The effect of weld metal matching on girth weld performance. Volume 2, Experimental investigation: Final report

Technical Report · Sun Jan 24 04:00:00 EST 1993

OSTI ID:10195058

Denys, R M ^[1]

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1. Univ. Gent (Belgium). Lab. Soete

This report provides an experimental study of the failure behavior of 11.6 mm (0.457 in) pipe segments taken from 36 inch diameter pipes containing defects in the girth weld using small scale and fatigue pre-cracked curved wide plate test specimens. The focal points of the evaluations were: to study the effect of the relative difference between pipe and weld metal yield strengths on girth weld performance; to verify the assumption that the CTOD (Crack Tip Opening Displacement) test is a reliable indicator of girth weld performance; and to evaluate the usefulness of the Charpy V notch test for predicting girth weld failure behavior. The investigations have demonstrated that it would be highly desirable to require weld metal yield strength overmatching for preventing the situation where a weak weld would have to take the applied deformations and to develop a reliable testing procedure for the determination of weld metal yield strength.

• Research Organization: American Gas Association, Inc., Arlington, VA (United States). Pipeline Research Committee; Ghent Rijksuniversiteit (Belgium). Lab. Soete
• Sponsoring Organization: American Gas Association, Inc., Arlington, VA (United States)
• OSTI ID: 10195058
• Report Number(s): AGA--94003348; ON: UN94003348; CNN: Contract PR 202-922
• Country of Publication: United States
• Language: English

Related Subjects

03 NATURAL GAS
032000
36 MATERIALS SCIENCE
360103
42 ENGINEERING
420500
EVALUATION
EXPERIMENTAL DATA
FAILURES
FATIGUE
MATERIALS TESTING
MECHANICAL PROPERTIES
MECHANICAL TESTS
NATURAL GAS DISTRIBUTION SYSTEMS
NOTCHES
PIPES
PROGRESS REPORT
STEELS
TRANSPORT, HANDLING, AND STORAGE
WELDED JOINTS
YIELD STRENGTH