Results 51 to 60 of about 221,137 (269)

Spatial Control of Light‐Responsive Proteins and Optogenetics Within Hydrogels via Volumetric Bioprinting

open access: yesAdvanced Materials, EarlyView.
Spatiotemporal control over cell behavior within bioprinted constructs remains a key challenge in biofabrication. Volumetric bioprinting using multi‐wavelength light sources permits to activate light‐sensitive intracellular proteins as well as optogenetic gene and protein expression circuits in bioprinted cells, in addition to enabling fast printing of
Davide Ribezzi   +14 more
wiley   +1 more source

Mistuning analysis of a detuned bladed-disk with geometrical nonlinearities

open access: yes, 2019
International audienceThis work concerns the nonlinear numerical analysis of mis-tuned blades for a rotating detuned bladed-disk structure with geometrical nonlinearities.
Capiez-Lernout, Evangéline   +3 more
core   +4 more sources

Study on vibration response characteristics of mistuned bladed disk (Mistuning phenomena of higher modes evaluated by vibratory stress)

open access: yesNihon Kikai Gakkai ronbunshu, 2017
Although bladed disks of turbomachinery are nominally designed to be cyclically symmetric (tuned system), the vibration characteristics of all blades on a disk are slightly different due to the manufacturing tolerance, the deviation of the material ...
Yasutomo KANEKO   +3 more
doaj   +1 more source

3D Nanorod‐Shaped Binder‐Free Ni1−xFexCo2O4 Anodes Demonstrate High Performance and Stable Operation Under Accelerated Stress Tests in Anion Exchange Membrane Water Electrolysis

open access: yesAdvanced Materials Interfaces, EarlyView.
3D shaping of Ni1‐xFexCo2O4 spinel electrocatalyst to form high aspect ratio nanorods, made of 25 nm grain size particles and directly grown on Nickel felt, is proposed to improve the performance of industrial catalysts based on group‐VIII transition‐metal oxides.
Ataollah Niyati, Ombretta Paladino
wiley   +1 more source

A Comparison between Two Reduction Strategies for Shrouded Bladed Disks

open access: yesApplied Sciences, 2018
Shrouded bladed disks exhibit a nonlinear dynamic behavior due to the contact interfaces at shrouds between neighboring blades. As a result, reduced order models (ROMs) are mandatory to compute the response levels during the design phase for high cycle ...
Alessandro Sommariva, Stefano Zucca
doaj   +1 more source

Vibration Parameters Estimation by Blade Tip-Timing in Mistuned Bladed Disks in Presence of Close Resonances

open access: yesApplied Sciences, 2020
The present paper is focused on the post processing of the data coming from the Blade Tip-Timing (BTT) sensors in the case where two very close peaks are present in the frequency response of the vibrating system.
Saeed Bornassi   +2 more
doaj   +1 more source

Analysis of the Mode Shapes of Kaplan Runners

open access: yesApplied Sciences, 2022
To prevent lifetime shortening and premature failure in turbine runners, it is of paramount importance to analyse and understand its dynamic response and determine the factors that affect it.
Greco Moraga   +4 more
doaj   +1 more source

Bladed disk vibration [PDF]

open access: yes, 1987
The objective was to better understand the vibratory response of bladed disk assemblies that occur in jet engines or turbopumps. Two basic problems were investigated: how friction affects flutter; and how friction, mistuning, and stage aerodynamics ...
Griffin, J. H.
core  

Modelling friction contacts in structural dynamics and its application to turbine bladed disks [PDF]

open access: yes, 2011
Non
ZUCCA, Stefano   +6 more
core   +1 more source

Photothermal Heat Spreading for Uniform Pixel Activation in NIR Laser‐Driven Thermochromic Liquid Crystal Displays

open access: yesAdvanced Materials Interfaces, EarlyView.
A pixelated full‐color display is driven by a 1064 nm near‐infrared laser without electrical wiring. A graphite photothermal layer converts light into heat, while an aluminum heat‐spreading layer redistributes it for uniform color within each pixel. Optimizing pixel size and spacing suppresses thermal crosstalk, enabling non‐contact reproduction of ...
Sang‐Mi Jeong   +4 more
wiley   +1 more source

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