Results 101 to 110 of about 11,806 (306)

Adaptive Rotor Blade for Vibration Reduction

open access: yes, 2000
Applying adaptronics to helicopters has a high potential to significantly suppress noise, reduce vibration and increase the overall aerodynamic efficiency.
Matthias, M.   +3 more
core  

Nano Carbon‐mesh with Excellent Bonding Performance via Hydro‐cage De‐shielding Strategy

open access: yesAdvanced Science, EarlyView.
A hydro‐cage de‐shielding strategy transforms cellulose‐based films into a dragonfly‐wing‐like nano carbon‐mesh (NCM) adhesive through instantaneous carbonization‐polymerization. The resulting NCM‐plywood achieves exceptional wet shear strength (1.24 MPa at 63°C), exceeding Class II plywood standards, and retains 0.73 MPa after boiling‐water cycles ...
Weijia Yang   +14 more
wiley   +1 more source

Toward Long‐Term Reliable Human‐Machine Interaction: A Flexible, Breathable, and Self‐Powered Pressure Sensor System With Firefighting Validation

open access: yesAdvanced Science, EarlyView.
This work develops a breathable potentiometric self‐powered pressure sensor with good wearability, using a non‐woven fabric substrate and hydrogel electrolyte. The sensor is integrated into a five‐channel smart glove to acquire reliable hand motion signals, which are processed by a CNN for identity verification and smart vehicle control in human ...
Qilong Zhang   +10 more
wiley   +1 more source

旋转叶片异步振动参数辨识方法及试验验证

open access: yesJixie qiangdu, 2021
Based on the principle of blade tip timing( BTT) and the vibration principle of one degree of freedom,the parameter identification algorithm of rotating blade asynchronous vibration is established by using all phase FFT( apFFT) and least square method ...
王茜, 雷晓波
doaj  

The Vibration of Turbine Blades with shroud

open access: yesTransactions of the Japan Society of Mechanical Engineers, 1957
We experience sometimes the failure of turbine blades of about tencentimeter long caused by fatigue due to the vibration. The cause of this phenomenon is considered to be due to the resonant vibration of the fixed supported normal vibration of the blade system, whose blades are interconnected by a shroud on their top ends, excited by the periodic force
Fujino, Tsutomu, Kono, Keisuke
openaire   +2 more sources

Research of Machining Vibration Restraint Method for Compressor Blade

open access: yes, 2016
Machining vibration is one of the most important reasons that influences the tool life, machining efficiency and the final surface quality, the performance and the reliability of aero-engine is affected directly by compressor blades.
Wu, Baohai   +3 more
core   +1 more source

An Energy Autonomous Microneedle Array‐Based Sensing System for Continuous Biomarker Monitoring

open access: yesAdvanced Science, EarlyView.
This work presents an innovative self‐powered wearable biosensor system for real‐time monitoring of multiple biomarkers in interstitial fluid. The device integrates stainless steel‐based minimally invasive microneedles with ion‐selective membranes, enabling simultaneous Na+, K+, Ca2+, pH, and glucose detection.
Arnab Pal   +9 more
wiley   +1 more source

Simulating eddy current sensor outputs for blade tip timing

open access: yesAdvances in Mechanical Engineering, 2018
Blade tip timing is a contactless method used to monitor the vibration of blades in rotating machinery. Blade vibration and clearance are important diagnostic features for condition monitoring, including the detection of blade cracks.
Nidhal Jamia   +3 more
doaj   +1 more source

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