Results 91 to 100 of about 2,767,341 (335)

Multi-layer rheological sliding joint in the foundation structures [PDF]

, 2013
Kluzné spáry jsou v praxi využívány pro zmírnění účinků smykových napětí v základové spáře. Tato napětí mohou mít svůj původ v podloží (vlivy poddolování) nebo mohou vznikat přímo v konstrukci (smršťování a dotvarování betonu, předpínání), přičemž ...
Janulíková, Martina, Stará, Marie
core  

Meniscus Pixel Printing for Contact‐Lens Vision Sensing and Robotic Control

Advanced Functional Materials, EarlyView.
A visual‐sensing contact lens is enabled by meniscus pixel printing (MPP), which rapidly patterns a 200 µm perovskite photodetector pixel in 1 s without masks, vacuum processing, or bulky equipment. A deep‐learning‐based super‐resolution reconstructs sparse on‐lens signals into 80 × 80 high‐resolution visual information, while AI‐driven eye‐tracking ...
Byung‐Hoon Gong, Dohyean Kim, Jiyun Jeong, Taekyeong Kim, Soon‐sung Kwon, Junyoung Seo, Il Jeon, Im Doo Jung   +7 more
wiley   +1 more source

Contact analysis and parameter optimization of wheel axle sliding bearings in variable gauge bogies

机车电传动, 2023
A study was conducted on the contact characteristics and parameter optimization of the wheel axle sliding bearings in 1 435/1 520 mm variable gauge bogies for high-speed trains.
PENG Yueyang, HUANG Zhihui, TANG Jiacheng, SONG Yangfa, DAI Xiaochao   +4 more
doaj  

Joint Elasticity Effect on the Failure Behaviours of Rock Masses using a Discrete Element Model

Energies, 2018
It is widely accepted that the mechanical properties and failure behaviours of a rock mass are largely dependent upon the geometrical and mechanical properties of discontinuities. The effect of joint elasticity on the failure behaviours of rock masses is
Yong Yuan, Changtai Zhou, Zhihe Wang, Jifang Du   +3 more
doaj   +1 more source

Tough Injectable Hydrogels Enabled by Integrating Rigid Homogeneous Framework With Flexible Chains

Advanced Functional Materials, EarlyView.
Tough injectable hydrogels are constructed by integrating a rigid, homogeneous hyaluronic acid framework with flexible long‐chain connectors. This framework–flexible structure simultaneously enhances network uniformity and promotes effective energy dissipation by enlarging plastic deformation zones under compression.
Rijian Song, Runqi Zhu, Cameron Milne, Melissa Johnson, Chunyu Zhao, Qiang Geng, Yinghao Li, Jing Lyu, Qiang Li, Sigen A, Wenxin Wang   +10 more
wiley   +1 more source

Flexible Structural Design for Side-Sliding Force Reduction for a Caterpillar Climbing Robot

International Journal of Advanced Robotic Systems, 2012
Due to sliding force arising from the closed chain mechanism among the adhering points of a climbing caterpillar robot (CCR), a sliding phenomenon will happen at the adhering points, e.g., the vacuum pads or claws holding the surface.
Weina Cui, Wei Wang, Longchao Zhao, Houxiang Zhang   +3 more
doaj   +1 more source

Multi‐Responsive Dendrimer‐Hyaluronic Acid Hydrogel With Lubricating and Immunoregulatory Functions for Synergistic Osteoarthritis Therapy

Advanced Functional Materials, EarlyView.
A hydrogel with dynamic cross‐links was formed by cross‐linking hyaluronic acid with curcumin‐preloaded, phenylboronic acid‐modified poly(amidoamine) dendrimers. This hydrogel exhibited excellent injectability and self‐healing ability, enabling controlled Cur release in response to low pH, high reactive oxygen species (ROS) generation, or mechanical ...
Junjie Liu, Mengsi Zhan, Haoyu Huang, Jianhong Wang, Cheng Ni, Xiaojun Zhou, Hannah Küttner, Cong Song, Xiangyang Shi, Andrij Pich   +9 more
wiley   +1 more source

Development of a truss joint for robotic assembly of space structures [PDF]

This report presents the results of a detailed study of mechanical fasteners which were designed to facilitate robotic assembly of structures. Design requirements for robotic structural assembly were developed, taking into account structural properties ...
Parma, George F.
core   +1 more source

Variable structure control for parabolic evolution equations

, 2005
In this paper it is considered a class of infinite-dimensional control systems in a variational setting. By using a Faedo-Galerkin method, a sequence of approximating finite dimensional controlled differential equations is defined.
Levaggi, Laura
core   +1 more source

Design Strategies and Emerging Applications of High‐Performance Flexible Piezoresistive Pressure Sensors

Advanced Functional Materials, EarlyView.
Flexible piezoresistive pressure sensors underpin wearable and soft electronics. This review links sensing physics, including contact resistance modulation, quantum tunneling and percolation, to unified materials/structure design. We highlight composite and graded architectures, interfacial/porous engineering, and microstructured 3D conductive networks
Feng Luo, Artur Ciesielski, Paolo Samorì   +2 more
wiley   +1 more source