Results 101 to 110 of about 154,328 (299)

Identification of Mechanical Properties of Fiber-Reinforced Composites [PDF]

open access: yesУчёные записки Казанского университета: Серия Физико-математические науки, 2015
Techniques are developed for identification of the mechanical properties of fiber-reinforced composites according to the results of tests on tension, compression, and bending. The case of nonlinear elastic material is considered.
R.A. Kayumov   +3 more
doaj  

Strain-controlled criticality governs the nonlinear mechanics of fibre networks

open access: yes, 2015
Disordered fibrous networks are ubiquitous in nature as major structural components of living cells and tissues. The mechanical stability of networks generally depends on the degree of connectivity: only when the average number of connections between ...
A Arrott   +37 more
core   +1 more source

Transistor‐Level Activation Functions via Two‐Gate Designs: From Analog Sigmoid and Gaussian Control to Real‐Time Hardware Demonstrations

open access: yesAdvanced Materials, EarlyView.
Screen gate‐based transistors are presented, enabling tunable analog sigmoid and Gaussian activations. The SA‐transistor improves MRI classification accuracy, while the GA‐transistor supports precise Gaussian kernel tuning for forecasting. Both functions are implemented in a single device, offering compact, energy‐efficient analog AI processing ...
Junhyung Cho   +9 more
wiley   +1 more source

A nonlinear dynamic hysteresis model and dynamic performance of the piezoelectric ring bending actuator

open access: yesAIP Advances
A piezoelectric ring-bending actuator with a piezoelectric ring bender as the core component has the merits of fast response, high control accuracy, high driving frequency, and compact size. Therefore, it has broad application prospects.
Yuesong Li, Bang Wang
doaj   +1 more source

Opportunities of Semiconducting Oxide Nanostructures as Advanced Luminescent Materials in Photonics

open access: yesAdvanced Materials, EarlyView.
The review discusses the challenges of wide and ultrawide bandgap semiconducting oxides as a suitable material platform for photonics. They offer great versatility in terms of tuning microstructure, native defects, doping, anisotropy, and micro‐ and nano‐structuring. The review focuses on their light emission, light‐confinement in optical cavities, and
Ana Cremades   +7 more
wiley   +1 more source

A homogenized bending shell theory for multiscale materials from $3D$ nonlinear elasticity

open access: yes, 2019
We derive homogenized bending shell theories starting from three dimensional nonlinear elasticity. The original three dimensional model contains three small parameters: the two homogenization scales $\varepsilon$ and $\varepsilon^2$ of the material ...
Hernández-Llanos, Pedro
core  

Meta-models of repeated dissipative joints for damping design phase [PDF]

open access: yes, 2014
Developing tools to predict dissipation in mechanical assemblies starting from the design process is a subject of increasing interest. Design phases imply numerous computations resulting from the use of families of models with varying properties ...
BALMES, Etienne, HAMMAMI, Chaima
core   +3 more sources

Porous Hybrid Soft Actuators From Liquid Crystal Networks and Lyotropic Chromonic Liquid Crystal Templated Hydrogels

open access: yesAdvanced Materials, EarlyView.
The graphic illustrates the design of a hybrid bilayer composed of a liquid crystal hydrogel (LCH) and a liquid crystal network (LCN). The figure highlights the magnetic alignment of the chromonic hydrogel and the thermal‐responsive actuation of the LCN along with the LCH when both layers are aligned or misaligned, enabling programmable, light‐driven ...
Ramón Santiago Herrera Restrepo   +13 more
wiley   +1 more source

Science‐Towards‐Technology Breakthrough in CO2 Electroreduction: Multiphysics, Multiscale, and Artificial Intelligence Insights

open access: yesAdvanced Materials, EarlyView.
Electrochemical CO2RR is a key technology for converting CO2 into chemicals, but there remains a gap between “laboratory science” and “engineering practice” in current research. This review establishes a multi‐scale research framework, encompassing atomic‐level characterization, microenvironment regulation, external field‐assisted optimization, and AI ...
Ping Hong   +3 more
wiley   +1 more source

Estimation and identification study for flexible vehicles [PDF]

open access: yes
Techniques are studied for the estimation of rigid body and bending states and the identification of model parameters associated with the single-axis attitude dynamics of a flexible vehicle.
Englar, T. S., Jr., Jazwinski, A. H.
core   +1 more source

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