Results 51 to 60 of about 9,476,674 (192)

Predicting weld distortion in the design of automotive components [PDF]

, 2007
This project was set up in order to investigate whether it may be valid to use a simplified approach to weld distortion prediction in order to make an assessment of the distortions occurring in a welded structure.
O'Brien, Roger William
core  

Distortion product otoacoustic emissions: challenging existing theory

, 2010
Distortion product otoacoustic emissions (DPOAE or DP) are generated using two primary tones at frequencies f1 and f2 at levels L1 and L2; the two most prominent DP are cubic distortion products at the frequencies 2f1f2 and 2f2f1.
Perdue, Richard John
core   +1 more source

Modelling distortion reduction on pre- and post-weld rolled gas metal arc welded plates [PDF]

, 2011
Residual stress generated during welding can cause distortion, especially when appliedon relatively thin plates. There are several standard and well documented techniquesto reduce distortion and residual stress after welding, however these techniques ...
Colegrove, Paul A., Wen, S. W., Coules, Harry E., Cozzolino, Luis D.   +3 more
core   +5 more sources

Study on the Effects of Inflow Conditions on the Inlet Performance of a Dorsal S-Shaped Inlet

Aerospace
As an important aerodynamic configuration of the new-generation UAV, the dorsal S-shaped inlet’s performance is affected by the complex coupling of inflow conditions and the boundary layer ingestion effect.
Meng Cao, Daxin Liao, Hexiang Wang, Neng Xiong, Fangji Li, Dawei Liu, Ce Zhang, Jie Chen, Yang Tao   +8 more
doaj   +1 more source

Investigation of Flow Control in an Ultra-Compact Serpentine Inlet with Fluidic Oscillators

Aerospace
For optimal aerodynamic efficiency of specific ultra-compact serpentine intake, fluid oscillators are utilized to regulate airflow. This study employs advanced numerical simulation techniques to examine the effects of various control positions, jet ...
Lei Liu, Maolong Bai, Zhihao Wang, Zhengkang Lin, Kun Wang, Huijun Tan, Ziyun Wang   +6 more
doaj   +1 more source

Numerical simulations of an intake-compressor system

Journal of the Global Power and Propulsion Society, 2018
Integrated propulsion plays a major role in future civil and military aircraft design. A key component of these systems are highly bent intake geometries.
Thomas Kächele, Rudolf P. M. Rademakers, Tim Schneinder, Reinhard Niehuis   +3 more
doaj   +1 more source

Numerical Simulations Study on the Effect of Propeller Slipstream on Inlet Flow Field for a Turboprop Aircraft

Hangkong gongcheng jinzhan, 2020
The accelerating effect, viscous effect, and rotating effect of the propeller slipstream are of significant influences on the performance of the inlet.
WANG Limin, ZHANG Yanjun
doaj   +1 more source

Influence of Propeller Slipstream on the Flow Field of S-Shaped Intake

International Journal of Aerospace Engineering, 2021
For turboprop engine, the S-shaped intake affects the engine performance and the propeller is not far in front of the inlet of the S-shaped intake, so the slipstream inevitably affects the flow field in the S-shaped intake and the engine performance ...
Shuili Ren, Peiqing Liu
doaj   +1 more source

Total harmonic distortion: In-situ diagnostics of pressure fluctuations for anion exchange membrane water electrolysis

Electrochemistry Communications
In this study, total harmonic distortion (THD) spectroscopy combined with electrochemical impedance spectroscopy(EIS) was employed to systematically investigate the pressure-dependent frequency response behavior of the anode and cathode in an anion ...
Dong Yunze, Mao Qing, Liu Min, Wu Qiliang   +3 more
doaj   +1 more source

Numerical Study on the Aerodynamic Performance of a UAV S-Shaped Inlet with Grilles

Aerospace
This investigation designs grilles of two configurations inside an S-shaped inlet for UAVs. The present work numerically investigates the effects of the configurations, numbers, diameters, and lengths of the grilles on the inlet aerodynamic performance ...
Shu Yang, Mingshuang Shi, Dongpo Li, Zhenlong Wu, Huijun Tan, Jiahao Ren, Liming Yang   +6 more
doaj   +1 more source