Results 31 to 40 of about 5,544 (292)

Acoustic Emissions and monitoring bearing health [PDF]

open access: yes, 2003
Acoustic emission (AE) was originally developed for non-destructive testing of static structures. however, over the years its application has been extended to health monitoring of rotating machines and bearings.
Mba, David
core   +1 more source

Corrosion Resistance and Tribological Properties of Laser Cladding Layer of H13 Die Steel Strengthened by Ultrasonic Rolling

open access: yesChinese Journal of Mechanical Engineering, 2022
Laser cladding is a new surface repair method that can improve the wear and corrosion resistance of substrate surfaces. However, the cladding layer typically exhibits a rough surface, high hardness and large residual tensile stress, and thus requires ...
Kaikui Zheng   +3 more
doaj   +1 more source

Exploration of Key Process Parameters and Properties of 40Cr Steel in Ultrasonic Surface Rolling Process

open access: yes, 2022
Ultrasonic surface rolling (USRP) is an effective process to improve a workpiece’s fatigue property, in which ultrasonic vibration and static force are applied on the workpiece’s surface.
Qingshan Jiang   +7 more
core   +1 more source

Optimization of ultrasonic rolling parameters act on thread root and its influence on the fatigue life of bolts [PDF]

open access: yesITM Web of Conferences
Due to the large stress concentration at the root of the external thread, fatigue failure is apt to occur when subjected to alternating loads. In present study, to improve the fatigue resistance of threaded components, an ultrasonic rolling method was ...
Liu Xuanyu   +3 more
doaj   +1 more source

Experimental study of ultrasonic rolling processing

open access: yesJournal of Physics: Conference Series, 2019
Abstract The ultrasonic vibration device and the rolling pressure measurement device are added on the ordinary rolling equipment, which form the ultrasonic rolling equipment. Due to the ultrasonic impact, ultrasonic rolling processing can obtain better surface quality and surface reinforcement than ordinary rolling processing.
Zhang Da, Yi chunjie
openaire   +1 more source

Ultrasonic Surface Rolling Process: Properties, Characterization, and Applications

open access: yes, 2021
Ultrasonic surface rolling process (USRP) is a novel surface severe plastic deformation (SPD) method that integrates ultrasonic impact peening (UIP) and deep rolling (DR) to enhance the surface integrity and surface mechanical properties of engineering ...
Ashok Kumar Perka   +6 more
core   +1 more source

Improved gray wolf optimization algorithm for optimizing ultrasonic rolling parameters of GCr15 steel [PDF]

open access: yesAIP Advances
Ultrasonic rolling, a synergistic surface-strengthening technique combining high-frequency vibrations with rolling deformation, offers significant potential for enhancing material surface integrity.
Yeshen Lan, Chuchu Rao, Xi Zeng
doaj   +1 more source

Analysis on Cause of Off-Qualified Continuous-Rolling Products of Steel C70S6 BY by Ultrasonic Detection and Process Improvement

open access: yesTeshugang, 2019
The production flow sheet of 4>60 mm bar products of non-quenching and non-tempering steel C70S6 BY is 60 t UHP EAF-LF-VD-240 mm x240 mm bloom casting-c-ontinuous rolling.
doaj   +1 more source

Study on microstructure of 42CrMo steel by ultrasonic surface rolling process

open access: yesScientific Reports, 2023
AbstractTo explore the microstructure formation mechanism of 42CrMo steel under the strengthening of ultrasonic surface rolling process (USRP), the combination of theoretical analysis and experiment was used to conduct in-depth research on USRP. Firstly, according to contact mechanics and Hertz contact theory, the calculation model of contact stress ...
Haojie Wang   +3 more
openaire   +3 more sources

Measurement of metal–roll interface during metal rolling using normal and oblique ultrasonic reflection [PDF]

open access: yes, 2019
It is important to monitor the roll bite interface during metal rolling to maintain the product size and homogeneity so as to minimize the material wastage.
Adebayo, A.   +3 more
core   +1 more source

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