Results 21 to 30 of about 24,069 (204)
Crystals, 2023 To repair or improve the performance of H13 hot working molds through the additive manufacturing process, IN 718 was coated on H13 die steel by high-speed laser cladding followed by an ultrasonic surface rolling process (USRP).
Jingbin Hao +3 more
doaj +1 more source
The effects of material combination and surface roughness in lubricated silicon nitride/steel rolling contact fatigue [PDF]
, 2003 Four kinds of commercially finished 12.7 min HIPed silicon nitride bearing balls with surface roughness values R-a ranging from 0.002 to 0.016 mum were tested using a four-ball rolling configuration.
Ahmed, R, Hadfield, M, Kang, J
core +1 more source
Scanning laser source and scanning laser detection techniques for different surface crack geometries [PDF]
, 2012 Standard test samples typically contain simulated defects such as slots machined normal to the surface. However, real defects will not always propagate in this manner; for example, rolling contact fatigue on rails propagates at around 25º to the surface,
Clough, A. R. +3 more
core +1 more source
Results in Materials, 2022 The key components of the automatic gun are subjected to the severe working condition of high temperature, transient state and continuous strong impact load in the shooting process, the surface of which using the alloy constructional steel is prone to ...
Dan Liu +6 more
doaj +1 more source
Ultrasonic surface rolling strengthening and its parameter optimization on bearing raceway
Materials & Design, 2023 For the first time, the ultrasonic surface rolling processing (USRP) technology was applied to a real bearing raceway, and a finite element simulation model for USRP on a bearing raceway was established.
Yongjie Cheng +5 more
doaj +1 more source
The measurement of lubricant-film thickness using ultrasound [PDF]
, 2003 Ultrasound is reflected from a liquid layer between two solid bodies. This reflection depends on the ultrasonic frequency, the acoustic properties of the liquid and solid, and the layer thickness.
Astridge D. G. +6 more
core +1 more source
Importance and applications of robotic and autonomous systems (RAS) in railway maintenance sector: a review [PDF]
, 2019 Maintenance, which is critical for safe, reliable, quality, and cost-effective service, plays a dominant role in the railway industry. Therefore, this paper examines the importance and applications of Robotic and Autonomous Systems (RAS) in railway ...
Ackerman +6 more
core +3 more sources
Journal of Materials Research and Technology, 2023 Static force, ultrasonic amplitude, feed rate, and rolling spacing parameters of 42CrMo steel treated by the ultrasonic surface rolling process (USRP) were optimized by the Grey-Taguchi method. Nine sets of experiments based on an orthogonal array design
Yuhui Yang +5 more
doaj +1 more source
Residual stress of as-deposited and rolled Wire + Arc Additive Manufacturing Ti–6Al–4V components [PDF]
, 2016 Wire + arc additive manufacturing components contain significant residual stresses, which manifest in distortion. High-pressure rolling was applied to each layer of a linear Ti–6Al–4V wire + arc additive manufacturing component in between deposition ...
Colegrove, Paul A. +8 more
core +1 more source
Active and passive compliant force control of ultrasonic surface rolling process on a curved surface
Chinese Journal of Aeronautics, 2022 Abstract Ultrasonic surface rolling process (USRP) is one of the effective mechanical surface enhancement techniques. During the USRP, unstable static force will easily do harm to the surface quality. In order to achieve a higher surface quality on the part with a curved surface, an active and passive compliant USRP system has been developed.
Kaiming ZHANG +4 more
openaire +1 more source