Results 31 to 40 of about 34,934 (272)

Time-Varying Meshing Stiffness Calculation and Dynamics Simulation of Multi-Spalling Gear

Machines
Spalling alters a gear’s time-varying meshing stiffness (TVMS), thereby affecting its vibration characteristics. However, most studies focus on single-spalling gears and overlook the possibility of multi-spalling gears.
Xiangxi Kong, Ye Yuan, Shuai Sun, Yi Xin, Qiang Meng   +4 more
doaj   +1 more source

Planetary rock-breaking bodies and horizontal drilling

Известия высших учебных заведений: Геология и разведка, 2023
Background. The article considers one of the variants of the original planetary drilling organ, in which used multiple impacts on the mass to be destroyed.
V. L. Skripka, L. H. Minyazeva
doaj   +1 more source

Structural Performance of Short Square Self Compacting Concrete Columns in Fire [PDF]

Engineering and Technology Journal, 2015
This paper represents an experimental program on the behavior of SCC columns under fire. The research includes testing reinforced SCC columns subjected to various loading levels and heating rates.
Mohammed Mansour Kadhum Alkafaji
doaj   +1 more source

Stress Analysis and Spalling Failure Simulation on Surrounding Rock of Deep Arch Tunnel

Applied Sciences, 2023
To study the stress distribution characteristics of surrounding rock and the spalling mechanism of deep hard rock tunnels with different arch heights, the complex variable function and angle-preserving transformation method in elasticity theory were ...
Kang Peng, Guansheng Yi, Song Luo, Xuefeng Si   +3 more
doaj   +1 more source

Effect of water vapor on the spallation of thermal barrier coating systems during laboratory cyclic oxidation testing. [PDF]

, 2009
The effect of water and water vapor on the lifetime of Ni-based superalloy samples coated with a typical thermal barrier coating system—b-(Ni,Pt)Al bond coat and yttria stabilized zirconia (YSZ) top coat deposited by electron beam physical vapor ...
AG Evans, BA Pint, CT Liu, D Renusch, D. Monceau, EP George, GL Chen, H-E Zschau, JL Smialek, JL Smialek, JL Smialek, M Rudolphi, R Janakiraman, RT Wu, S. Hervier, T Takasugi, V Sergo, V Tolpygo, V. Déneux, Y. Cadoret, Z-Y Deng, Z-Y Deng, Z-Y Deng   +22 more
core   +3 more sources

Two-Step Approach Using Degradable Magnesium to Inhibit Surface Biofilm and Subsequently Kill Planktonic Bacteria

Biomedicines, 2021
Bacterial infection remains a great risk in medical implantation surgery. In this paper, we found that degradable metals may be a feasible alternative option of antibacterial implantation materials.
Pei-Chun Wong, Ren-Yi Wang, Long-Sheng Lu, Wei-Ru Wang, Jason Shian-Ching Jang, Jia-Lin Wu, Tai-Yuan Su, Ling-Hua Chang   +7 more
doaj   +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

Substrate Effect on the High Temperature Oxidation Behavior of a Pt-modified Aluminide Coating. Part II: Long-term Cyclic-oxidation Tests at 1,050 C [PDF]

, 2007
This second part of a two-part study is devoted to the effect of the substrate on the long-term, cyclic-oxidation behavior at 1,050 C of RT22 industrial coating deposited on three Ni-base superalloys (CMSX-4, SCB, and IN792).
B. A. Pint, B. Gleeson, C. C. Jia, D. Oquab, Daniel Monceau, F. A. Golightly, G. Fisher, G. M. Kim, H. E. Evans, H. Hindam, H. M. Hindam, J. Angenete, J. C. Yang, J. D. Kuenzly, J. L. Smialek, J. M. N’Gandu Muamba, L. Rivoaland, M. Bobeth, M. W. Brumm, N. Vialas, Nadia Vialas, V. K. Tolpygo, Y. Zhang   +22 more
core   +3 more sources

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

Computational model of spalling and effective fibers on toughening in fiber reinforced composites at an early stage of crack formation

Latin American Journal of Solids and Structures
This work suggests a computational model that takes account of effective fibers on toughening in FRC at an early stage of crack formation. We derived the distribution of pressure provoked by a random inclined fiber in the matrix and calculated stresses ...
Chong Wang, Leandro Ferreira Friedrich
doaj   +1 more source