Results 71 to 80 of about 17,794 (305)

Wear mechanisms in polyoxymethylene spur gears

open access: yesWear, 2019
Abstract The interaction of a polymer-steel spur gear pair is naturally prone to cause wear of the softer polymer material. Experimental equipment was therefore designed and constructed to run a polymer-steel spur gear pair with sufficiently accurate instrumentation such that the load and speed could be measured under a range of operating conditions.
Evans, Stuart, Keogh, Patrick
openaire   +2 more sources

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

Influence on micro-geometry and surface characteristics of laser powder bed fusion built 17-4 PH miniature spur gears in laser shock peening

open access: yesAdvances in Industrial and Manufacturing Engineering
Micro-geometrical errors, surface roughness, and surface integrity (microstructure, residual stresses, microhardness) play an important role in defining the quality of the gears as they directly affect their noise, vibration characteristics and service ...
Sunil Pathak   +9 more
doaj   +1 more source

Simulation of Rotational Vibration of Spur Gears

open access: yesBulletin of JSME, 1983
This paper introduces a developed simulator on a rotational vibration and a strain at a root of a tooth, on a power transmission spur gear. The simulator solves a differential equation with one degree of freedom in consideration of the behaviour of the stiffness around tooth tip meshing.
Kiyohiko UMEZAWA   +2 more
openaire   +3 more sources

The EU Cities Mission: A Governance Innovation for Stockholm?

open access: yesEnvironmental Policy and Governance, EarlyView.
ABSTRACT Acknowledging that cities play a key role in climate change mitigation, the European Union (EU) launched the Cities Mission in 2021 to accelerate urban climate action. Intended as a governance innovation, it seeks to stimulate mission‐oriented governance in cities.
Lisa Sanderink   +2 more
wiley   +1 more source

修形直齿轮的啮合干涉与啮合间隙

open access: yesJixie chuandong, 2005
Errors of modified spur gears results in meshing interference or meshing clearance at the position of mating teeth coming into or out of contact. Based on the analysis of the relation among tooth deformation, normal profile modification and manufacturing
孙月海, 郑惠江, 张策
doaj  

Lubricant and additive effects on spur gear fatigue life [PDF]

open access: yes
Spur gear endurance tests were conducted with six lubricants using a single lot of consumable-electrode vacuum melted (CVM) AISI 9310 spur gears. The sixth lubricant was divided into four batches each of which had a different additive content. Lubricants
Scibbe, H. W.   +2 more
core   +1 more source

Open Space Policy‐Making and Planning in Urban Regions: Towards a Theoretical Approach Based on the Multiple Streams Framework

open access: yesEnvironmental Policy and Governance, EarlyView.
ABSTRACT Open space networks provide multiple ecosystem services and other benefits which are particularly important to urban regions. Accordingly, there are many examples around the world of urban‐regional open space policies such as regional parks and green belts that connect non‐built‐up areas over several municipalities. Yet it is still unclear how
Gerd Lintz, Mariam Diagayété
wiley   +1 more source

Effect of five lubricants on life of AISI 9310 spur gears [PDF]

open access: yes
Spur-gear surface fatigue tests were conducted with five lubricants using a single lot of consumable-electrode vacuum melted (CVM) AISI 9310 spur gears.
Townsend, D. P., Zaretsky, E. V.
core   +1 more source

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