Results 51 to 60 of about 28,309 (205)

Calibration of Oil Film Thickness Acoustic Reflection Coefficient of Bearing under Multiple Temperature Conditions

Lubricants
Rolling mill bearings are prone to wear, erosion, and other damage characteristics due to prolonged exposure to rolling forces. Therefore, regular inspection of rolling mill bearings is necessary. Ultrasonic technology, due to its non-destructive nature,
Fei Shang, Bo Sun, Shaofeng Wang, Yongquan Han, Wenjing Liu, Ning Kong, Yuwu Ba, Fengchun Miao, Zhendong Liu   +8 more
doaj   +1 more source

Rock Crushing Analysis of TBM Disc Cutter Assisted by Ultra-High-Frequency Loading

Shock and Vibration, 2022
In the construction of mountain tunnels, the increasing proportion of hard rock stratum enhances the difficulty of rock breaking by tunnel boring machine (TBM). As a type of cyclic load with ultrahigh frequency, ultrasonic vibration has the advantages of
Dajun Zhao, Junpeng Han, Yu Zhou, Xiaoshu Lv, Shulei Zhang, Ke Gao, Yan Zhao   +6 more
doaj   +1 more source

STUDY ON PREDICTION MODEL OF SURFACE HARDNESS IN ULTRASOUND ROLLING EXTRUSION

Jixie qiangdu, 2020
Surface hardness is an important index for evaluating the quality of surface processing. Ultrasonic rolling and extrusion technology plays a very significant role in surface strengthening. Taking 42 CrMo bearing steel as the object,the range analysis was
WANG XiaoQiang, RUAN XiaoLin, CUI FengKui, LIU Fei   +3 more
doaj  

Comprehensive Estimation of Changes in the Microgeometry of Steel 45 by Ultrasonic Plastic Deformation with a Free Deforming Element

Metals, 2023
A method of ultrasonic surface plastic deformation is widely used to change the properties of the surface layers of metal products. Under the influence of this type of treatment, the structure of the material changes, microhardness increases, roughness ...
Dmitriy S. Fatyukhin, Ravil I. Nigmetzyanov, Vyacheslav M. Prikhodko, Aleksandr V. Sukhov, Sergey K. Sundukov   +4 more
doaj   +1 more source

Research on the Influence Law of Ultrasonic Rolling Passes on the Tension-Tension Fatigue Properties of AZ31B Magnesium Alloy [PDF]

Cailiao Baohu
In order to improve the fatigue performance of AZ31B magnesium alloy under high-stress levels and reveal the related mechanism，ultrasonic rolling process was used to roll it for different passes (2/4/6).Subsequently， the fatigue life， surface roughness ...
SUN Xingzi, LI Shunlong, CHEN Qingqiang, SUN Jie, QI Xinchun, LU Laixiao
doaj   +1 more source

A novel ultrasonic strain gauge for single-sided measurement of a local 3D strain field [PDF]

, 2014
A novel method is introduced for the measurement of a 3D strain field by exploiting the interaction between ultrasound waves and geometrical characteristics of the insonified specimen.
Allaer, Klaas, Degrieck, Joris, Kersemans, Mathias, Pyl, Lincy, Sol, Hugo, Van Den Abeele, Koen, Van Paepegem, Wim, Zastavnik, Filip   +7 more
core   +1 more source

Application of DAC function at the setting of conditional sensitivity of ultrasonic control of rolling stock parts with echo-pulse method

Вестник Научно-исследовательского института железнодорожного транспорта, 2017
The aim of the article is to develop a method for ultrasonic inspection of the rolling stock parts both in manufacturing tuning out the distance amplitude correction curve (DAC) when and in operation.
A. N. Kireev, V. A. Vitrenko
doaj   +1 more source

Ultrasonic assisted machining of gears with enhanced fatigue resistance: A comprehensive review

Advances in Mechanical Engineering, 2022
In recent years, ultrasonic-assisted machining (UAM) has been widely implemented to improve the performance and element quality of machined products.
Guangxi Li, Wenbo Bie, Bo Zhao, Fan Chen, Chongyang Zhao, Yuemin Zhang   +5 more
doaj   +1 more source

Experimental rig for measuring lubricant film thickness in rolling bearings [PDF]

, 2014
Electrical capacitance has been applied in the past for measuring the lubricant film thickness in rolling element bearings. The main difficulty arises from the fact that the measured capacitance is a combination of the capacitances of many rolling ...
Glovnea, Romeo, Jablonka, Karolina Anna, Zhang, Xingnan   +2 more
core   +1 more source

Gradient crystalline structure induced by ultrasonic impacting and rolling and its effect on fatigue behavior of TC11 titanium alloy

Results in Physics, 2017
Gradient crystalline structure in surface layer of TC11 titanium alloy was obtained through ultrasonic impacting and rolling process. Microstructure, work hardening state, residual stress distribution, and surface roughness in modified layer were ...
Xiaohui Zhao, Guilian Xue, Yu Liu
doaj   +1 more source