Results 81 to 90 of about 1,093,651 (250)

Pitting damage levels estimation for planetary gear sets based on model simulation and grey relational analysis [PDF]

, 2011
The planetary gearbox is a critical mechanism in helicopter transmission systems. Tooth failures in planetary gear sets will cause great risk to helicopter operations.
Gu, Fengshou, Hu, Niaoqing, Cheng, Zhe, Qin, Guojun   +3 more
core  

Self‐Powered Bearing Sensing and Real‐Time Fault Diagnosis Enabled by Non‐Invasive Triboelectric Sensors and Edge AI Acceleration

Advanced Science, EarlyView.
This study achieves the synergistic integration of self‐powered sensing and edge AI acceleration to establish a real‐time fault diagnosis system. The proposed TENG‐based self‐powered bearing sensor (NSE‐TBS) and FPGA‐accelerated edge AI framework fundamentally break through the inherent limitations of conventional monitoring systems, including complex ...
Kehui Zhu, Zhongheng Liu, Xinming Li, Jinrui Zhang, Meng Li, Yiming Guo, Lihua Han, Yanxue Wang   +7 more
wiley   +1 more source

电镀CBN锥砂轮磨齿热状态的研究

Jixie chuandong, 2004
In this thesis, a new thermal condition model of gear grinding has been suggested for the analysis of the conical-grinding-wheel-workpiece system. And the surface temperature field of ground tooth flanks has been analyzed and calculated using the finite ...
刘竹丽, 张涛, 邱太生
doaj  

Computational analysis of the effect of bogie inclination angle on landing gear noise [PDF]

, 2010
Airframe noise and in particular main landing gear noise is a major noise source during the approach phase. Wind tunnel tests have shown a strong relationship between the inclination angle of the bogie and the noise radiation of a main landing gear ...
Takeda, K., van Mierlo, K.J., Peers, E.
core  

Mathematical models of gear rattle in Roots blower vacuum pumps [PDF]

, 2006
This paper is concerned with the modelling of gear rattle in Roots blower vacuum pumps. Analysis of experimental data reveals that the source of the noise and vibration problem is the backlash nonlinearity due to gear teeth losing and re-establishing ...
Wilson, RE, Homer, Martin, Homer, ME, Wilson, R. Eddie, Mason, Joanna, Mason, J, Mason, JF   +6 more
core   +1 more source

Integrated Ultrasonic Platform for Bioelectronic Control through Biological Barriers Based on Metasurface

Advanced Science, EarlyView.
A metasurface‐enabled ultrasonic platform achieves precise multi‐focal control through biological barriers, real‐time physiology‐driven modulation, and simultaneous wireless power and data transmission. By unifying wavefront engineering, closed‐loop feedback, and acoustic communication, this work establishes key enabling technologies toward scalable ...
Chuanxin Zhang, Hanjie Xiao, Xue Jiang, Dean Ta   +3 more
wiley   +1 more source

Intraspecific variation in resilience traits of eelgrass across intertidal stress gradients and oyster aquaculture methods

Frontiers in Marine Science
Species persist through resistance and recovery traits induced by natural stressors. Whether human activities exacerbate or moderate the effects of natural stressors is an open question.
Jennifer L. Ruesink, Katie Houle, Kristy J. Kroeker, Brett R. Dumbauld, Fiona C. Boardman, Nathaniel S. Lewis, Brooke A. McIntyre, Andrew D. Suhrbier, Bobbi Hudson   +8 more
doaj   +1 more source

Detection of Aircraft Touchdown Using Longitudinal Acceleration and Continuous Wavelet Transformation

Sensors, 2020
The paper presents a methodology enabling the detection of aircraft touchdowns based on data obtained from accelerometers attached to the structural parts of the airframe in the cockpit or passenger compartment.
Jerzy Bakunowicz, Paweł Rzucidło
doaj   +1 more source

A Programmable Multi‑Modal Information Encryption System Based on the Dynamic Wetting Behavior of Liquid Metal

Advanced Science, EarlyView.
This work presents a programmable multimodal information encryption device that harnesses the dynamic wetting behavior of liquid metal to achieve secure, reconfigurable, and high‐precision encryption and decryption of diverse data types, including text and images.
Xuedong Qiang, Min Mao, Yihao Wang, Nan Li, Mengyu Jiang, Chenkun Sun, Bangdeng Du, Jifei Ye, Linyan Wang, Fei Zhan, Lei Wang   +10 more
wiley   +1 more source

Kinematic analysis of complex gear mechanisms [PDF]

, 2010
This paper presents a general kinematic analysis method for complex gear mechanisms. This approach involves the null-space of the adjacency matrix associated with the graph of the mechanism weighted by complex coecients.
Penaud, Julie, Alazard, Daniel
core