Results 121 to 130 of about 44,024 (283)

Semi‐analytical solution for the stability of deep vertical shaft considering time‐dependent rock‐structure interaction

Deep Underground Science and Engineering, EarlyView.
A novel cavity contraction solution and multilayer shaft wall model were developed to analyze deep shaft stability, considering rock viscosity, support structures, and water pressure, with successful validation through a Hulusu Coal Mine case study.
Bin Chen, Pinqiang Mo, Zhao Lu, Lianfei Kuang, Qiang Zhang, Abolfazl Eslami   +5 more
wiley   +1 more source

A Cross-Scale Study of Data-Driven Micro-to-Macro Mechanical Heterogeneity in Sandstone

Applied Sciences
Tight sandstone gas development is largely governed by mineral composition and micromechanical heterogeneity. This study proposes a cross-scale method integrating these two factors to characterize macroscopic sandstone heterogeneity.
Binwei Xia, Yulin Zhang, Xinqin Xu, Lei Wang, Rui Li, Xiong Zheng   +5 more
doaj   +1 more source

Microwave amplification with nanomechanical resonators

, 2011
Sensitive measurement of electrical signals is at the heart of modern science and technology. According to quantum mechanics, any detector or amplifier is required to add a certain amount of noise to the signal, equaling at best the energy of quantum ...
AA Clerk, AD O’Connell, AH Safavi-Naeini, AJ Leggett, B Yurke, C Genes, CA Regal, CH Metzger, CM Caves, D Rugar, DW Carr, F Marquardt, F. Massel, H. Saloniemi, HA Haus, I Wilson-Rae, J Sulkko, J.-M. Pirkkalainen, JD Teufel, JD Teufel, JP Raskin, M. A. Sillanpää, MA Castellanos-Beltran, MA Sillanpää, MJ Woolley, MO André, N Bergeal, O Arcizet, P. J. Hakonen, S Mancini, S Weis, S. U. Cho, T Rocheleau, T. T. Heikkilä, TJ Kippenberg, VB Braginsky, W Marshall   +36 more
core   +1 more source

Research progress and current status of dynamic wave propagation characteristics in rock mass: A review

Deep Underground Science and Engineering, EarlyView.
This review elucidates the velocity–dispersion–attenuation coupling mechanisms of wave propagation in rock masses, compares six representative models, and reveals how pressure, temperature, mineral composition, and anisotropy jointly control dynamic responses in complex geological media.
Jiajun Shu, Tao Li, Ruiqi Yuan, Yue Li, Bingni Wu, Bo Liu, Zhengding Deng, Galindo Rubén, Fausto Molina‐Gómez   +8 more
wiley   +1 more source

Characterization of the mechanical properties of the mouse Achilles tendon enthesis by microindentation. Effects of unloading and subsequent reloading

Bone Reports
The fibrocartilaginous tendon enthesis, i.e. the site where a tendon is attached to bone through a fibrocartilaginous tissue, is considered as a functionally graded interface.
Claire Camy, Tilman Grünewald, Edouard Lamy, Flavy Roseren, Mathieu Caumes, Théo Fovet, Thomas Brioche, Cecile Genovesio, Angèle Chopard, Martine Pithioux, Sandrine Roffino   +10 more
doaj   +1 more source

Active Stiffness Modulation of Flexible PDMS Elastomer by Embedding Shape Memory Alloy Wires: Fabrication and Modeling

FlexTech, EarlyView.
Active stiffness modulation is achieved in NiTi shape memory alloy‐reinforced PDMS and carbon fiber‐epoxy composites, with reversible 3‐fold modulus increase via Joule heating and validated predictive models, which resolves longstanding adaptive design challenges.
Xi Yi, Dongjie Jiang
wiley   +1 more source

Prediction of the longitudinal tensile strength of polymer matrix composites [PDF]

, 2006
A micromechanical model was developed for the prediction of the longitudinal tensile strength of polymer matrix composites. The model considers successive fibre breaks within an infinitely wide Li-long representative volume element (RVE), Li being the
Morais, A. B. de
core   +1 more source

Microelectromechanical system‐based devices for the diagnosis, treatment, and monitoring of ophthalmic diseases

Interdisciplinary Medicine, EarlyView.
Due to the characteristics of miniaturization, high sensing performance, integration, and high comfort, MEMS‐based devices were employed to design sensors, imaging systems, drug delivery systems, retinal prosthesis, surgical tools, and wearable products for the ophthalmic disease diagnosis, treatment, and monitoring.
Yaling Peng, Xiaoming Huang, Xueyuan Zhang, Yiling Jiang, Xin Zhang, Xueying Zeng, Fengyuan Sun, Peng Liu, Jin Zhou, Zewei Luo, Tong Wu   +10 more
wiley   +1 more source

Coherence‐Gated Mirau Interferometry for Single‐Shot Quantitative Phase Imaging and Motion Sensing

Laser &Photonics Reviews, EarlyView.
This paper presents a compact add‐on module converting a Mirau or other on‐axis interferometer into a single‐shot quantitative phase imaging system using coherence gating and precise optical path matching. Demonstrations include time‐resolved imaging of human cells and streaming red blood cells, visualization of evaporation dynamics in liquid mixtures,
Petr Bouchal, Martin Konečný, Zdeněk Nováček, Radim Chmelík, Zdeněk Bouchal   +4 more
wiley   +1 more source

A micromechanical model for light-interactive molecular crystals

Journal of the Mechanics and Physics of Solids
Molecular crystals respond to a light stimulus by bending, twisting, rolling, jumping, or other kinematic behaviors. These behaviors are known to be affected by, among others, the intensity of the incident light, the aspect ratios of crystal geometries, and the volume changes accompanying phase transformation. While these factors, individually, explain
Devesh Tiwari, Ananya Renuka Balakrishna
openaire   +2 more sources