Results 1 to 10 of about 146,641 (261)
Journal of Materials Research and Technology, 2023 Tube-to-tubesheet joints play a crucial role in providing structural integrity to the shell and tube heat exchangers. This research investigated the combined effect of roller expansion percentages and grooves on the performance of expanded and welded ...
Dinu Thomas Thekkuden +2 more
exaly +3 more sources
Physics of notochord tube expansion in ascidians. [PDF]
Proc Natl Acad Sci U S AInteraction of cells and the surrounding lumen drives the formation of tubular system that plays the transport and exchange functions within an organism. The physical and biological mechanisms of lumen expansion have been explored. However, how cells communicate and coordinate with the surrounding lumen, leading to continuous tube expansion to a ...
Shi W +8 more
europepmc +3 more sources
Applied Sciences (Switzerland), 2018 In the expansion process of a fin-tube heat exchanger, the process variables and shape of the expansion ball affect the deformation of the tube’s inner grooves, the adhesion, and the expansion force.
Seonghun Park, Park Seonghun
exaly +3 more sources
Tube Drawing Process with Diameter Expansion for Effectively Reducing Thickness
Metals, 2020 The present paper describes a tube drawing method with diameter expansion, which is herein referred to as “expansion drawing”, for effectively producing thin-walled tube. In the proposed method, the tube end is flared by pushing a plug into the tube, and
Takashi Kuboki +2 more
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Rarefied, superorbital flows in an expansion tube [PDF]
International Journal of Numerical Methods for Heat and Fluid Flow, 2004 A free-piston driven expansion tube [X1 at the Centre for Hypersonics, University of Queensland] and its instrumentation is described. The facility was used to generate rarefied flows at speeds of approximately 10 km/s. Although the flow in the tube itself was in the continuum regime, rarefied flow conditions were achieved by allowing the flow at the ...
Vincent Wheatley, P A Jacobs
exaly +4 more sources
Mechanical behavior and energy absorption of expansion circular tube with negative Poisson’s ratio
AEJ - Alexandria Engineering JournalThe expansion tube plays a crucial role in the field of train collision safety protection. In this study, we combine the expansion characteristics of negative Poisson’s ratio (NPR) with the deformation mechanism of the expansion tube to propose a novel ...
Ruixian Qin, Bingzhi Chen, Xi Wang
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A new methodology for detecting adhesion location in aluminum tube expansion
Advances in Mechanical Engineering, 2017 During the expansion forming of aluminum tube, the efficiency of heat exchanger diminishes due to the adhesion of groove and expansion ball inside the tube.
Seonghun Park, Kwang-Hoon Kim
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The Fourier type expansions on tubes [PDF]
Complex 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
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Journal of Materials Research and Technology, 2022 Tube-to-tubesheet joints are one of the major vulnerable locations prone to cracks in heat exchangers. The manufacturing processes of these joints have an important role in providing structural integrity to the heat exchangers. The main objective of this
Dinu Thomas Thekkuden +5 more
doaj +1 more source
Structure parameter optimization and bearing limit analysis of the expansion unit of three-roller tube expander [PDF]
Royal Society Open Science, 2020 The critical technical issues for the structure design of three-roller tube expander were first studied and analysed in this paper. Then, the major design parameters of the expansion unit structure and the bearing limit of 12¼″ three-roller tube expander
Gang Bi +4 more
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