Juseok OHa, Youngjin Ohb, Seunggun Leeb, Jongsung Kimc, and Sunwoong Choia
Papers # 2012 Barcelona
Butt fusion welding is a method of joining often practiced in structural plastic pipes used in pressure applications, where joint integrity is a strict requirement for design lifetime of fifty or more years. The fusion process encompasses melt flow and rheology as well as diffusion and solidification sciences in which they all work toward in producing a safe and reliable joint. Different joining conditions were prepared to investigate welding property. Among several welding conditions, this paper focuses on the effect of pressure and temperature of welding process to slow crack growth. From short term test, it was revealed that welding pressure and temperature exert considerable effect to the joint strength. Besides short term test we designed and conducted long term integrity tests, and these experiments will reveal more profound effect of welding conditions.