Results 31 to 40 of about 1,077,007 (312)

Evaluation of the wear of the duckfoot sweep cultivator blades and the technology of their hardening

Проблеми трибології, 2021
In recent years, research and developments related to the creation of new areas using nanotechnology take a special place in scientific achievements.
T.S. Skoblo, O.V. Nanka, O.V. Saychuk
doaj   +1 more source

Comparative analysis of the combined effect of input parameters on heat input and heat affected zone in TIG welding

Nigerian Journal of Technology, 2022
The quality and integrity of welded joints is highly influenced by the optimal combination of the welding input parameters. Due to the rapidly changing scenario in the manufacturing industry, optimization of process parameters is essential for a manufacturing unit to respond effectively to the severe competitiveness and increasing demand for quality ...
Uwoghiren, F.O., Erhunmwunse, B.O.
openaire   +2 more sources

On the Effect of Heat Input and Interpass Temperature on the Performance of Inconel 625 Alloy Deposited Using Wire Arc Additive Manufacturing–Cold Metal Transfer Process

Metals, 2021
Relatively high heat input and heat accumulation are treated as critical challenges to affect the qualities and performances of components fabricated by wire arc additive manufacturing (WAAM). In this study, various heat inputs, namely 276, 552 and 828 J/
Chengxun Zhang, Zhijun Qiu, Hanliang Zhu, Zhiyang Wang, Ondrej Muránsky, Mihail Ionescu, Zengxi Pan, Jiangtao Xi, Huijun Li   +8 more
doaj   +1 more source

Microstructural Organization and Mechanical Properties of 5356 Aluminum Alloy Wire Arc Additive Manufacturing Under Low Heat Input Conditions

Metals
This study examines the microstructure and mechanical properties of 5356 aluminum alloy under low heat input conditions during arc additive manufacturing, focusing on the challenges posed by excessive heat input, which hinders specimen formation and ...
Xiaogang Zuo, Zhimin Lv, Yuejie Wang, Xiaokang Chen, Wenjun Qi   +4 more
doaj   +1 more source

Effect of heat input on the microstructure and impact toughness of submerged arc weld metal for high-performance weathering steel

Materials Research Express, 2023
This study aims to elucidate the appropriate heat input ( E _j ) range for submerged arc welding (SAW) of high-performance weathering steel. Generally, by increasing E _j , the welding efficiency can be improved, but the toughness of the weld metal may ...
Fangmin Li, Jinjian Li, Bing Hu, Yuzhu Yi, Qiuming Wang, Qingfeng Wang   +5 more
doaj   +1 more source

Mathematical model of heat pump [PDF]

, 2015
In this paper different energy states of a heat pump are described. Equations used for mathematical description of the heat pump in the Matlab Simulink are presented.
Pitron, J.
core  

Nonlinear analysis of spacecraft thermal models [PDF]

, 2010
We study the differential equations of lumped-parameter models of spacecraft thermal control. Firstly, we consider a satellite model consisting of two isothermal parts (nodes): an outer part that absorbs heat from the environment as radiation of various ...
A. Berman, A.A. Andronov, A.H. Nayfeh, A.H. Nayfeh, C. Arduini, C.A. Wingate, C.J. Savage, F. Kreith, H.B. Callen, I. Pérez-Grande, I. Shafarevich, J. Gaite, J. Guckenheimer, J. Hymers, J.-P. Tignol, J.-R. Tsai, José Gaite, M. Hazewinkel, M.A. Gadalla, M.W. Hirsch, P.G. Drazin, R.A. Henderson, V.I. Arnold, W. Hurewicz   +23 more
core   +1 more source

The role and implications of mammalian cellular circadian entrainment

FEBS Letters, EarlyView.
At their most fundamental level, mammalian circadian rhythms occur inside every individual cell. To tell the correct time, cells must align (or ‘entrain’) their circadian rhythm to the external environment. In this review, we highlight how cells entrain to the major circadian cues of light, feeding and temperature, and the implications this has for our
Priya Crosby
wiley   +1 more source

Assessment of the Heat Input Effect on the Distribution of Temperature Cycles in the HAZ of S460MC Welds in MAG Welding

Metals, 2021
Temperature cycles generated during welding have a significant effect on the changes in the HAZ of welds, regardless of whether these are changes in structure or mechanical properties; however, it is problematic to obtain temperature cycles with ...
Jaromír Moravec, Martin Švec, Šárka Bukovská, Jiří Sobotka   +3 more
doaj   +1 more source

Protein pyrophosphorylation by inositol pyrophosphates — detection, function, and regulation

FEBS Letters, EarlyView.
Protein pyrophosphorylation is an unusual signaling mechanism that was discovered two decades ago. It can be driven by inositol pyrophosphate messengers and influences various cellular processes. Herein, we summarize the research progress and challenges of this field, covering pathways found to be regulated by this posttranslational modification as ...
Sarah Lampe, Tanmay Kumar Mohanty, Rashna Bhandari, Dorothea Fiedler   +3 more
wiley   +1 more source