On the environmental similitude for fracture in the SENT specimen and a cracked hydrogen gas pipeline

M. Dadfarnia; P. Sofronis; B. P. Somerday; D. K. Balch; P. Schembri; R. Melcher

doi:10.1016/j.engfracmech.2011.06.002

On the environmental similitude for fracture in the SENT specimen and a cracked hydrogen gas pipeline

M. Dadfarnia, P. Sofronis, B. P. Somerday, D. K. Balch, P. Schembri, R. Melcher

Research output: Contribution to journal › Article › peer-review

Abstract

We investigate the use of laboratory fracture specimens to ascertain the resistance to hydrogen embrittlement of a hydrogen pipeline with an axial crack on the inner diameter (ID) surface. In particular, we study the interaction of hydrogen with material elastoplasticity in single edge notch tension (SENT) specimens loaded in hydrogen gas at a pressure of 15. MPa. We find that the transient and steady state hydrogen concentration fields in the neighborhood of the crack tip in the SENT specimen and the real-life pipeline are essentially the same. This environmental similitude warrants the use of the SENT specimen in a gaseous hydrogen environment to examine the compatibility of steel pipelines with hydrogen.

Original language	English (US)
Pages (from-to)	2429-2438
Number of pages	10
Journal	Engineering Fracture Mechanics
Volume	78
Issue number	12
DOIs	https://doi.org/10.1016/j.engfracmech.2011.06.002
State	Published - Aug 2011

Keywords

Constraint fracture
Hydrogen embrittlement
Pipeline
Similitude
Transferability

ASJC Scopus subject areas

Mechanical Engineering
Mechanics of Materials
General Materials Science

Online availability

10.1016/j.engfracmech.2011.06.002

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title = "On the environmental similitude for fracture in the SENT specimen and a cracked hydrogen gas pipeline",

abstract = "We investigate the use of laboratory fracture specimens to ascertain the resistance to hydrogen embrittlement of a hydrogen pipeline with an axial crack on the inner diameter (ID) surface. In particular, we study the interaction of hydrogen with material elastoplasticity in single edge notch tension (SENT) specimens loaded in hydrogen gas at a pressure of 15. MPa. We find that the transient and steady state hydrogen concentration fields in the neighborhood of the crack tip in the SENT specimen and the real-life pipeline are essentially the same. This environmental similitude warrants the use of the SENT specimen in a gaseous hydrogen environment to examine the compatibility of steel pipelines with hydrogen.",

keywords = "Constraint fracture, Hydrogen embrittlement, Pipeline, Similitude, Transferability",

author = "M. Dadfarnia and P. Sofronis and Somerday, {B. P.} and Balch, {D. K.} and P. Schembri and R. Melcher",

note = "Funding Information: The authors gratefully acknowledge support from (i) the Los Alamos National Laboratory under US Department of Energy contract no. LANL 62568-001-08; (ii) US Department of Energy Grant GO15045; and (iii) National Science Foundation Grant DMR 0302470. ",

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language = "English (US)",

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AU - Dadfarnia, M.

AU - Sofronis, P.

AU - Somerday, B. P.

AU - Balch, D. K.

AU - Schembri, P.

AU - Melcher, R.

N1 - Funding Information: The authors gratefully acknowledge support from (i) the Los Alamos National Laboratory under US Department of Energy contract no. LANL 62568-001-08; (ii) US Department of Energy Grant GO15045; and (iii) National Science Foundation Grant DMR 0302470.

PY - 2011/8

Y1 - 2011/8

N2 - We investigate the use of laboratory fracture specimens to ascertain the resistance to hydrogen embrittlement of a hydrogen pipeline with an axial crack on the inner diameter (ID) surface. In particular, we study the interaction of hydrogen with material elastoplasticity in single edge notch tension (SENT) specimens loaded in hydrogen gas at a pressure of 15. MPa. We find that the transient and steady state hydrogen concentration fields in the neighborhood of the crack tip in the SENT specimen and the real-life pipeline are essentially the same. This environmental similitude warrants the use of the SENT specimen in a gaseous hydrogen environment to examine the compatibility of steel pipelines with hydrogen.

AB - We investigate the use of laboratory fracture specimens to ascertain the resistance to hydrogen embrittlement of a hydrogen pipeline with an axial crack on the inner diameter (ID) surface. In particular, we study the interaction of hydrogen with material elastoplasticity in single edge notch tension (SENT) specimens loaded in hydrogen gas at a pressure of 15. MPa. We find that the transient and steady state hydrogen concentration fields in the neighborhood of the crack tip in the SENT specimen and the real-life pipeline are essentially the same. This environmental similitude warrants the use of the SENT specimen in a gaseous hydrogen environment to examine the compatibility of steel pipelines with hydrogen.

KW - Constraint fracture

KW - Hydrogen embrittlement

KW - Pipeline

KW - Similitude

KW - Transferability

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On the environmental similitude for fracture in the SENT specimen and a cracked hydrogen gas pipeline

Abstract

Keywords

ASJC Scopus subject areas

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