NDLI: SE(T) Testing of Pipeline Welds

Content Provider	The American Society of Mechanical Engineers (ASME) Digital Collection
Author	Drexler, Elizabeth Wang, Yong-Yi Jeffrey, W. Sowards Marc, D. Dvorak
Copyright Year	2010
Abstract	Single edge-notch tension (referred to as SE(T) or SENT) tests are increasingly being used in the pipeline community, as they are a laboratory-scale fracture toughness test, capable of being performed on linepipe steels and welds. The constraint and loading conditions of the SE(T) specimens more closely correspond with actual field flaws than those of the conventional three-point-bend CTOD (crack tip opening displacement) specimens. The test matrix covered in this paper consists of two nominally X65 pipes and one X80 pipe. Two welding procedures were applied to one of the X65 pipes, resulting in two different welds. Consequently four girth welds were in the test matrix. Notches were cut with electrical discharge machining (EDM) from the outer-diameter (OD) surface of the pipe with the target locations in the base metal, weld centerline, and heat-affected zone (HAZ). The EDM notches were grown by fatigue precracking in a three-point bend fixture to generate sharp flaws. The specimens were loaded in tension and periodically unloaded to generate J-integral resistance curves. The specimens with the weld and HAZ flaws were tested at room temperature and three to four lower temperatures. This paper covers the specimen preparation and the comparison of test results among specimens with different flaw locations at a wide range of temperatures. The specimen preparation and fatigue crack front straightness presented significant challenges. In general, at a given temperature, cracks propagated at lower energies in the weld material than in the HAZ or base material. Comparison of the J-integral curves for the even-matched and over-matched welds showed greater toughness in the over-matched weld at lower temperatures (but still on the upper-shelf of the curves of the ductile-to-brittle transition temperature (DBTT)). Testing at low temperatures appears to affect the HAZ differently than the weld material, as significant increases in toughness were observed between room temperature and −80°C in the HAZ.
Sponsorship	International Petroleum Technology Institute and the Pipeline Division
Starting Page	149
Ending Page	158
Page Count	10
File Format	PDF
ISBN	9780791844236
DOI	10.1115/IPC2010-31325
e-ISBN	9780791838853
Volume Number	2010 8th International Pipeline Conference, Volume 4
Conference Proceedings	2010 8th International Pipeline Conference
Language	English
Publisher Date	2010-09-27
Publisher Place	Calgary, Alberta, Canada
Access Restriction	Subscribed
Subject Keyword	Low-constraint testing Resistance curve Se(t) Pipeline welds Toughness transition Welded joints Pipelines Fracture toughness Testing
Content Type	Text
Resource Type	Article

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in

Low-Constraint Testing of Pipeline Girth Welds

Practical Application of Low Constraint SENT Fracture Toughness Testing for Pipeline Girth Welds

Fracture Toughness of X100 Pipe Girth Welds Using SE(T) and SE(B) Tests

Fracture Toughness Testing of Pipeline Girth Welds

Low-Constraint Toughness Testing of Two SE(T) Methods in a Single Specimen

Overview of Tensile and Toughness Testing Protocols for Assessment of X100 Pipeline Girth Welds

Fracture Toughness Estimation for Pipeline Girth Welds

Tensile and Toughness Properties of Pipeline Girth Welds

Fracture Toughness of X70 Pipe Girth Welds Using Clamped SE(T) and SE(B) Single-Specimens

SE(T) Testing of Pipeline Welds

Similar Documents

Low-Constraint Testing of Pipeline Girth Welds

Practical Application of Low Constraint SENT Fracture Toughness Testing for Pipeline Girth Welds

Fracture Toughness of X100 Pipe Girth Welds Using SE(T) and SE(B) Tests

Fracture Toughness Testing of Pipeline Girth Welds

Low-Constraint Toughness Testing of Two SE(T) Methods in a Single Specimen

Overview of Tensile and Toughness Testing Protocols for Assessment of X100 Pipeline Girth Welds

Fracture Toughness Estimation for Pipeline Girth Welds

Tensile and Toughness Properties of Pipeline Girth Welds

Fracture Toughness of X70 Pipe Girth Welds Using Clamped SE(T) and SE(B) Single-Specimens

SE(T) Testing of Pipeline Welds