985
A series of compression and shear tests were conducted at large scale on joint surfaces in granite and slate specimens, with special equipment being used to isolate the deformations of the joints from those of the rock material.
Sun, Z.,   +2 more
core   +1 more source

Gait Analysis of Pak Biawak: A Necrobot Lizard Built using the Skeleton of an Asian Water Monitor (Varanus Salvator)

open access: yesAdvanced Robotics Research, EarlyView.
Pak Biawak, a necrobot, embodies an unusual fusion of biology and robotics. Designed to repurpose natural structures after death, it challenges conventional boundaries between nature and engineering. Its movements are precise yet unsettling, raising questions about sustainability, ethics, and the untapped potential of biointegrated machines.
Leo Foulds   +2 more
wiley   +1 more source

Identification and characterization of conserved lncRNAs in human and rat brain

open access: yesBMC Bioinformatics, 2017
Background Long noncoding RNAs (lncRNAs) are involved in diverse biological processes and play an essential role in various human diseases. The number of lncRNAs identified has increased rapidly in recent years owing to RNA sequencing (RNA-Seq ...
Dan Li, Mary Qu Yang
doaj   +1 more source

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