Results 1 to 10 of about 100,508 (168)

Behaviour of expansion tubes under impact load: Deformation mode and mechanical response

open access: yesMaterials & Design, 2023
The expansion tube is a promising energy absorption structure in spacecraft and airplanes, where it is often exposed to impact stress. Despite prior studies on the deformation mode of expansion tubes have been conducted, the majority of them have relied ...
Zizhen Qi   +5 more
doaj   +3 more sources

Dynamic Response and Energy Absorption Characteristics of Expansion Tubes Under Axial Impact

open access: yesIEEE Access, 2020
The expansion tube is normally used in impact-resistant components, owing to the stable expansion force, and high specific energy-absorption capacity. This paper reports the deformation mechanism and energy absorption characteristics of expansion tube ...
Zizhen Qi   +4 more
doaj   +3 more sources

The Fourier type expansions on tubes [PDF]

open access: yesComplex Variables and Elliptic Equations, 2020
In view of recent developments of the study of reproducing kernel Hilbert spaces, in particular with the context the Hardy spaces on tubes, aspects of rational approximation for functions of finite energy in several complex and several real variables are developed.
Mai, Weixiong, Qian, Tao
openaire   +2 more sources

Analysis on Corrosion Failure of Air Cooler of Hot Low - Pressure Separator for Diesel Upgrading Unit [PDF]

open access: yesCailiao Baohu, 2022
The spiral heat exchange tube made by 15CrMo stainless steel suffered from obvious leakage failure during service period at the air cooler of hot low - pressure separator for diesel upgrading unit.
ZHANG Dongling, LIU Bingyan, YAN Zhenxing, WANG Lida, NIU Xing, HAO Anfeng, LIU Guichang
doaj   +1 more source

Experimental Investigations of Expansion Strength of Hydraulic Expansion Joints Interconnecting Tube and Fins Heat Exchanger

open access: yesMetals, 2022
As a high expansion strength corresponds to a high heat transfer efficiency, this study investigated the expansion strength of an air-conditioning heat exchanger jointed by hydraulic expansion.
Haimei Han   +3 more
doaj   +1 more source

Study of Tube Pretension Effects on the Strength of the Flat-Round Tubesheet in a Quench Boiler

open access: yesChemEngineering, 2022
A quench boiler is the key equipment in ethylene production for the rapid cooling of high-temperature cracking gas. In the boiler, heat transfer is occurs between the hot cracking gas passing through the inner heat exchange tubes with an average ...
Guangrui Zhao   +4 more
doaj   +1 more source

Effect of Tube Expansion on Heat Transfer and Pressure Drop Characteristics During Condensation in Micro-Fin Tubes

open access: yesFrontiers in Energy Research, 2021
Despite of the large number of research dedicated to condensation heat transfer and pressure drop characteristics in pristine micro-fin tubes, experimental investigation on effects of tube expansion have not been reported in the open literature.
Na Liu, Qian Zhao, Zhixiang Lan
doaj   +1 more source

The proteolysis of ZP proteins is essential to control cell membrane structure and integrity of developing tracheal tubes in Drosophila

open access: yeseLife, 2023
Membrane expansion integrates multiple forces to mediate precise tube growth and network formation. Defects lead to deformations, as found in diseases such as polycystic kidney diseases, aortic aneurysms, stenosis, and tortuosity.
Leonard Drees   +4 more
doaj   +1 more source

Effect of post-heat-treatment on thermal and physical characteristics of NiTi tubes produced via conventional drawing and laser powder bed fusion

open access: yesJournal of Materials Research and Technology, 2023
NiTi is one the metal alloys exhibiting shape memory and superelasticity which makes it suitable for a wide range of engineering and biomedical applications.
Lehar Asip Khan   +4 more
doaj   +1 more source

Effect of structural parameters and materials choice on the mechanical characteristics of expansion tubes

open access: yesAIP Advances, 2020
An expansion tube is an ideal energy absorber which dissipates kinetic energy through plastic deformation and friction. There is an urgent need to understand the influence of key parameters such as the semi-angle, tube material, and friction coefficient ...
Zizhen Qi, Yuwu Zhang, Yuliang Lin
doaj   +1 more source

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