Results 21 to 30 of about 3,531 (255)

Design, generation and tooth width analysis of helical curve-face gear

open access: yesJournal of Advanced Mechanical Design, Systems, and Manufacturing, 2015
A new type of gear pair consisting of a helical non-circular gear and a curve-face gear is designed, which can transmit the time-varying motion of intersected axes of rotation.
Chao LIN, Dong ZENG
doaj   +1 more source

Profile design and displacement analysis of the low pulsating gear pump

open access: yesAdvances in Mechanical Engineering, 2018
Aiming at the problems of the general involute external gear pump, a gear pump with double circular arc helical gear as motion pair is proposed. Based on the comparison and analysis of their meshing characteristics, the advantages of contact strength ...
Geqiang Li, Longfei Zhang, Weifeng Han
doaj   +1 more source

Seeded fault detection on helical gears with acoustic emission [PDF]

open access: yes, 2009
Acoustic emission (AE) is one of many technologies for health monitoring and diagnosis of rotating machines such as gearboxes. Although significant research has been undertaken in understanding the potential of AE in monitoring gearboxes this has been
Mba, David, Eftekharnejad, Babak
core   +1 more source

Theoretical and experimental working life comparison for a helical gear under linear pitting failure [PDF]

open access: yes, 2007
For machine components like gears and bearings, working life calculation is one of the complex issues to deal with. This is because the mechanics of their operation is dependent on many parameters, like loading, friction and lubrication etc.
Khan, Muhammad Ali, Starr, Andrew G.
core   +1 more source

Influence of rotational speed and torque on meshing efficiency of double helical gear transmission system

open access: yesMechanics & Industry, 2021
The accuracy of gear meshing efficiency model is the key to study the influence factors of gear meshing efficiency. Experiment is an effective method to verify the theory model.
Wang Cheng
doaj   +1 more source

Optimizing the geometric design of a helical gear through simulation and surface roughness measurement analysis

open access: yes, 2023
In order to elevate the helical gears’ performance, durability, and reduce teeth regarding failures, this study measures the parameters from the non-functional fractured helical gear model and modifies them in order to construct a highly efficient ...
Mammadbayli, Sofiya
core  

Lifetime and meshing-teeth temperature of a crossed helical gear consisting of a plastic gear and a metal gear: In case of no-lubrication

open access: yesJournal of Advanced Mechanical Design, Systems, and Manufacturing, 2017
The strength of plastic greatly varies with temperature; that is, the strength increases as the temperature decreases. Therefore, the lifetime of a plastic gear can be increased by reducing the meshing-teeth temperature of the gear.
Mikio TAKAHASHI   +4 more
doaj   +1 more source

Self‐Assembled Monolayers in p–i–n Perovskite Solar Cells: Molecular Design, Interfacial Engineering, and Machine Learning–Accelerated Material Discovery

open access: yesAdvanced Materials, EarlyView.
This review highlights the role of self‐assembled monolayers (SAMs) in perovskite solar cells, covering molecular engineering, multifunctional interface regulation, machine learning (ML) accelerated discovery, advanced device architectures, and pathways toward scalable fabrication and commercialization for high‐efficiency and stable single‐junction and
Asmat Ullah, Ying Luo, Stefaan De Wolf
wiley   +1 more source

Interface‐Engineered Binary Framework Composites: Advancing Porous Materials for Precision Medicine

open access: yesAdvanced Materials Interfaces, EarlyView.
Binary framework composites integrate two complementary porous architectures into a unified platform, enabling multifunctional design, enhanced structural tunability, and improved physicochemical performance. By combining high surface area, ordered porosity, interfacial synergy, and versatile functionalization, these hybrid materials offer new ...
Navid Rabiee   +3 more
wiley   +1 more source

Fully 3D‐Printed Wave‐Wound Electromagnetic Motors

open access: yesAdvanced Materials Technologies, EarlyView.
This work presents the first fully 3D‐printed wave‐wound electromagnetic motors, which are created using conductive nanoparticle inks, carbon‐filled nylon polymers, and surface mount components. These motors can achieve a stall torque of 7.62N·mmA−1$7.62 \nobreakspace N{\cdot }mm A^{-1}$ and efficiency of 28.2 %, which approaches the performance of ...
Joseph Schwalbe   +4 more
wiley   +1 more source

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