A low-constraint test designed to reduce unnecessary conservatism in the measurement of toughness for use in the assessment of flaws in pipeline girth welds has been developed. The test was first proven on nominally homogeneous material (pipe base metal) to check the practicality of the procedures and to study the effects of the controlling geometric parameters (a/W, etc.) on toughness. The intent of this report is to reference the publications resulting from this work and to summarize the principal conclusions. This is the third report of a series of seven technical reports detailing the small-scale...
A low-constraint test designed to reduce unnecessary conservatism in the measurement of toughness for use in the assessment of flaws in pipeline girth welds has been developed. The test was first proven on nominally homogeneous material (pipe base metal) to check the practicality of the procedures and to study the effects of the controlling geometric parameters (a/W, etc.) on toughness. The intent of this report is to reference the publications resulting from this work and to summarize the principal conclusions. This is the third report of a series of seven technical reports detailing the small-scale mechanical testing performed on the trial welds in this consolidated program. An outline of the reporting flow is given in the Introduction to the Summary of Mechanical Properties technical report 277-T-08. The present report highlights the principal results of preliminary application of the toughness test procedure that have been published in a series of papers in the open literature.