Results 41 to 50 of about 2,484,320 (270)

Passive-dynamic wind tunnel tests of the Ø resund Bridge cables [PDF]

, 2012
Large amplitude vibrations have been reported from the Ø resund Bridge especially concomitant with rain events. A novel study of the aerodynamic damping of the cables has been carried out through wind tunnel tests. A configuration has been selected based
Mattiello, Emanuele
core  

Melanin's Role in Balancing Mechanical Strength and Reproductive Output in Environmentally Stressed Fungal Spores

Advanced Functional Materials, EarlyView.
Melanin content directly controls fungal spore mechanical properties, with pigmented spores achieving rupture forces two orders of magnitude higher than hyaline spores. Environmental stress drives this quantity‐quality tradeoff; stressed species invest energy in melanin‐reinforced, mechanically superior thick‐walled, super‐hydrophobic spores, while ...
Atul Agrawal, Steven E. Naleway
wiley   +1 more source

Natural vibration response based damage detection for an operating wind turbine via Random Coefficient Linear Parameter Varying AR modelling

Journal of Physics: Conference Series, 2015
The problem of damage detection in an operating wind turbine under normal operating conditions is addressed. This is characterized by difficulties associated with the lack of measurable excitation(s), the vibration response non-stationary nature, and its dependence on various types of uncertainties.
L D Avendaño-Valencia, S D Fassois
openaire   +1 more source

Design Parameters Analysis of Single-Layer Cable Flexible Photovoltaic Support Structure

Taiyuan Ligong Daxue xuebao
【Purposes】 In order to study the stress and deformation of single-layer cable flexible photovoltaic bracket structure, the linear filter method is used to simulate the pulsating wind time history, and the finite element software is used to conduct the ...
LI Zhenxing, ZHAI Jianqiang, WU Caixia, WANG Yanjun, ZHANG Peng, JIANG Shuning, GUO Zhaosheng   +6 more
doaj   +1 more source

An Integrated Oxygen‐Supplying Device and Predictive Multiphysics Model for Extended Ambient Transport of Insulin‐Producing Cells

Advanced Functional Materials, EarlyView.
Cell therapies typically rely on cold‐chain logistics and cryopreservation, limiting access and compromising cell quality. Here, a dual‐chamber device separates an oxygen‐supplying chamber from a hyaluronic acid cargo chamber, sustaining oxygen delivery for over 70 h and enabling ambient‐temperature shipment.
Daniel A. Domingo‐Lopez, Ruth Tarpey, Benjamin Brennan, Bryan D. Boyle, Amir M. Alsharabasy, Abhik Mallick, Gabriella Bellavia, Abhay Pandit, Garry P. Duffy, Ruth E. Levey   +9 more
wiley   +1 more source

Random Wind Vibration Control of Transmission Tower-Line Systems Using Shape Memory Alloy Damper

Buildings
Shape memory alloy dampers (SMADs) are widely applied in structural vibration control due to their excellent superelastic properties. However, there has been no research on the random wind-induced vibration control of transmission tower-line (TTL ...
Mingjing Chang, Xibing Fang, Shanshan Zhang, Dingkun Xie   +3 more
doaj   +1 more source

Strategia di ottimizzazione vibroacustica per un gearbox di turbina eolica. Vibroacoustic optimisation strategy for a wind turbine gearbox [PDF]

, 2013
This thesis is the result of a collaboration with ZF Wind Power, to investigate the approach to derive a simplified geometry of a state-of-the-art gearbox of a wind turbine, and to optimise this for noise and vibration. The reproduction of the simplified
Piva, Marco
core  

Electrically Induced Phase Transition and Synaptic Functionality in MoTe2/Graphene Memristors

Advanced Functional Materials, EarlyView.
An electrically induced reversible 2H ↔ 1T′ phase transition is demonstrated in a vertical Au/Ti/MoTe2/graphene memristor with a laterally contacted graphene electrode. Resistive switching proceeds through a compositionally invariant amorphous/2H ↔ amorphous/1T′ transformation, in which a self‐formed amorphous MoTe2 interfacial region is proposed to ...
Chien‐Hua Wang, Mu‐Pai Lee, Jhen‐Dong Tsai, Liang‐Ying Hsieh, Jui‐Yuan Chen, Chun‐Wei Huang, Yen‐Fu Lin, Wen‐Wei Wu   +7 more
wiley   +1 more source

Characteristics of bypass flow of pipeline suspension bridge and variation rules of mean aerodynamic force coefficients

You-qi chuyun, 2020
For acquisition of accurate aerodynamic parameters of the pipeline suspension bridge, the numerical wind tunnel model for the typical girder section of the oil and gas pipeline suspension bridge was built, and SST k-ε model was used as the numerical wind
Leibin ZUO, Cunming MA, Guohui LI, Wenjin WANG, Na NI, Yuliang GONG   +5 more
doaj   +1 more source

KARAKTERISTIK PEMANEN DAYA LISTRIK BERBASIS GETARAN STRUKTUR

Rekayasa Mesin, 2023
Mechanical vibration is a potential source of micro-electrical energy harvesting mechanisms for micro electrical power supply for IoT system networks, wireless and sensors where the power requirements are relatively lower and available independently.
La Ode Ahmad Barata, Samhuddin Samhuddin
doaj   +1 more source