Browse > Article
http://dx.doi.org/10.9713/kcer.2017.55.4.561

Numerical Simulation of Heat and Flow Behaviors in Butt-fusion Welding Process of HDPE Pipes with Curved Fusion Surface  

Yoo, Jae Hyun (School of Chemical and Biological Engineering, Institute of Chemical Processes, Seoul National University)
Choi, Sunwoong (Department of Advanced Materials & Chemical Engineering, Hannam University)
Ahn, Kyung Hyun (School of Chemical and Biological Engineering, Institute of Chemical Processes, Seoul National University)
Oh, Ju Seok (Department of Advanced Materials & Chemical Engineering, Hannam University)
Publication Information
Korean Chemical Engineering Research / v.55, no.4, 2017 , pp. 561-566 More about this Journal
Abstract
Butt-fusion welding process is used to join the polymeric pipes. Recently, some researchers suggest the curved surface to enhance a welding quality. We investigated how curved welding surface affects heat and flow behaviors of polymer melt during the process in 2D axisymmetric domain with finite element method, and discussed the effect to the welding quality. In this study, we considered HDPE pipes. In heat soak stage, curved phase interface between the melt and solid is shown along the shape of welding surface. In jointing stage, squeezing flow is generated between curved welding surface and phase interface. The low shear rate in fusion domain reduces the alignment of polymer to the perpendicular direction of pipes, and then this phenomenon is expected to help to enhance the welding quality.
Keywords
Butt-fusion welding; Heat and flow behaviors; HDPE pipes; Finite element method; Melt flow;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
연도 인용수 순위
1 Barber, P. and Atkinson, J. R., "Some Microstructural Features of the Welds in Butt-welded Polyethylene and Polybutene-1 Pipes," J. Mater. Sci., 7, 1131-1136(1972).   DOI
2 Barber, P. and Atkinson, J. R., "The Use of Tensile Tests to Determine the Optimum Conditions for Butt Fusion Welding Certain Grades of Polyethylene, Polybutene-1 and Polypropylene Pipes," J. Mater. Sci., 9, 1456-1466(1974).   DOI
3 Colaluca, M. A., Earles, L. L. and Malguarnera, S. C., "Fractional Factorial Testing to Determine Processing Parameters Producing Acceptable Heat Fused Joints in Polyethylene Pipe," Polym-Plast. Technol., 20, 181-195(1983).   DOI
4 Decourcy, D. R. and Atkinson, J. R., "The Use of Tensile Tests to Determine the Optimum Conditions for Butt Welding Polyethylene Pipes of Different Melt Flow Index," J. Mater. Sci., 12, 1535-1551(1977).   DOI
5 Riahi, M., Kooshayan, K. and Ghanati, M. F., "Analysis of Effect of Pressure and Heat on Mechanical Characteristic of Butt Fusion Welding of Polyethylene Pipes," Polym-Plast. Technol., 50, 907-915(2011).   DOI
6 Yoo, J. H., Choi, S., Nam, J., Ahn, K. H. and Oh, J. S., "Numerical Analysis of the Heat Transfer and Fluid Flow in the Buttfusion Welding Process," Korea-Aust. Rheol. J., 29, 37-49(2017).   DOI
7 Mao, W. and Khayat, R. E., "Numerical Simulation of Transient Planar Flow of a Viscoelastic Material with Two Moving Free Surfaces," Int. J. Numer. Meth. Fl., 21, 1137-1151(1995).   DOI
8 Lee, S. H., Koh, H. J., Shim, S. H., Jung, H. W. and Hyun, J. C., "An Optimal Die Design for the Coating Uniformity of Nan-Newtonian Liquids in Slot Coating Process," Korean Chem. Eng. Res., 49(3), 314-319(2011).   DOI
9 Huang, C., Winkler, R. G., Sutmann, G. and Gompper, G., "Semidilute Polymer Solutions at Equilibrium and Under Shear Flow," Macromolecules, 43, 10107-10116(2010).   DOI
10 EL-Bagory, T. M., Sallam, H. E. and Younan, M. Y., "Effect of Strain Rate, Thickness, Welding on the J-R Curve for Polyethylene Pipe Materials," Theor. Appl. Fract. Mec., 74, 164-180(2014).   DOI
11 Leskovics, K., Kollar, M. and Barczy, P., "A Study of Structure and Mechanical Properties of Welded Joints in Polyethylene Pipes," Mater. Sci. Eng. A, 419, 138-143(2006).   DOI
12 Wood, A. S., "The Butt-fusion Welding of Polymers," Chem. Eng. Sci., 48, 3071-3082(1993).   DOI
13 Shillitoe, S., Day, A. J. and Benkreira, H., "A Finite Element Approach to Butt Fusion Welding Analysis," P. I. Mech. Eng. E-J. Pro., 204, 95-101(1990).   DOI
14 Benkreira, H., Shillitoe, S. and Day, A. J., "Modeling of the Butt Fusion Welding Process," Chem. Eng. Sci., 46, 135-142(1991).   DOI
15 Wood, A. S., "Numerical Simulation of the Butt-fusion Welding Process," IMA J. Math. Appl. Bus., 7, 117-127(1996).
16 Islam, M. T. and Archer, L. A., "Nonlinear Rheology of Highly Entangled Polymer Solutions in Start-up and Steady Shear Flow," J. Polym. Sci. Pol. Phys., 39, 2275-2289(2001).   DOI
17 Padding, J. T. and Briels, W. J., "Coarse-grained Molecular Dynamics Simulations of Polymer Melts in Transient and Steady Shear Flow," J. Chem. Phys., 118, 10276-10286(2003).   DOI
18 Oh, J. S., Choi, S. W., "Joining Method for Polyethylene Pipes Using Butt Fusion," The Korean Intellectual Property Office, Application No. 10-2014-0045605(2014).