Results 71 to 80 of about 143,249 (287)

Transducers Across Scales and Frequencies: A System‐Level Framework for Multiphysics Integration and Co‐Design

Advanced Materials Technologies, EarlyView.
Transducers convert physical signals into electrical and optical representations, yet each mechanism is bounded by intrinsic trade‐offs across bandwidth, sensitivity, speed, and energy. This review maps transduction mechanisms across physical scale and frequency, showing how heterogeneous integration and multiphysics co‐design transform isolated ...
Aolei Xu, Mengyao Xiao, Zhouli Sui, Yinpeng Wang, Daoye Zheng, Yuxin Liu, Luwei Wang, Huajun Liu, Chengkuo Lee   +8 more
wiley   +1 more source

Numerical Investigation of Rock Breaking Mechanisms by High Pressure Water Jet

Procedia Engineering, 2015
AbstractMany factors and complexities are involved in breaking rock with a high-pressure water jet, which has made it difficult to explain the rock breaking internal mechanisms. This in turn has constrained the applications and development of water jet technology.
Chen, Hailong, Li, Zhaomin, Gao, Zhihan, Sun, Yuanyuan   +3 more
openaire   +1 more source

Research on the Hard-Rock Breaking Mechanism of Hydraulic Drilling Impact Tunneling [PDF]

Mathematical Problems in Engineering, 2015
In order to realize the rapid hard-rock tunneling in a safe, highly effective, and economic manner, the hydraulic drilling impact hard-rock tunneling (HDIHT) technology and method were introduced based on the theories of rock mechanics and hydraulic impact. The key parameters, including drilling radius and impact distance, were researched to reveal the
Risheng Long, Shaoni Sun, Zisheng Lian
openaire   +1 more source

Additive Manufacturing of Patient‐Specific Intracranial Aneurysm Cell Culture Models

Advanced Materials Technologies, EarlyView.
Patient‐specific intracranial aneurysm models were fabricated using chocolate moulding, 3D printed water‐soluble cores, and direct resin 3D printing. Moulding PDMS around sacrificial cores made of chocolate or 3D printed water‐soluble resin yielded accurate, expandable, and endothelializable models that outperformed resin‐based approaches.
Chloe M. de Nys, Jaimee‐Lee Wood, James I. Novak, Danilo Carluccio, Craig D. Winter, Ashley R. Murphy, Mark C. Allenby   +6 more
wiley   +1 more source

Mechanism and influencing factors of rock breaking and pore-forming by water jet in deep coal seam based on the MPM

Meitan xuebao
China has a wealth of abundant coalbed methane (CBM) resources at great depths. However, the low permeability of these deep coal seams coupled with the challenges posed by high-stress pressure environments, hampers efficient gas extraction.
Lei ZHOU, Yan PU, Yu PENG, Binwei XIA, Liulin FANG   +4 more
doaj   +1 more source

Experimental evidence of accelerated seismic release without critical failure in acoustic emissions of compressed nanoporous materials

, 2018
The total energy of acoustic emission (AE) events in externally stressed materials diverges when approaching macroscopic failure. Numerical and conceptual models explain this accelerated seismic release (ASR) as the approach to a critical point that ...
Baró, Jordi, Castillo, Pedro O., Dahmen, Karin A., Davidsen, Jörn, Nataf, Guillaume F., Planes, Antoni, Salje, Ekhard K. H., Vives, Eduard   +7 more
core   +1 more source

Laboratory studies of a high-strength roof bolting by means of self-extending mixtures [PDF]

, 2019
Purpose is to analyze parameters of a new method to fasten roof bolts with the help of nonadhesive mixtures extending while hardening along with the development of high expansion pressures. Methods.
Isaienkov, O, Kurdiumow, D, Sakhno, I, Sakhno, S   +3 more
core   +1 more source

Collision‐Resilient Winged Drones Enabled by Tensegrity Structures

Advanced 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, Raphael Zufferey, William Stewart, Mohammad Askari, Simon Jeger, Dario Floreano   +5 more
wiley   +1 more source

Plasma-Assisted TBM Cutting Mechanism for Rock Breaking

In the process of tunnel excavation, rocks with great hardness and abrasion are often encountered, which leads to low rock breaking efficiency and serious tool wear. In order to solve this problem, a new TBM cutting mechanism is proposed in this paper. The cutter head is equipped with a plasma torch and a shield cutter.
Wei, Hongxin, Gao, Kuidong, Jiang, Acan, Chen, Hong   +3 more
openaire   +1 more source

Grip and Grasp: Lizard Claw Inspired Robotic Manipulators

Advanced Robotics Research, EarlyView.
Our study identifies the most effective lizard claw shape for use as an end effector in a bioinspired robotic manipulator. By examining key geometric features and combining them into comparative indices, the Crotaphytus collaris claw is found to be the best fit.
Hyeon Lee, Kate Douglas, Asyiah Bray, Andrea Rummel, Parvez Alam   +4 more
wiley   +1 more source