Impact analysis of clearance occurring between polymeric pipe and connector in the process of electrofusion (EF) weldment of pipes

摘要

In this investigation, all parameters having impact on quality of electrofusions (EF) welding of polyethylene pipes were reviewed. Among those outstanding points recognized, one has been carefully and selectively studied. Impact of clearance between fittings and pipes and its effect on the strength of EF weldment at such a location has been chosen for analysis. Obtained results from modeling of finite element of EF fitting in ANSYS have been compared with the actual experiments conducted in the welding process. Convergences of the findings on comparison basis are satisfactory. Quality of welding has been measured mechanically through tension testing of the welded pieces. Two points in particular have been scrutinized while conducting the test: first, tensile strength of the weld and then elongation of the weld surface at rupture point.