Results 221 to 230 of about 34,568 (304)

From microgravity to hypergravity: Perspectives on circulatory adaptation through multiscale modelling

The Journal of Physiology, EarlyView.
Dario Collia, Luigino Zovatto, Gianni Pedrizzetti   +2 more
wiley   +1 more source

Acute Preload Effects of Furosemide

Chest, 1990
Acute preload effects (as reflected by the pulmonary capillary wedge pressure [PCWP]) of an intravenous furosemide bolus were studied in 33 patients. In those patients receiving no vasoactive drug and in those receiving predominantly preload reducing agents, there was an initial rise in PCWP up until 15 minutes followed by a diuresis-induced fall in ...
Kraus, P. A., Lipman, J., Becker, P. J.
openaire   +6 more sources

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Bolt preload monitoring based on percussion sound signal and convolutional neural network (CNN)

Nondestructive Testing and Evaluation, 2022
The general approach to percussion-based monitoring of bolt preload is to train a classifier model to map the preloads and acoustic characteristics of percussion signals.
Zhuodong Yang, L. Huo
semanticscholar   +1 more source

Research Development of Preload Technology on Angular Contact Ball Bearing of High Speed Spindle: A Review

International Journal of Precision Engineering and Manufacturing, 2020
Te Li, Petr Kolar
exaly   +2 more sources

Preload monitoring of single nut ball screws based on sensor fusion

, 2021
Unplanned machine downtimes lead to higher costs through reduced productivity. Machine availability is amongst others limited by the failure of wear-induced preload loss of ball screws. Therefore, attempts are made to monitor the preload.
B. Denkena, B. Bergmann, A. Schmidt
semanticscholar   +1 more source

Experimental study on behavior of time-related preload relaxation for bolted joints subjected to vibration in different directions

Tribology International, 2020
The effect of preload relaxation caused by the mechanical vibration on loosening of bolted joints with self-locking capability has been widely observed.
Ying Li, Zhifeng Liu, Yuezhen Wang, L. Cai, Mingpo Zheng   +4 more
semanticscholar   +1 more source

An experimental investigation on interfacial behavior and preload response of composite bolted interference-fit joints under assembly and thermal conditions

, 2020
This paper reports an experimental study on interfacial behavior and preload response of composite bolted interference-fit joints under assembly and thermal conditions.
Junshan Hu, Kaifu Zhang, Hui Cheng, Z. Qi   +3 more
semanticscholar   +1 more source

Influence of creep on preload relaxation of bolted composite joints: Modeling and numerical simulation

, 2020
Preload relaxation can greatly influence the durability of bolted composite joints. This paper focuses on the effects of material creep and contact creep between rough surfaces on preload relaxation.
Yuanhong Xie, Yi Xiao, J. Lv, Zhen Zhang, Yueting Zhou, Y. Xue   +5 more
semanticscholar   +1 more source

A shape factor based ultrasonic measurement method for determination of bolt preload

, 2020
The existing ultrasonic testing models cannot accurately measure bolt preload due to the non-uniform distribution of axial stress in the effective stressed region of bolt and cannot rapidly complete the calibration of detection coefficients due to the ...
Q. Pan, Ruipeng Pan, Meile Chang, Xiaoyu Xu   +3 more
semanticscholar   +1 more source

Bolt preload measurement based on the acoustoelastic effect using smart piezoelectric bolt

Smart materials and structures (Print), 2019
Precise measurement of bolt preload force is particularly important in the assembly process of aviation equipment, which is directly related to the normal working performance and indicators of the equipment.
Q. Sun, Bo Yuan, Xiaokai Mu, Wei Sun
semanticscholar   +1 more source