The phase shift of an ultrasonic pulse at an oil layer and determination of film thickness [PDF]
, 2005 An ultrasonic pulse incident on a lubricating oil film in a machine element will be partially reflected and partially transmitted. The proportion of the wave amplitude reflected, termed the reflection coefficient, depends on the film thickness and the ...
Astridge D. G. +4 more
core +1 more source
International Journal of Lightweight Materials and Manufacture, 2020 Ultrasonic nanocrystalline surface modification (UNSM) is state-of-art surface modification technique in which both the static and dynamic loads are contributed in work hardening of surface layer and amount of residual stress.
Mohsen Razi +2 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
Enabling internal electronic circuitry within additively manufactured metal structures - The effect and importance of inter-laminar topography [PDF]
, 2018 Purpose: This paper aims to explore the potential of ultrasonic additive manufacturing (UAM) to incorporate the direct printing of electrical materials and arrangements (conductors and insulators) at the interlaminar interface of parts during manufacture
Friel, RJ +4 more
core +1 more source
Improving Linear Weld Density in Ultrasonically Consolidated Parts [PDF]
, 2006 Ultrasonic consolidation is a novel additive manufacturing process with immense potential for fabrication of complex shaped three-dimensional metallic objects from metal foils.
George, J. +4 more
core +1 more source
Improving fatigue performance of surface-damaged Ti-6Al-4V alloy via ultrasonic surface rolling process [PDF]
MATEC Web of Conferences, 2020 Surface damages caused by markings, like laser marking and mechanical marking are detrimental to the fatigue performance of the components. To improve the fatigue performance of laser marked or mechanical marked Ti-6Al-4V alloy, ultrasonic surface rolling process (USRP) was performed on Ti-6Al-4V alloy prior to marking.
Ao Ni, Liu Daoxin, Zhang Xiaohua
openaire +2 more sources
Oil film measurement in polytetrafluoroethylene-faced thrust pad bearings for hydrogenerator applications [PDF]
, 2006 There is a growing trend in the replacement of the babbit facing in thrust pad bearings with a composite polytetrafluoroethylene (PTFE) surface layer. The PTFE-faced bearings have been shown to allow a greater specific pressure, reduce thermal crowning ...
Drinkwater, B.W. +3 more
core +1 more source
Effect of ultrasonic rolling on local corrosion induced by second phase of 6061 aluminum alloy
Cailiao gongcheng, 2023 USRP (ultrasonic surface rolling processing) was used to change the surface layer of 6061 aluminum alloy, so as to realize the change of the second phase microstructure of 6061 aluminum alloy by USRP under different static pressure conditions to improve ...
FAN Lei +8 more
doaj +1 more source
Materials Research, 2023 Nano-surface layers were prepared on the surface of 6061 aluminum alloy using the ultrasonic surface rolling process (USRP). The surface morphology, surface roughness, microstructure, hardness, and corrosion resistance of 6061 aluminum alloy were systematically characterized using X-ray diffraction (XRD), laser scanning confocal microscopy (LSCM ...
Xiquan Ma +8 more
openaire +3 more sources