Crack growth testing of pipeline steels using SENT fracture specimens

Author(s)

Cravero, Sebastian ; Ruggieri, Claudio ; ISOPE

• Document type: Journal article
• Source: PROCEEDINGS OF THE SEVENTEENTH (2007) INTERNATIONAL OFFSHORE AND POLAR ENGINEERING CONFERENCE, VOL 1- 4, PROCEEDINGS; v. N/A, p. 2-pg., 2007-01-01.

Abstract

This work provides the development of compliance solutions and eta-factors for experimental measurements of resistance curves in structural and pipeline steels using SENT specimens. A summary of the methodology upon which J and crack extension are derived sets the necessary framework to determine crack resistance data from the measured load vs. displacement curves. The extensive plane-strain analyses enable numerical estimates of the nondimensional compliance, mu, and parameters eta for a wide range of specimen geometries and material properties characteristic of structural and pipeline steels. The results presented here produce a representative set of solutions which lend further support to develop standard test procedures for constraint-designed SENT specimens applicable in measurements of crack growth resistance for pipelines. (AU)

• FAPESP's process: 03/02735-6 - Micromechanics and experimental methodology for defect and strutuctural integrity assessments of gas and oil transmission pipelines
• Grantee: Claudio Ruggieri
• Support Opportunities: Research Projects - Thematic Grants