Results 91 to 100 of about 1,075,659 (302)

Exploring Dynamic Spalling Behavior in Rock–Shotcrete Combinations: A Theoretical and Numerical Investigation

Mathematics
Spalling is a widespread dynamic disaster during blasting excavation in underground engineering. To clarify the coupled dynamic response and spalling behavior of an underground tunnel with a spray anchor, an investigation based on the rock–shotcrete ...
Lin Luo, Yichao Rui, Jiadong Qiu, Chongjin Li, Xiong Liu, Cong Chen   +5 more
doaj   +1 more source

Theoretical Analysis of Longitudinal Wave Attenuation in a Stressed Rock With Variable Cross-Section

Frontiers in Earth Science, 2019
In this work, the longitudinal wave propagation in stressed rock with variable cross-section is investigated analytically. Considered the stress-sensibility of dynamic elastic modulus and the viscosity of rock, a modified viscoelastic stress-strain ...
Wei Yuan, Jiefang Jin, Zhongqun Guo, Yue Wu   +3 more
doaj   +1 more source

Micropatterned Biphasic Printed Electrodes for High‐Fidelity on‐Skin Bioelectronics

Advanced Functional Materials, EarlyView.
Micropatterned biphasic printed electrodes achieve unprecedented skin conformity and low impedance by combining liquid‐metal droplets with microstructured 3D lattices. This scalable approach enables high‐fidelity detection of ECG, EMG, and EEG signals, including alpha rhythms from the forehead, with long‐term comfort and stability.
Manuel Reis Carneiro, Telmo Lopes, André F. Silva, Carmel Majidi, Mahmoud Tavakoli   +4 more
wiley   +1 more source

Stress field propagation characteristics of deep complex fault blocks based on digital speckle deformation simulation experiment

Shiyou shiyan dizhi
In the process of oilfield exploration and development, the study of crustal stress plays an extremely important role in understanding the patterns of deep oil and gas migration and accumulation, enhancing reservoir fracturing efficiency and assessing ...
Jianwei FENG, Chenxi ZHENG, Shuizhen LIU, Chongan ZHOU, Wenke WU, Zhiyang SHEN   +5 more
doaj   +1 more source

Prospects of Electric Field Control in Perpendicular Magnetic Tunnel Junctions and Emerging 2D Spintronics for Ultralow Energy Memory and Logic Devices

Advanced Functional Materials, EarlyView.
Electric control of magnetic tunnel junctions offers a path to drastically reduce the energy requirements of the device. Electric field control of magnetization can be realized in a multitude of ways. These mechanisms can be integrated into existing spintronic devices to further reduce the operational energy.
Will Echtenkamp, Brahmdutta Dixit, Yifei Yang, Deyuan Lyu, Thomas Peterson, Qi Jia, Yu‐Chia Chen, Jian‐Ping Wang   +7 more
wiley   +1 more source

System for measuring Reynolds in a turbulently flowing fluid [PDF]

, 1976
A system for measuring momentum flux in a turbulently flowing fluid includes: a sensing apparatus for dynamically sensing the mainstream and the cross velocity components of the fluid, a transducer operative to provide two electrical output signals ...
Cheng, D. Y.
core   +1 more source

Energy Momentum Pseudo-Tensor of Relic Gravitational Wave in Expanding Universe

, 2012
We study the energy-momentum pseudo-tensor of gravitational wave, and examine the one introduced by Landau-Lifshitz for a general gravitational field and the effective one recently used in literature. In short wavelength limit after Brill-Hartle average,
A. Papapetrou, A. Polnarev, A. Trautman, A. A. Starobinsky, C. Moller, C. W. Misner, Daiqin Su, L. Grishchuk, L. D. Landau, L. Grishchuk, M. M. Basko, S. Weinberg, Yang Zhang   +12 more
core   +1 more source

Feasibility of Residual Stress Nondestructive Estimation Using the Nonlinear Property of Critical Refraction Longitudinal Wave

Advances in Materials Science and Engineering, 2017
Residual stress has significant influence on the performance of mechanical components, and the nondestructive estimation of residual stress is always a difficult problem.
Yu-Hua Zhang, Xin-Xin Li, Xiang-Hong Wang, Zhen-Feng Huang, Han-Ling Mao, Han-Ying Mao   +5 more
doaj   +1 more source

Kinetic Insights into Precursor‐Assisted Soft Sphere Close Packing Revealed by In Situ GISAXS with Implications for Gas Sensing

Advanced Functional Materials, EarlyView.
The versatile precursor‐assisted soft sphere close packing during slot‐die coating is investigated with in situ X‐ray scattering. The soft crystallization pathways towards a close packing involve multistep structural transitions such as surface nucleation, in‐plane, and out‐of‐plane crystallization.
Guangjiu Pan, Wenhe Xie, Suzhe Liang, Ting Tian, Shanshan Yin, Lixing Li, Altantulga Buyan‐Arivjikh, Jinsheng Zhang, Thomas Baier, Zhuijun Xu, Matthias Schwartzkopf, Sarathlal Koyiloth Vayalil, Stephan V. Roth, Yonghui Deng, Peter Müller‐Buschbaum   +14 more
wiley   +1 more source

Ultrasonic evaluation of the strength of unidirectional graphite-polyimide composites [PDF]

An acoustic-ultrasonic method is described that was successful in ranking unidirectional graphite-polyimide composite specimens according to variations in interlaminar shear strength.
Bowles, K. J., Vary, A.
core   +1 more source