Results 61 to 70 of about 1,595,600 (284)
Research on Noise Characteristics and Control Technology of Metro Energy Feedback Converter
机车电传动, 2020 The noise characteristics of metro energy feedback converter were experimentally studied to analyze the main noise source, noise transmission rules and the acoustic performance of the inlet/outlet structure.
Zhenpeng LI +5 more
doaj
CURRENT STATE OF THE PROBLEM OF THE DEVELOPMENT OF ACOUSTIC LINERS FOR GAS-TURBINE ENGINES
Авіаційно-космічна техніка та технологія, 2020 A review of current international aviation noise requirements is provided. It is shown that international requirements for aircraft noise levels are constantly increasing.
Євген Олександрович Римаренко
doaj +1 more source
Experimental Study of the Leakage Flow in an Axial-Flow Fan at Variable Loading
International Journal of Turbomachinery, Propulsion and Power, 2021 The present paper reports a 2D-PIV (particle image velocimetry) study of the effect of the operating point on the leakage flow in a low-speed ring fan.
Edward Canepa +3 more
doaj +1 more source
Lifting Fan Noise Studies [PDF]
ASME 1969 Winter Annual Meeting: GT Papers, 1969 The paper reviews the results of an experimental investigation of noise radiated from a VTOL lifting fan inlet under static inflow conditions. The results are discussed in the light of recent theoretical and experimental conclusions on compressor noise radiation, combined with relevant data on the aerodynamic characteristics of the fan. The presence of
G. Krishnappa, G. G. Levy
openaire +1 more source
dynoGP: Deep Gaussian Processes for Dynamic System Identification
International Journal of Adaptive Control and Signal Processing, EarlyView.This work introduces a novel class of deep models for system identification, dynamical deep Gaussian processes, which combine the strengths of data‐driven methods, such as those based on neural network architectures, with the ability to output a probability distribution for uncertainty representation.
Alessio Benavoli +3 more
wiley +1 more source
Noise Elimination and Reduction Structure for Tram Air-conditioning Return Duct
Chengshi guidao jiaotong yanjiuObjective The noise generated by air-conditioning system is a primary source of static noise in trams, with most of the interior noise originating from the air-conditioning supply fan.
LI Dengke +5 more
doaj +1 more source
Prediction and Reduction of Aerodynamic Noise of the Multiblade Centrifugal Fan
Advances in Mechanical Engineering, 2014 An aerodynamic and aeroacoustic investigation of the multiblade centrifugal fan is proposed in this paper, and a hybrid technique of combining flow field calculation and acoustic analysis is applied to solve the aeroacoustic problem of multiblade ...
Shuiqing Zhou, Jun Wang
doaj +1 more source
Advanced Engineering Materials, EarlyView.Predicting extreme defects in additive manufacturing remains a key challenge limiting its structural reliability. This study proposes a statistical framework that integrates Extreme Value Theory with advanced process indicators to explore defect–process relationships and improve the estimation of critical defect sizes. The approach provides a basis for
Muhammad Muteeb Butt +8 more
wiley +1 more source
AerospaceThe rotor–stator interaction noise is a major source of fan noise. Especially for low-speed fan stages, the tonal component is typically a dominant noise source.
Stephen Schade +3 more
doaj +1 more source
Advanced Engineering Materials, EarlyView.Low‐temperature imidization of PEG‐modified polyimide enables fully screen‐printed, roll‐to‐roll fabrication of flexible electrodes on PET substrates, delivering robust mechanical durability and reliable ECG/EMG signal performance for wearable electronics.
Akib Abdullah Khan, Jong‐Hoon Kim
wiley +1 more source