Results 1 to 10 of about 146,646 (262)
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 +3 more
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Applied Sciences, 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.
Changwan Han +3 more
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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
Shohei Kajikawa +5 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
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Mechanical behavior and energy absorption of expansion circular tube with negative Poisson’s ratio
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 +6 more
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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.
Hyerin Kwon +3 more
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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
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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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Behaviour of expansion tubes under impact load: Deformation mode and mechanical response
Materials & 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
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