Results 91 to 100 of about 561,689 (314)

Phased array ultrasonic testing of gear tooth

open access: yesCogent Engineering
This paper proposes a new testing method, phased array ultrasonic testing, for the internal defects of gear teeth, which can be used to inspect the teeth of final products, breaking the limitations of incomplete volume coverage of conventional ultrasonic
Liang Wang, Chenchen Ma
doaj   +1 more source

Literature Review of Gear-based Management Options in the Caribbean for Four Reef Fishing Methods: Fish Traps, Spears, Hook and Line, and Beach Seines [PDF]

open access: yes, 2016
Many Caribbean reef fisheries have been overexploited for decades and often their decline has been accelerated by a loss of habitat. Improved management of Caribbean reef fisheries is vital to ensure their future sustainability.

core  

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

open access: yesAdvanced 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   +7 more
wiley   +1 more source

Silicon‐Embedded Multifunctional Heterogeneous Integration for Miniaturized Photoplethysmography Detection Devices

open access: yesAdvanced Science, EarlyView.
ABSTRACT The multifunctional integration of chips with high flexibility and scalable manufacturing is crucial for enhancing chip performance, reducing chip size, and simplifying chip design. However, balancing volume, cost, flexibility, and functionality using traditional heterogeneous integration methods is challenging.
Lang Chen   +7 more
wiley   +1 more source

Fast Load Distribution Calculation for Cylindrical Gears with Non-Involute Tooth Profiles

open access: yesMachines
Advancements in manufacturing technology provide users with new opportunities for the design of gears. Special gearings with customized non-involute tooth profile geometries offer a promising alternative to conventional involute gears, addressing ...
Karsten Fetzer   +4 more
doaj   +1 more source

Summary of NASA landing-gear research [PDF]

open access: yes
This paper presents a brief summary of the airplane landing gear research underway at NASA. The technology areas include: ground handling simulator, antiskid braking systems, space shuttle nose-gear shimmy, active control landing gear, wire brush skid ...
Fisher, B. D.   +2 more
core   +1 more source

The Gap-Tooth Method in Particle Simulations

open access: yes, 2003
We explore the gap-tooth method for multiscale modeling of systems represented by microscopic physics-based simulators, when coarse-grained evolution equations are not available in closed form.
C.William Gear   +19 more
core   +1 more source

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

open access: yesAdvanced 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   +3 more
wiley   +1 more source

Commercial Fishing Port Development in North Florida [PDF]

open access: yes
The author has identified the following significant results. Seven major counties were examined: Escambia, Bay, Gulf, Franklin, Wakulla, Nassau, and Duval. Population and economic activity were reviewed, along with commercial fishing and port facilities.
Cato, J. C.   +4 more
core   +1 more source

Instabilities of geared couplings: Theory and practice [PDF]

open access: yes, 1982
The use of couplings for high speed turbocompressors or pumps is essential to transmit power from the driver. Typical couplings are either of the lubricated gear or dry diaphragm type design.
Kirk, R. G., Mondy, R. E., Murphy, R. C.
core   +1 more source

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