Results 141 to 150 of about 4,321 (293)

Turbojet blade vibration data acquisition design and feasibility testing

, 1978
A turbojet blade vibration data acquisition system was designed to allow the measurement of blade vibration. The data acquisition system utilizing 96 microprocessors to gather data from optical probes, store, sort and transmit to the central computer is ...
Hess, D. A., Frarey, J. L., Petersen, N. J.   +2 more
core  

Review of Non-contact Blade Vibration Monitoring Based on Blade Tip Timing

In the working state of the aero engine, it is very important to accurately monitor the vibration characteristics of the rotor blades to obtain their operating status, aiming to avoid serious failures such as the fatigue fracture of blades and rub-impact
Gu, Fengshou, Fu, Chao, Zheng, Longxi, Wang, Fubin, Lu, Kuan   +4 more
core   +1 more source

Molecularly Engineered Dual‐Crosslinked Polymer Dielectrics for 200 °C Capacitive Energy Storage

ENERGY &ENVIRONMENTAL MATERIALS, EarlyView.
This work establishes a molecular engineering strategy that constructs a robust dual‐crosslinked network in polymer nanocomposites, achieving a record‐high energy density of 5.17 J cm−3 with >90% efficiency at 200 °C. The multiscale‐validated design simultaneously enhances dielectric polarization and introduces deep electron traps, resulting in ...
Xue Li, Ling Weng, Lizhu Guan, Xiaoming Wang, Ze Li, Xiaorui Zhang, Ruiqun Pan, Yuhan Li, Zijian Wu, Yingtang Zhang   +9 more
wiley   +1 more source

Design and experimental characterization of a non intrusive measurement system of rotating blade vibration

, 1994
A measurement system for nonintrusive monitoring of rotating blade vibration in turbomachines based on fiber optic sensors is presented. The design of the whole system is discussed; the development of special purpose sensors, their interfacing to the ...
P. Nava, E. P. Tomasini, ROSSI, Gianluca, N. Paone   +3 more
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Origin of Physicochemical and Mechanical Stability of Low‐Temperature Prepared TiO2‐Based Photocatalytic Films: Surface Hydroxyl Density Matching

ENERGY &ENVIRONMENTAL MATERIALS, EarlyView.
Material science advances show how surface chemistry improves low‐temperature prepared TiO2‐SiO2 composite films. Using a colloidal‐based synthesis method instead of a powdered‐based one, researchers exploit hydroxyl groups' interfacial interactions to create nanoscale structures with superior physicochemical and mechanical stability.
Andraž Šuligoj, Mohamad El‐Roz, Goran Dražić, Frédéric Thibault‐Starzyk, Pegie Cool, Nataša Zabukovec Logar, Urška Lavrenčič Štangar, Nataša Novak Tušar   +7 more
wiley   +1 more source

Design and experimental characterization of a non intrusive measurement system of rotating blade vibration

, 1993
: A measurement system for non-intrusive monitoring of rotating blade vibration in turbomachines based on fiber optic sensors is presented. The design of the whole system is discussed; the development of special purpose sensors, their interfacing to the ...
Nava P., Tomasini E. P., Paone N., ROSSI, Gianluca   +3 more
core  

Operational deflection shape measurements on rotating bladed disks with tracking continuous-scanning LDV. [PDF]

Sci Rep
Liu C, Jing T, Xu Z, Liu L, He J.
europepmc   +1 more source

Waste to Hydrogen: Transforming Food Waste Into Biohythane (Bio‐H2 + Bio‐CH4) in a Two‐Stage Reactor With the Aid of a Metal‐Ion Catalyst

Energy Science &Engineering, EarlyView.
This study demonstrates a two‐stage catalytic bioreactor system that converts real food waste into high‐purity biohydrogen and biohythane. In Stage‐1, an enriched Clostridium thermocellum culture combined with Ni2+─Fe2+ bimetallic catalysis enhances hydrolysis efficiency and hydrogenase activity, resulting in a 77% increase in H2 yield and 75.8% purity
K. V. Sreedharan, Debabrata Barik, Ayyar Dinesh, D. Shanmugapriya, M. Santhamoorthy, N. Ashok   +5 more
wiley   +1 more source

Subgingival instrumentation

Periodontology 2000, EarlyView., 2023
Abstract The S3‐level clinical guidelines for the treatment of patients with periodontitis stages I–III published by the European Federation of Periodontology in 2020, suggest a pre‐established stepwise approach for oral‐healthcare professionals with precise therapeutic pathways.
Cristiano Tomasi, Kajsa H. Abrahamsson, Danae Apatzidou   +2 more
wiley   +1 more source

Laser-optical blade tip clearance measurement system

, 1979
A laser-optical measurement system was developed to measure single blade tip clearances and average blade tip clearances between a rotor and its gas path seal in rotating component rigs and complete engines.
Barranger, J. P., Ford, M. J.
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