Results 151 to 160 of about 28,309 (205)

ULTRASONIC NONLINEARITY MEASUREMENTS ON ROLLED POLYCRYSTALLINE COPPER

AIP Conference Proceedings, 2010
Changes in the ultrasonic nonlinearity parameter, β, have been attributed to changes in dislocation density. This sensitivity suggests future applications in nondestructive testing. In this work, the change in β in rolled polycrystalline copper is examined.
A. A. Zinck, S. Krishnaswamy, Donald O. Thompson, Dale E. Chimenti   +3 more
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Investigation on Dynamics of Ultrasonic Surface Rolling Process

Advanced Materials Research, 2013
Ultrasonic surface rolling processing (USRP) is a surface nanocrystallization method developed recently, which can bring metal surface with superior properties. In order to obtain the motion state of the processing tip during USRP, a 3D dynamic finite element model was adopted to simulate the response of processing tip.
Xiao Hui Zhao, Yu Liu
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Finite element modeling of ultrasonic surface rolling process

Journal of Materials Processing Technology, 2011
Abstract Ultrasonic surface rolling (USRP) is a newly developed process in which ultrasonic vibration and static force are applied on work-piece surface through the USRP operator to generate a nanostructured surface layer with mechanical behaviors highly improved.
Yu Liu, Lijun Wang, Dongpo Wang
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Experimental investigation on ultrasonic surface rolling of Inconel 690TT

Materials and Manufacturing Processes, 2021
Inconel 690TT has an excellent high-temperature corrosion resistance and has been widely applied in steam generators of pressurized water reactor (PWR) nuclear power plants.
Junbiao Liu, Xuehui Zhang, Ziyi Cui, Jiatian Yu, Jiang Liu, Yangjun Zou, Tongxiang Liang   +6 more
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Microstructural evolution mechanisms in rolled 17-4PH steel processed by ultrasonic surface rolling process

Materials Science and Engineering: A, 2020
Abstract The surface of rolled 17-4 precipitation-hardening steel was subjected to the ultrasonic surface rolling process technique at room temperature. Microstructural evolution mechanisms and its intrinsic relation with processing history, namely formation process and heat treatment, were systematically analyzed via high-resolution transmission ...
Dan Liu, Daoxin Liu, Xiaohua Zhang, Amin Ma, Chengsong Liu   +4 more
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Design and Simulation Analysis of Ultrasonic Rolling Horn

Applied Mechanics and Materials, 2015
Considering its important influence on ultrasonic burnishing, ultrasonic horn is the research object in this paper. Take theoretical design of it firstly, then build 3d model by ANSYS11.0 and carry out modal analysis and harmonic response analysis of it.
Le Ping Liu, Yu An Peng, Ya Jun Yan, Qun Qun Gao   +3 more
openaire   +1 more source

Effect of ultrasonic peening technology on the thermal fatigue of rolling mill rolls

The International Journal of Advanced Manufacturing Technology, 2017
In this study, the use of ultrasonic peening technology (UPT) on the rolling mill roll graphite steel GSH48 was surveyed in order to improve some surface mechanical and thermal properties. UPT is one of the newest technologies of severe plastic deformation in which vibratory tool strikes the workpiece surface with continual reciprocating motions ...
Alireza Abbasi, Saeid Amini, Ghanbar Ali Sheikhzadeh   +2 more
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Characterization of Rolling Texture by Ultrasonic Dispersion Measurement

1989
Ultrasonic scattering at grain boundaries in polycrystals causes attenuation of sound waves and dispersive sound velocities. Texture, that is a weighted orientation distribution of the grains, alters the ultrasonic propagation behavior directional dependent.
S. Hirsekorn, E. Schneider
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Ultrasonic evaluation of residual stresses in rolled aluminum plate

AIP Conference Proceedings, 1999
The LCR ultrasonic technique has shown an ability to distinguish between three aluminum plates furnished by Kaiser Aluminum. The 1.22×1.19 m(48×47 in) plates are 19 mm (0.75 inch) thick, but differ in heat treatment and rolling conditions. One is fully annealed (O temper), the second was heat-treated to T651 temper, and the third is a stress relieved ...
Don E. Bray, Seon-Jin Kim, Micky Fernandes   +2 more
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Experimental study of GCr15 steel in ultrasonic rolling process

Australian Journal of Mechanical Engineering, 2020
To improve the surface quality of GCr15 steel parts, research on GCr15 steel strengthening is of great significance.
Hongyu Xu, Guolin Yao, Xiaoqiang Wang, Libo Liu, Yanyi Huang   +4 more
openaire   +1 more source