Single-edge notched tension (SE(T) or SENT) specimens have been increasingly proposed as a low-constraint toughness test to measure toughness of line pipe materials, as the crack tip constraint approximates a circumferential surface flaw in a pipe under loading. The clamped SE(T) single-specimen procedures recently developed by Shen and Tyson (2008, “Fracture Toughness Evaluation of High Strength Steel Pipe,” ASME Paper No. PVP2008-61100; 2008, “Development of Procedure for Low-Constraint Toughness Testing Using a Single-Specimen Technique,” CANMET Materials Technology Laboratory, Technical Report No. 2008-18 (TR)) and Tang et al. (2010, “Development of the SENT Test of Strain-Based Design of Welded Pipelines,” 8th International Pipeline Conference, IPC 2010, Calgary, AB, Canada) have both used in common the use of a clamped single-specimen of similar geometry and relied on the unloading compliance technique for crack size estimation. In the former case, a single clip gauge is attached to the integral knife edge and the crack-tip opening displacement (CTOD) is estimated by means of a J-integral-to-CTOD conversion, similar to the procedure of ASTM E1820-11. The latter uses a pair of clip gauges mounted on an attachable raised set of knife edges to estimate CTOD at the original crack tip position by a triangulation rule. Consolidating these two sets of clip gauges in a specimen makes direct comparisons of two SE(T) methods under identical test conditions: material, specimen geometry, equipment, test temperature, and operator (Weeks et al., 2013, “Fracture Toughness Instrumentation Techniques for Single-Specimen Clamped SE(T) Tests on X100 Linepipe Steel: Experimental Setup,” 6th Pipeline Technology Conference, Ostend, Belgium). In this study, SE(T) testing employing these two SE(T) methods on a single specimen was conducted on B × B shallow-cracked (a/W ∼ 0.35) specimens of two X70 pipeline girth welds. This paper discusses details of the two SE(T) methods and techniques on the same specimen.
Skip Nav Destination
Article navigation
October 2016
Research-Article
Low-Constraint Toughness Testing of Two Single-Edge Notched Tension Methods in a Single Specimen
Dong-Yeob Park,
Dong-Yeob Park
CanmetMATERIALS,
Natural Resources Canada,
3303-33 Street N.W.,
Calgary, AB T2L 2A7, Canada
e-mail: dong-yeob.park@canada.ca
Natural Resources Canada,
3303-33 Street N.W.,
Calgary, AB T2L 2A7, Canada
e-mail: dong-yeob.park@canada.ca
Search for other works by this author on:
Jean-Philippe Gravel,
Jean-Philippe Gravel
CanmetMATERIALS,
Natural Resources Canada,
3303-33 Street N.W.,
Calgary, AB T2L 2A7, Canada
e-mail: jean-philippe.gravel@canada.ca
Natural Resources Canada,
3303-33 Street N.W.,
Calgary, AB T2L 2A7, Canada
e-mail: jean-philippe.gravel@canada.ca
Search for other works by this author on:
C. Hari Manoj Simha,
C. Hari Manoj Simha
CanmetMATERIALS,
Natural Resources Canada,
183 Longwood Road South,
Hamilton, ON L8P0A5, Canada
e-mail: hari.simha@canada.ca
Natural Resources Canada,
183 Longwood Road South,
Hamilton, ON L8P0A5, Canada
e-mail: hari.simha@canada.ca
Search for other works by this author on:
Jie Liang,
Jie Liang
CanmetMATERIALS,
Natural Resources Canada,
183 Longwood Road South,
Hamilton, ON L8P0A5, Canada
e-mail: jie.liang@canada.ca
Natural Resources Canada,
183 Longwood Road South,
Hamilton, ON L8P0A5, Canada
e-mail: jie.liang@canada.ca
Search for other works by this author on:
Da-Ming Duan
Da-Ming Duan
Search for other works by this author on:
Dong-Yeob Park
CanmetMATERIALS,
Natural Resources Canada,
3303-33 Street N.W.,
Calgary, AB T2L 2A7, Canada
e-mail: dong-yeob.park@canada.ca
Natural Resources Canada,
3303-33 Street N.W.,
Calgary, AB T2L 2A7, Canada
e-mail: dong-yeob.park@canada.ca
Jean-Philippe Gravel
CanmetMATERIALS,
Natural Resources Canada,
3303-33 Street N.W.,
Calgary, AB T2L 2A7, Canada
e-mail: jean-philippe.gravel@canada.ca
Natural Resources Canada,
3303-33 Street N.W.,
Calgary, AB T2L 2A7, Canada
e-mail: jean-philippe.gravel@canada.ca
C. Hari Manoj Simha
CanmetMATERIALS,
Natural Resources Canada,
183 Longwood Road South,
Hamilton, ON L8P0A5, Canada
e-mail: hari.simha@canada.ca
Natural Resources Canada,
183 Longwood Road South,
Hamilton, ON L8P0A5, Canada
e-mail: hari.simha@canada.ca
Jie Liang
CanmetMATERIALS,
Natural Resources Canada,
183 Longwood Road South,
Hamilton, ON L8P0A5, Canada
e-mail: jie.liang@canada.ca
Natural Resources Canada,
183 Longwood Road South,
Hamilton, ON L8P0A5, Canada
e-mail: jie.liang@canada.ca
Da-Ming Duan
1Corresponding author.
Contributed by the Pressure Vessel and Piping Division of ASME for publication in the JOURNAL OF PRESSURE VESSEL TECHNOLOGY. Manuscript received October 6, 2014; final manuscript received March 4, 2016; published online April 29, 2016. Assoc. Editor: Hardayal S. Mehta.
J. Pressure Vessel Technol. Oct 2016, 138(5): 051401 (6 pages)
Published Online: April 29, 2016
Article history
Received:
October 6, 2014
Revised:
March 4, 2016
Citation
Park, D., Gravel, J., Hari Manoj Simha, C., Liang, J., and Duan, D. (April 29, 2016). "Low-Constraint Toughness Testing of Two Single-Edge Notched Tension Methods in a Single Specimen." ASME. J. Pressure Vessel Technol. October 2016; 138(5): 051401. https://doi.org/10.1115/1.4032998
Download citation file:
Get Email Alerts
Cited By
Investigations of In-Plane Fluidelastic Instability in a Multispan U-Bend Tube Array—Part II: Tests in Two-Phase Flow
J. Pressure Vessel Technol (April 2023)
Investigations of In-Plane Fluidelastic Instability in a Multispan U-Bend Tube Array—Part I: Tests in Air Flow
J. Pressure Vessel Technol (April 2023)
Research on the Buckling Load of Clamped Spherical Caps Under External Pressure: Analyzed by the Fourier Series Model With Initial Geometric Imperfections
J. Pressure Vessel Technol (April 2023)
Identification of Crack Shapes by Digital Image Correlation Using JE-MAP Method
J. Pressure Vessel Technol
Related Articles
The Fracture Toughness of Hardened Tool Steels
J. Eng. Mater. Technol (October,1987)
Cost-Effective Alternatives to Conventional Charpy Tests for Measuring the Impact Toughness of Very-High-Toughness Steels
J. Pressure Vessel Technol (April,2018)
Overview of NIST Activities on Subsize and Miniaturized Charpy Specimens: Correlations With Full-Size Specimens and Verification Specimens for Small-Scale Pendulum Machines
J. Pressure Vessel Technol (June,2016)
A Comparative Evaluation of Fatigue and Fracture Characteristics of Structural Components of Liquefied Natural Gas Carrier Insulation System
J. Pressure Vessel Technol (April,2013)
Related Chapters
Nonmetallic Pressure Piping System Components 1 Part A: Experience With Nonmetallic Materials in Structural/Pressure Boundary Applications
Companion Guide to the ASME Boiler and Pressure Vessel Codes, Volume 1, Fifth Edition
Applications of Elastic-Plastic Fracture Mechanics in Section XI, ASME Code Evaluations
Online Companion Guide to the ASME Boiler and Pressure Vessel Codes
Materials
Power Boilers: A Guide to the Section I of the ASME Boiler and Pressure Vessel Code, Second Edition