Results 11 to 20 of about 319,421 (283)

Rolling contact fatigue of silicon nitride. [PDF]

open access: yes
Silicon Nitride has traditionally been used as rolling contact bearing material owing to its superior performance compared to bearing steels. Its successful application as a bearing element has led to the development of Silicon Nitride in other rolling ...
Wang, W.
core   +9 more sources

Comparison of 4-ball and 5-ball rolling contact fatigue tests on lubricated Si3N4/steel contact [PDF]

open access: yes, 2003
Accelerated four-ball and five-ball rolling tests were performed on HIPed Si3N4 ball samples (rough lapped with surface roughness value Ra0.08 μm and Rq0.118 μm) in fully lubricated condition.
Kang, J, Hadfield, M
core   +6 more sources

Some problems in hot rolling of al-alloys solved by the finite element method [PDF]

open access: yes
This thesis is focused on employing the finite element method (FEM) to simulate hot flat rolling process. The relevant work involves selecting a suitable constitutive equation, predicting the rolling load and roll torque, computing temperature changes ...
Duan, X.
core   +9 more sources

Roll On - Roll Off [PDF]

open access: yes, 2021
<p>During the final months of 2011 the New Zealand government revisited a 50 year old proposal to move the inter-island ferry terminal, currently located in Picton, to a site bordering on both Lake Grassmere and the Clifford Bay coastline. This thesis is based around the design of the new terminal facilities.The primary goal of this research is ...
openaire   +1 more source

Contact Pressure Measurement System in Cross Wedge Rolling [PDF]

open access: yes, 2010
In the cross wedge rolling process (CWR), plastic deformation is geared by a driving torque transmitted by friction on die surface. Friction plays a role which has to be further identified in this metal forming process. The local contact pressure between
MANGIN, Philippe   +2 more
core   +1 more source

Unified Principal S–N Equation for Friction Stir Welding of 5083 and 6061 Aluminum Alloys

open access: yesChinese Journal of Mechanical Engineering, 2021
With the popularization of friction stir welding (FSW), 5083-H321 and 6061-T6 aluminum alloy materials are widely used during the FSW process. In this study, the fatigue life of friction stir welding with two materials, i.e., 5083-H321 and 6061-T6 ...
Xiangwei Li, Ji Fang, Xiaoli Guan
doaj   +1 more source

Roll, roll, roll me away [PDF]

open access: yesCanadian Medical Association Journal, 2013
When Shelley Stoddart applied for a nursing position with the mobile eye care clinic run by CNIB, there was one job requirement she didn’t understand: the need for an AZ license. So she called her father. “When he heard, he said: ‘You’re going to have to become a truck driver’.”
openaire   +1 more source

Optimization of damping effect for the air spring by the frequency dependent orifice

open access: yesMechanical Engineering Journal, 2017
This study proposes a newly developed structure for a frequency-dependent orifice for an air spring of a passenger train vehicle. This frequency-dependent orifice reduced both the rolling motion and the vertical vibration at high frequency.
Yuichiro TAKINO   +5 more
doaj   +1 more source

A Locating Approach for Small-Sized Components of Railway Catenary Based on Improved YOLO With Asymmetrically Effective Decoupled Head

open access: yesIEEE Access, 2023
In the routine inspection process of railway catenary systems, the primary task is to find out the locations of various components accurately. The complex composition of the components in the catenary system and their large dimensional differences make ...
Shuai Xu   +7 more
doaj   +1 more source

Stator ITSC Fault Diagnosis for EMU Induction Traction Motor Based on Goertzel Algorithm and Random Forest

open access: yesEnergies, 2023
The stator winding insulation system is the most critical and weakest part of the EMU’s (electric multiple unit’s) traction motor. The effective diagnosis for stator ITSC (inter-turn short-circuit) faults can prevent a fault from expanding into phase-to ...
Jie Ma   +7 more
doaj   +1 more source

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