Results 61 to 70 of about 3,531 (255)

Triboelectric–Electromagnetic Generator‐Enabled Hybrid Power Backpack for Self‐Powered Field Safety Management

open access: yesENERGY &ENVIRONMENTAL MATERIALS, EarlyView.
A lightweight hybrid backpack integrating SC‐TENGs and R‐EMGs harvests biomechanical energy during walking. With a low activation speed of 3 km h−1 and a high specific power of 0.18 W kg−1, it enables self‐powered field safety management. The power backpack refers to an energy‐harvesting solution engineered to mitigate battery reliance in wearable ...
Jie Chen   +6 more
wiley   +1 more source

Analysis and Simulation of Meshing Efficiency of Helical Gear Differential Gear Train

open access: yesJixie chuandong, 2017
On the basis of taking 2K-H type helical differential gear train as the basic prototype,by analyzing the transmission efficiency of its transformation part and piecewise integration in meshing range,the result of the meshing efficiency of the internal ...
Zhou Chunguo   +3 more
doaj  

De‐Carbonizing the Transport Sector on the University Campus: A Techno‐Economic‐Environment Assessment and Optimization of PV Fed Electric Bicycles Amid Global Fuel Crisis

open access: yesEnergy Science &Engineering, EarlyView.
This study develops and evaluates a solar PV‐fed electric bicycle system optimized for university campuses in Pakistan. The techno‐economic analysis demonstrates significant fuel savings, emission reductions, and sustainability benefits, promoting a cost‐effective, eco‐friendly, and renewable transportation alternative amid rising global fuel and ...
Muhammad Abdullah Khan   +4 more
wiley   +1 more source

Reduction of gear pair transmission error with tooth profile modification

open access: yes, 2008
The gear noise problem that widely occurs in power transmission systems is typically characterised by one or more high amplitude acoustic signals. The noise originates from the vibration of the gear pair system caused by transmission error excitation ...
Tharmakulasingam, R   +2 more
core  

基于修形蜗杆砂轮的斜齿轮参数化设计

open access: yesJixie chuandong, 2014
According to the actual process of worm grinding wheel forming helical gear,the parameter mathematics model of the surface of helical gear and fillet is established.The helical gear tooth profile modification curve is achieved by modifying the profile of
曾红, 刘鹏, 唐文, 王延忠
doaj  

Triboelectric nanogenerators for vehicle intelligent cockpits

open access: yesFlexMat, EarlyView.
Converting mechanical stimuli from drivers and vehicle motion into electrical signals, triboelectric nanogenerators provide promising interfaces toward passive, flexible, distributed and intelligent sensing for next‐generation automotive cockpits to support three core functional dimensions: driver state monitoring, vehicle state monitoring, and human ...
Haiqiu Tan   +9 more
wiley   +1 more source

Geometric Modeling and Contact Characteristic Analysis of Hindley Worm and Cylindrical Helical Gear Transmission

open access: yesJixie chuandong, 2018
A kind of Hindley worm and cylindrical helical gear is presented. According to the geometrical parameters of Hindley worm,the geometric parameters of the helical gear with the Hindley worm is calculated,a three-dimensional model of Hindley worm and ...
Zhao Chaofei, Wei Bingyang
doaj  

A Model to Facilitate Resilience Among Diagnostic Radiography Students

open access: yesJournal of Medical Radiation Sciences, EarlyView.
The model provides a framework for fostering resilience among diagnostic radiography students by strengthening self‐efficacy and establishing social connections. ABSTRACT Introduction A significant increase in the demand for radiography examinations and the corresponding rise in the workload of radiographers has been noted.
Heidi Thomas   +2 more
wiley   +1 more source

Calibration of a 400 mm helical master gear at INRIM [PDF]

open access: yes, 2017
A complete - and first ever at INRIM - calibration of a master gear is described. This includes the evaluation of the uncertainty of measurement, which is particularly challenging for this type of complex ...
D. Corona   +3 more
core  

Finite Element Analysis of Helical Gear

open access: yes, 2018
The gears mostly fail due tobending and surface stresses on gear tooth. This paper investigates the characteristics of a pair of helical gear system, bending stresses, in the gear mesh. Gear plays a major role in power transmission in mechanical systems.
Mayank Ahirwar, Anand Kushwah, Amit Soni
core   +1 more source

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