Results 41 to 50 of about 9,857 (246)

New Steels and Technologies for Nitrided Parts of Long Life Machines

Механика машин, механизмов и материалов, 2021
The analysis of the used steels for nitrided parts is carried out. On the basis of a new methodology for increasing the strength of structural steels and parts, new scientific approaches and practical solutions are proposed and considered for the ...
Petr A. Vityaz, Maksim V. Sotnikov, Aleksandr G. Sidorenko, Vladimir I. Moiseenko, Sergey A. Shishko   +4 more
doaj   +1 more source

Humid‐Air Condensation Heat Transfer on Hierarchical Structured Superhydrophobic Graphite Composites

Advanced Materials Interfaces, EarlyView.
Humid‐air condensation on graphite composites shows that making a surface superhydrophobic is not sufficient to enhance heat transfer. A hierarchical CuO/lauric‐acid coating yields spherical droplets but promotes Wenzel‐type pinning and adds effective thermal resistance under operation.
Raphael Raab, Tobias Melchior, Hannah Mennecke, Daniel Fotachov, Egbert Oesterschulze, Thomas Reviol, Erik von Harbou, Hans‐Jörg Bart   +7 more
wiley   +1 more source

Calculation of sub-surface-initiated fatigue fractures in gears [PDF]

, 2019
Power-transmitting gears are typically heat-treated, most often case-hardened, to improve the fatigue strength and therefore to ensure higher fatigue life.
Müller, Daniel, Stahl, Karsten, Tobie, Thomas   +2 more
core  

Advances in Solid‐Phase Processing Techniques: Innovations, Applications, and Future Perspectives

Advanced Materials Technologies, EarlyView.
Based on practical manufacturing challenges, this review examines advanced solid‐phase processing techniques that overcome the inherent limitations of conventional melting‐based and traditional solid‐phase manufacturing, enabling the production of higher‐performance components at reduced cost through process innovation and improved supply‐chain ...
Tianhao Wang
wiley   +1 more source

Contact fatigue behavior of plasma-nitrided carbide-free bainitic gears produced by controlled forging: a process-energy-efficient alternative to carburized ferritic-pearlitic gears

Journal of Materials Research and Technology
This study presents an integrated experimental, analytical, and numerical investigation of the contact fatigue behavior of forged gears produced through an alternative, process-energy-efficient manufacturing route combining controlled forging, continuous
Rafael Luciano Dalcin, Valcir Marques de Menezes, Alexandre da Silva Rocha, Andryéli da Silva Soares, Rodrigo Afonso Hatwig, Mario Wolfart Júnior, Luis Fernando Nicolini, Carlos Henrique da Silva   +7 more
doaj   +1 more source

Damage of the Surface Layer Gears in Grinding Process. [PDF]

, 2013
The influence of the grinding process on the condition of the surface layer (SL) obtained by the treatment of the gear with grinding wheels Al2O3, CBN, GF, SG, alloy steels with different parameters of the grinding process and the type of cooling liquid –
Wlazło, Jakub, Wójcik, Ryszard
core  

BS-ISO helical gear fatigue life estimation and wear quantitative features analysis [PDF]

, 2009
Original article can be found at: http://www3.interscience.wiley.com/ Copyright Blackwell Publishing. DOI: 10.1111/j.1475-1305.2008.00457.xLack of representative theoretical models for gear wear causes difficulties in their useful lifetime prediction ...
Bostjan, Hutchings, Khan, Kudish, Mang, Neale, Roylance   +6 more
core   +1 more source

On the Origins of Toughness in Corymbia calophylla (Marri Tree) Nuts

Advanced Science, EarlyView.
We uncover the natural toughening mechanisms of the marri nut, including fiber pullout, crack deflection, and a viscoelastic matrix, which enable exceptional energy absorption and ductility comparable to Teflon, with an elastic modulus similar to acrylic.
Wegood M. Awad, Ahmed S. Dalaq, Marieh B. Al‐Handawi, Rezo Getsadze, Oraib Al‐Ketan, James Weston, Mohammed Daqaq, Panče Naumov   +7 more
wiley   +1 more source

Harnessing Phase Separation for the Development of High‐Performance Hydrogels

Advanced Science, EarlyView.
ABSTRACT Hydrogels are indispensable for the development of next‐generation bioelectronics, soft robotics, and biomedical devices, where their mechanical properties determine performance and reliability. Among strategies to enhance hydrogel mechanics, phase separation enables controlled heterogeneity resulting in gel networks that are reinforced by ...
Yue Shao, Yiming Ma, Baihao Shao, Molly M. Stevens   +3 more
wiley   +1 more source

Tooth Surface Deviation Analysis for Continuous Generation Grinding of Internal Gears

Applied Sciences
In order to resolve the issues of low efficiency and poor precision in the traditional finishing process of hardened internal gears, a method is proposed for calculating the profile curves of a drum-shaped grinding tool suitable for mass finishing of ...
Jianjun Yang, Zhaolong Zhang, Shuai Wang, Jialu Wu   +3 more
doaj   +1 more source