Results 171 to 180 of about 2,753 (283)

Experimental study on the inhibitory effect of bolting position on crack propagation in cavity-containing sandstone. [PDF]

PLoS One
Zhu D, Zong YJ, Liu XF, Du B, Ding SX.
europepmc   +1 more source

Analysis of the Tightening Process of Bolted Joint with A Bolt Heater. (Effects of Thermal Resistance at Contact Surface).

TRANSACTIONS OF THE JAPAN SOCIETY OF MECHANICAL ENGINEERS Series A, 2000
FUKUOKA, Toshimichi, XU, Quantuo
openaire   +2 more sources

Structural capacity of precast concrete walls with openings: A parametric study on connection types and reinforcement ratios

Structural Concrete, EarlyView.
Abstract The structural role of precast concrete walls with openings is often overlooked in design practice due to concerns about reduced stiffness, stress concentration, cracking around openings, and potential unexpected failure modes under seismic loading.
Gonçalo Marreneca, Ricardo do Carmo, André Furtado   +2 more
wiley   +1 more source

Arc Resistance Enhancement of Converter Transformer Tank Through Structural Improvements: Simulation and Experimental Validation

High Voltage, EarlyView.
ABSTRACT Currently, limited research exists on the structural response and protection methods of the converter transformer tank for ± 800 kV ultra‐high voltage direct current transmission project to high energy arc faults. This research investigates the dynamic response and the vulnerable areas of the ultra‐high voltage converter transformer under the ...
Ke Wang, Shuqi Zhang, Yikun Zhao, Yichen Wang, Zongliang Zhang, Jinhua Zhang   +5 more
wiley   +1 more source

Morphological and genetic diversity of <i>Beta maritima</i> populations across Europe and North Africa: a comprehensive review. [PDF]

Front Plant Sci
Bertram L, Frisch M.
europepmc   +1 more source

Influence of Arc Faults on Pressure Production Characteristics in AC Turret of UHV Transformers

High Voltage, EarlyView.
ABSTRACT The overpressure caused by arc fault in the oil tank can lead to a transformer explosion. Since the AC turret of transformers serves to connect the transformer windings with the AC busbar, the arc current can be extremely high if an earth fault arc occurs leading to potentially hazardous pressure.
Yuhang Li, Yuanxiang Zhou, Guimin Jiang, Licheng Lu, Hongchuan Dong   +4 more
wiley   +1 more source

Dynamic Modal‐Based Vibration Characteristics Analysis and Looseness Fault Diagnosis in Transformer Winding

High Voltage, EarlyView.
ABSTRACT Limited by the theoretical basis and diagnostic methods, the winding mechanical condition monitoring often requires both normal condition vibration signals and present vibration signals, and the winding mechanical condition identification is completed by comparing with the normal condition signals.
Shuyu Wu, Chao Zhang, Fan Zhang, Shengchang Ji   +3 more
wiley   +1 more source

Experimental study on shear mechanical behavior of bolted rock joints and rock-bolt interaction mechanism. [PDF]

Sci Rep
Deng S, Sun Z, Zhu L, Zheng L, Lv M, Wang X, Wang C, Ma Z.   +7 more
europepmc   +1 more source

Riding Through Norms: Creating and Performing Athletic Femininity at American Ladies’ Equestrian Exhibitions, 1850–1890

Gender &History, EarlyView.
ABSTRACT During the nineteenth century, American agricultural fairs often featured ladies’ equestrian exhibitions. At these events, women constructed an athletic femininity based on skill and competitiveness that challenged traditional ideals of womanhood.
Gabrielle McCoy
wiley   +1 more source

School Board Elections in England and Wales, 1870–1902: An Electoral Experiment?

History, EarlyView.
Abstract The 1870 Elementary Education Act enabled the creation of school boards in England and Wales. Members were directly elected by the cumulative vote. This method gave each individual voter as many votes as there were seats on a school board, in some cases up to fifteen.
ED GREEN
wiley   +1 more source