Results 131 to 140 of about 9,116 (296)

Probabilistic Life Assessment of Spherical Roller Bearings with Angular Misalignment

Lubricants
Angular misalignment of spherical roller bearings in wind turbine main shafts is a known cause of premature failure. Manufacturing and assembly tolerances introduce unavoidable variability in this misalignment—a source of uncertainty typically neglected ...
Joss Klausner Likibi, Baogang Wen, Xia Zhao, Zhange Zhang, Jingyu Zhai   +4 more
doaj   +1 more source

Detection of coupling misalignment by extended orbits

, 2015
In this paper a ‘SpectraQuest’ demonstrator is used to introduce misalignment into a rotating machinery set-up. Depending on the coupling used in the set-up, angular and/or parallel misalignment can be brought in the rotating system.
Verbelen, Florian, Bram Vervisch, Monte, Michael, Vervisch, Bram, Michael Monte, Florian Verbelen   +5 more
core   +1 more source

Site‐Specific Hydroxide Formation and Corrosion on Mg Nanocrystals

Advanced Science, EarlyView.
Using single‐crystalline Mg nanocrystals, this study uncovers the intrinsic corrosion initiation mechanism. The stability of the protective Mg(OH)2 film depends on its interfacial coherence with the Mg substrate. Corrosion initiates at exposed corners, where film coverage is incomplete.
Yao Liu, Zongmin Sun, Chenhao Wu, Kun Yang, Zhiyuan Ge, Chenyu Wang, Wenpei Gao, Jianbo Wu, Xiaoqin Zeng   +8 more
wiley   +1 more source

Self‐Powered Bearing Sensing and Real‐Time Fault Diagnosis Enabled by Non‐Invasive Triboelectric Sensors and Edge AI Acceleration

Advanced Science, EarlyView.
This study achieves the synergistic integration of self‐powered sensing and edge AI acceleration to establish a real‐time fault diagnosis system. The proposed TENG‐based self‐powered bearing sensor (NSE‐TBS) and FPGA‐accelerated edge AI framework fundamentally break through the inherent limitations of conventional monitoring systems, including complex ...
Kehui Zhu, Zhongheng Liu, Xinming Li, Jinrui Zhang, Meng Li, Yiming Guo, Lihua Han, Yanxue Wang   +7 more
wiley   +1 more source

ANALISA KARAKTERISTIK GETARAN KONDISI MISALIGNMENT PADA POROS TUNGGAL BERDASARKAN RESPON GETARAN

, 2017
Lebih dari 70% permasalahan yang terjadi pada mesin dan komponen berputar disebabkan oleh ketidaksesumbuan poros(misalignment).Misalignment adalah kondisi sumbu poros yang disambung bergeser saat mesin berputar.Misalignment akan memicu timbulnya ...
Suryono, Ahmad Fauzan, Suryadi, Dedi, SATRIYO, JOKO   +2 more
core  

Pengaruh Misalignment Terhadap Performansi Multimode Step-Index Plastic Optical Fiber (Msi-Pof) Pada Sistem Komunikasi Serat Optik [PDF]

, 2014
Proses penyambungan pada instalasi serat optik di dalam gedung atau di rumah terdapat kemungkinan terjadinya misalignment. Misalignment adalah suatu kondisi kedua ujung serat optik tidak tersambung sempurna.
Febriyanti, Renie
core  

Wireless, Adaptable and Fully Implantable Battery‐powered Devices for Optical Stimulation of the Spinal Cord in Small Rodents

Advanced Science, EarlyView.
Current technologies for spinal cord optogenetic stimulation rely on external power sources and face reliability constraints in freely behaving animals. Here, a fully implantable, battery‐powered optoelectronic device is introduced, enabling operation in any selected environment with wireless recharging for months‐long stimulation.
Shahriar Shalileh, Adan Moallemi, Elham Mohseni Vadeghani, Samuel Tretjakov, Brianna Tsuyuki, Alexander Golab, Benjamin Rever, Wolfram Tetzlaff, Dena Shahriari   +8 more
wiley   +1 more source

An Analysis on Negative Effects of Shaft Deflection on Angular Misalignment of Rollers Inside Tapered Roller Bearing

Lubricants
Shaft deflection degrades roller alignment and intensifies stress concentration/edge effects at roller-ends and raceway edges, ultimately compromising service performance of tapered roller bearings (TRBs).
Zhenghai Wu, Junmin Kang, Sier Deng
doaj   +1 more source

Coupled Vacancy and Phonon‐Scattering Engineering Drive Defect Evolution Toward Multifunctional High‐Performance Bi2Te3 Thermoelectrics

Advanced Science, EarlyView.
ZnSb reduces carrier concentration and suppresses Te volatilization, while Se substitution within QLs softens phonons and enhances anharmonicity. Swapped bilayers near twin boundaries strengthen phonon scattering and interlayer bonding. As a result, the optimal sample achieves an ultra‐high zT ∼1.51, cooling temperature difference of ∼70 K, power ...
Ruiheng Li, Minwen Yang, Huangshui Ma, Jie Zheng, Shengqiang Cui, Xiaobo Tan, Xuri Rao, Xiang An, Zongxiang Kan, Siqi Huo, Jing Shuai, Min Hong, Ran Ang   +12 more
wiley   +1 more source

TRIM: Simultaneous Thermometry, Ranging, and Imaging via a Monolithic Metalens

Advanced Science, EarlyView.
ABSTRACT While metasurfaces offer a pathway beyond the discrete architectures of conventional LWIR systems, physically fusing high‐precision thermometry and passive ranging onto a single metalens remains a formidable challenge. Here, we demonstrate a monolithic, dual‐focus metalens capable of simultaneous multidimensional sensing.
Man Yuan, Yuqing Zhang, Wangzhe Zhou, Zhaojian Zhang, Xiaoyun He, Xinpeng Jiang, Yiyi Li, Xin He, Jiagui Wu, Yuanmu Yang, Junbo Yang   +10 more
wiley   +1 more source