Results 61 to 70 of about 283,331 (301)

Adaptive Hydrogels With Spatiotemporal Stiffening Using pH‐Modulating Enzymes

Advanced Functional Materials, EarlyView.
The chemomechanical coupling in an adaptive hydrogel is studied to further the development of adaptive hydrogels. This coupling is achieved by embedding a pH‐modulating enzyme in a pH‐responsive hydrogel. The enzymatic reaction can be triggered locally, which generates a pH‐decreasing wave throughout the system, increasing the crosslinking density and ...
Natascha Gray, Zoe Grämiger, André R. Studart, Rafael Libanori   +3 more
wiley   +1 more source

Study of the effect of specimen size and frequency on the structural damping property of beam

Mechanical Engineering Journal, 2016
It is said that the parameters that characterize structural damping, i.e., the loss factor, are identical to the material of the specimen, but in actuality, the damping property is sometimes affected by specimen size or the frequency.
Shozo KAWAMURA, Masato KITA, Masami MATSUBARA, Tomohiko ISE   +3 more
doaj   +1 more source

Halide‐Dependent Photoluminescence and Heavy‐Atom Effects in Low‐Melting Organic–Inorganic Manganese Halides

Advanced Functional Materials, EarlyView.
Two pyridinium‐based ionic liquid templated hybrid manganese halides, (C4Py)2[MnCl4] and (C4Py)2[MnBr4], display similar bulk structures but show significantly different photoluminescence behaviors due to the bromine heavy‐atom effect. Their stable local Mn environments remain intact even in the molten state, allowing applications such as luminescence ...
Biswajit Bhattacharyya, Christian Balischewski, Jiyong Kim, Tiago Duarte, Lianshe Fu, Rute A.S. Ferreira, Alkit Beqiraj, Iuliia Mikulska, Diego Gianolio, Eric Sperlich, Felix Stete, Wouter Koopman, Christina Günter, Katlen Brennenstuhl, Daniel Van Opdenbosch, Cordt Zollfrank, Armin Wedel, Beth J. Murray, Małgorzata Swadźba‐Kwaśny, Tillmann Klamroth, Michael U. Kumke, Verónica de Zea Bermudez, Andreas Taubert   +22 more
wiley   +1 more source

Decomposition of process damping ratios and verification of process damping model for chatter vibration [PDF]

Measurement, 2012
In the previous study, by the same authors, titled ‘‘A new process damping model (PDM) for chatter vibration (Measurement, 44 (8) (2011) 1342–1348)’’, a new approach has been presented for obtaining process damping ratios (PDRs). This PDM has been constituted on the basis of the shear angle ðuÞ oscillations of the cutting tool and the alteration of the
Turkes, Erol, Orak, Sezan, Neseli, Suleyman, Yaldiz, Suleyman   +3 more
openaire   +4 more sources

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

Studying The Feasibility Of Powder Composite For Mechanical Damping Purposes

Journal of Engineering and Sustainable Development, 2014
The present work is concerned with study some of the mechanical properties (Brinell hardness, Bending strength, Damping) for a metal matrix composite (Aluminum-powder).
Hassan H. Mahdi, Nasris M.Namer, Ahmed Kadhiam Jaliel   +2 more
doaj  

Cyclic shearing characteristics of calcareous sand-snake skin-inspired interfaces

Yantu gongcheng xuebao
In marine geotechnical engineering, the dynamic response of the calcareous sand-structure interfaces is critical to the overall stability of structures.
CUI Hao 1, 2 , LIU Hanlong 2, 3, XIAO Yang 2, 3
doaj   +1 more source

Material damping ratio from free-vibration method

Annals of Warsaw University of Life Sciences – SGGW. Land Reclamation, 2018
Abstract One important aspect of soil dynamics is attenuation or energy loses. This inherent dynamic property is essential in the analysis of soil behavior subjected to a dynamic load. Energy absorption in soils leads to the definition of an equivalent viscous damping ratio (D).
Katarzyna Gabryś, Emil Soból, Wojciech Sas, Alojzy Szymański   +3 more
openaire   +1 more source

A Non‐Reciprocal Architected Porous Medium

Advanced Functional Materials, EarlyView.
ABSTRACT In several fluid flow, energy‐dumping, and energy‐harvesting applications, a dominant flow direction or dominant resistance direction is desirable. In this study, we propose a simple modular geometry that doubles flow resistance in one direction relative to the opposite direction, while maintaining laminar viscous flow.
Clément Vezies, Pablo Zavattieri, Nicolás Silin   +2 more
wiley   +1 more source

滑动轴承结构参数对转子系统阻尼临界转速的影响

Jixie chuandong, 2008
Take three-fixing-lobe bearings,which are not concentric supporting elastic Effort rotor as the research subject.Based on considering the stiffness and damping characteristics of journal bearing,dynamic coefficients of journal bearing and damping ...
阎庆华, 安琦
doaj