Results 81 to 90 of about 25,453 (205)

INNOVATIVE TECHNOLOGIES OF THE METAL-PLATE SPRINGS PRODUCTION AND HARDENING

Литьë и металлургия, 2010
A methods and technology of the periodic rolling billets variable profile. Given schematic diagrams and technical specification of equipment for making plastic and surface treatment of small leaf springs and the guide bearings air suspension trucks.
V. V. Klubovich, V. A. Tomilo
doaj   +1 more source

Review and critical analysis: Rolling-element bearings for system life and reliability [PDF]

A ball and cylindrical roller bearing technical specification which incorporates the latest state-of-the-art advancements was prepared for the purpose of improving bearing reliability in U.S. Army aircraft. The current U.S.
Anderson, W. J., Derner, W. J., Irwin, A. S.   +2 more
core   +1 more source

Effect of ultrasonic surface rolling on surface characteristic of Mn13 high-Mn steel [PDF]

Journal of Physics: Conference Series, 2021
Lichao Gong, Yanjie Liu, Rongyu Ge, Zhenfeng Jiang, Xiuli Fu, Yongzhi Pan   +5 more
openaire   +1 more source

Research Status and Trend of M50 Bearing Steel Surface Strengthening Technology [PDF]

Cailiao Baohu
Bearings，regarded as the “heart” of aircraft engines，operate under extreme conditions involving high temperatures，high pressures，and high speeds，with fatigue being their primary failure mode.To enhance the performance of aerospace bearings and ...
ZHANG Hao, PAN Yongzhi, YANG Yanzhao, ZHUANG Qikai, LIANG Hao, MEN Xiuhua
doaj   +1 more source

Space fabrication demonstration system: Executive summary [PDF]

The results of analysis and tests conducted to define the basic 1-m beam configuration required, and the design, development, fabrication, and verification tests of the machine required to automatically produce these beams are ...

core   +1 more source

Some aspects of oil lubricant additivation with ZnO nanoparticles [PDF]

, 2006
This is a study on the tribological behaviour of ZnO nanoparticles as an additive in a polyalphaolefin (PAO6) and on the influence of dispersing agents (OL100 and OL300). Antiwear and extreme pressure tests were run on two four-ball machines. Firstly, it
Chou, R., Cuetos, J.M., Fernandez, J.E., Hernandez Battez, Antolin, Tucho, R.   +4 more
core  

Preparation and mechanical properties of LC cladding layer for friction parts

Frontiers in Mechanical Engineering
Introduction: In the actual engineering operation, there are some components facing high frequency friction, which have high damage rate and poor direct replacement benefit.
Lingbo Jiang
doaj   +1 more source

Mathematical Modeling and Finite Element Analysis of Residual Stress (RS) Field after Multipass Ultrasonic Surface Rolling

Advances in Materials Science and Engineering
In order to achieve the change rule of the induced residual stress (RS) field after multipass ultrasonic surface rolling (USR), a mathematical model of the induced residual stress (RS) field after multipass ultrasonic surface rolling is first established.
Jinggan Shao, Zhanshu He, Genshang Wu, Zhi Zhang, Chao Li   +4 more
doaj   +1 more source

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

, 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.
Hadfield, M, Kang, J
core  

Nonterrestrial utilization of materials: Automated space manufacturing facility [PDF]

, 1982
Four areas related to the nonterrestrial use of materials are included: (1) material resources needed for feedstock in an orbital manufacturing facility, (2) required initial components of a nonterrestrial manufacturing facility, (3) growth and ...

core   +1 more source