Abstract
M.Ing. (Mechanical Engineering)
The use of longitudinally welded tube are limited in certain sectors of
industry due to the belief that seamless tubes are superior. The main
objective of this study was to try and prove that sufficient resistance to
internal pressure could be achieved by longitudinally welded type 304L
stainless steel tubes, while subjected to various external forces. A
knowledge of plasticity theory and failure criteria provides the basis of the
different mechanisms of tube failure. Four different tests were performed
using different external forces, while internal pressure was increased until
failure occurred. It was found that test specimens failed after reaching
acceptable pressures, irrespective of the external loading conditions.