Determination of welding residual stress distribution in API X65 pipeline using a modified magnetic Barkhausen noise method

A modified magnetic Barkhausen noise (MBN) method was applied to obtain the residual stress distribution in an API X65 pipeline weldment. Different weldment microstructures affected the magnetic response and yielded different MBN values. In order to reflect the microstructural variations in the heat...

Full description

Saved in:
Bibliographic Details
Published in:The International journal of pressure vessels and piping 2003-09, Vol.80 (9), p.641-646
Main Authors: Ju, Jang-Bog, Lee, Jung-Suk, Jang, Jae-il, Kim, Woo-sik, Kwon, Dongil
Format: Article
Language:English
Subjects:
Analysing. Testing. Standards
Applied sciences
Cross-disciplinary physics: materials science
rheology
Exact sciences and technology
Fracture toughness
Magnetic Barkhausen noise
Materials science
Materials testing
Metals. Metallurgy
Nondestructive testing: electromagnetic testing, eddy-current testing
Physics
Residual stress
Stress analysis
Welding
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:A modified magnetic Barkhausen noise (MBN) method was applied to obtain the residual stress distribution in an API X65 pipeline weldment. Different weldment microstructures affected the magnetic response and yielded different MBN values. In order to reflect the microstructural variations in the heat-affected zone (HAZ), calibration samples were extracted from four different regions: weld metal, coarse-grained HAZ (CGHAZ), fine-grained HAZ (FGHAZ), and base metal. This approach yielded that compressive residual stresses existed in the CGHAZ contrary to the tensile results using the base-metal-based calibration method. Compared with the results from the mechanical saw-cutting method, it can be concluded that the data obtained with the HAZ-based calibration method were more reliable.
ISSN:0308-0161
1879-3541
DOI:10.1016/S0308-0161(03)00131-5