Results 71 to 80 of about 77,448 (312)

Ambient Stable Triboelectric Nanogenerator Based on Conductive Filler Modified Silicone Rubber with Gas Barrier Encapsulation for Footstep Energy Conversion

Advanced Science, EarlyView.
A humidity‐tolerant triboelectric nanogenerator is developed using conductive carbon black‐modified silicone rubber and a flame‐retardant gas barrier layer. The device efficiently harvests footstep energy while maintaining stable output under 30–90% RH and over 1 million cycles.
Yi Wei, Yushu Tian, Xiaokang Chen, Junfeng Chu, Junjie Wang, Xiangyu Chen, Wenjie Wu, Liqun Zhang   +7 more
wiley   +1 more source

In situ observation of rolling contact fatigue cracks by laminography using ultrabright synchrotron radiation

Fracture and Structural Integrity, 2015
In rolling contact fatigue (RCF), cracks usually initiate from inclusions beneath the surface and propagate to the contact surface. In the present study, synchrotron radiation computed laminography (SRCL) imaging was performed to observe flaking defects ...
Y. Nakai, D. Shiozawa, S. Kikuchi, K. Sato, T. Obama   +4 more
doaj  

Rolling contact fatigue calculation of a three-row roller pitch bearing in a wind turbine [PDF]

Wind Energy Science
Rolling contact fatigue calculations of wind turbine pitch bearings need to consider the oscillating operation and the complex dynamic load distribution in the bearing. The present work proposes a methodology to calculate the life of a pitch bearing that
O. Menck, F. Schleich, M. Stammler
doaj   +1 more source

Stress evaluations under rolling/sliding contacts [PDF]

The state of stress beneath traction drive type of contacts were analyzed. Computing stresses and stress reversals on various planes for points beneath the surface were examined.
Kannel, J. W., Tevaarwerk, J. L.
core   +1 more source

On the crack path of rolling contact fatigue cracks in a railway wheel steel [PDF]

, 2012
The objective of the present paper is to give some preliminary results obtained in the frame of a more wide investigation on the rolling contact fatigue (RCF) behavior of a railway wheel steel.
Cornacchia G., Faccoli M., Ghidini A., Roberti R.   +3 more
core  

A Microfiber‐Reinforced Janus Hydrogel E‐Skin With Recyclable Feature for Multimodal Sensing and Gender‐Specific Physiological Monitoring

Advanced Science, EarlyView.
Hydrogel‐based wearable electronics hold great promise for physiological monitoring in privacy‐sensitive regions. In this study, a polyurethane (PU) microfiber‐reinforced gelatin hydrogel e‐skin is developed, boasting multiple advantages such as ultra‐thinness, high toughness, and long‐term skin conformability.
Yarong Ding, Yufeng Li, Shaozhe Tan, Jiachun Sun, Xu Yang, Xuesi Zhang, Zhenhua Lin, Zhenyu Li, Yue Hao, Yannan Liu, Yingchun Li, Jingjing Chang   +11 more
wiley   +1 more source

RESEARCH ON THE CONTACT STRESS OF ROLLS AND FATIGUE DAMAGE DISTRIBUTION OF BACKUP ROLL IN FOUR HIGH PC MILL

Jixie qiangdu, 2020
The contact fatigue damage of the roll body caused by cyclic contact stress between rolls in four high mill will not only influence the wear of it,but also subsequent grinding and using life.
XU WenBo, QIN XiaoFeng, XU YingJie
doaj  

Study on the Performance of High-Speed Rail Damage of Four Different Materials

Advances in Materials Science and Engineering, 2018
For four types of railway rails, corresponding rolling tests have been executed by using the JD-1 wheel/rail simulation device based on the Hertz simulation method, which can ensure the reciprocal contact condition between simulation rail and wheel under
Jiajie Hu, Wen Zhong, Qiyue Liu
doaj   +1 more source

The effect of material defect orientation on rolling contact fatigue of a ball bearing. [PDF]

Sci Rep, 2023
Ghazanfari Holagh A, Alizadeh Kaklar J.
europepmc   +1 more source

Surface fatigue life of carburized and hardened M50NiL and AISI 9310 spur gears and rolling-contact test bars [PDF]

Spur gear endurance tests and rolling-element surface tests were conducted to investigate vacuum-induction-melted, vacuum-arc-melted (VIM-VAR) M50NiL steel for use as a gear steel in advanced aircraft applications, to determine its endurance ...
Bamberger, Eric N., Townsend, Dennis P.
core   +1 more source