Assessing fatigue endurance limit of pitted specimens by means of an integrated fracture mechanics approach

Nicolas O. Larrosa; Mirco D. Chapetti; Robert A. Ainsworth

doi:10.1115/PVP2015-45562

Assessing fatigue endurance limit of pitted specimens by means of an integrated fracture mechanics approach

Nicolas O. Larrosa, Mirco D. Chapetti, Robert A. Ainsworth

Research output: Chapter in Book/Report/Conference proceeding › Conference Contribution (Conference Proceeding)

1 Citation (Scopus)

Abstract

From an operator/engineering perspective, the correct assessment of the severity of corrosion defects (e.g., pits) can have enormous economic, social and environmental benefits; therefore the development of a generally applicable and simple to apply procedure for fatigue assessment of key components is recognised as a valuable tool, seeking to reduce the current overly conservative procedures whilst maintaining structural integrity. The critical condition for a crack emanating from a pit (pit-to-crack transition) to start to propagate is analysed in this paper. The pit-crack configuration is re-characterized into that of a hemispherical crack of length equal to the pit depth, and this assumption is analysed by detailed 3D FEA. A propagation threshold approach is used to estimate the fatigue resistance from intrinsic material properties. The proposed approach is validated by comparison with experimental results available in the open literature.

Original language	English
Title of host publication	Operations, Applications and Components
Publisher	American Society of Mechanical Engineers (ASME)
Volume	7
ISBN (Electronic)	9780791857021
DOIs	https://doi.org/10.1115/PVP2015-45562
Publication status	Published - 2015
Event	ASME 2015 Pressure Vessels and Piping Conference, PVP 2015 - Boston, United States Duration: 19 Jul 2015 → 23 Jul 2015

Conference

Conference	ASME 2015 Pressure Vessels and Piping Conference, PVP 2015
Country/Territory	United States
City	Boston
Period	19/07/15 → 23/07/15

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@inproceedings{bd9a710d6048445481f1a03ed73871f5,

title = "Assessing fatigue endurance limit of pitted specimens by means of an integrated fracture mechanics approach",

abstract = "From an operator/engineering perspective, the correct assessment of the severity of corrosion defects (e.g., pits) can have enormous economic, social and environmental benefits; therefore the development of a generally applicable and simple to apply procedure for fatigue assessment of key components is recognised as a valuable tool, seeking to reduce the current overly conservative procedures whilst maintaining structural integrity. The critical condition for a crack emanating from a pit (pit-to-crack transition) to start to propagate is analysed in this paper. The pit-crack configuration is re-characterized into that of a hemispherical crack of length equal to the pit depth, and this assumption is analysed by detailed 3D FEA. A propagation threshold approach is used to estimate the fatigue resistance from intrinsic material properties. The proposed approach is validated by comparison with experimental results available in the open literature.",

author = "Larrosa, {Nicolas O.} and Chapetti, {Mirco D.} and Ainsworth, {Robert A.}",

year = "2015",

doi = "10.1115/PVP2015-45562",

language = "English",

volume = "7",

booktitle = "Operations, Applications and Components",

publisher = "American Society of Mechanical Engineers (ASME)",

address = "United States",

note = "ASME 2015 Pressure Vessels and Piping Conference, PVP 2015 ; Conference date: 19-07-2015 Through 23-07-2015",

}

Larrosa, NO, Chapetti, MD & Ainsworth, RA 2015, Assessing fatigue endurance limit of pitted specimens by means of an integrated fracture mechanics approach. in Operations, Applications and Components. vol. 7, American Society of Mechanical Engineers (ASME), ASME 2015 Pressure Vessels and Piping Conference, PVP 2015, Boston, United States, 19/07/15. https://doi.org/10.1115/PVP2015-45562

Assessing fatigue endurance limit of pitted specimens by means of an integrated fracture mechanics approach. / Larrosa, Nicolas O.; Chapetti, Mirco D.; Ainsworth, Robert A.
Operations, Applications and Components. Vol. 7 American Society of Mechanical Engineers (ASME), 2015.

Research output: Chapter in Book/Report/Conference proceeding › Conference Contribution (Conference Proceeding)

TY - GEN

T1 - Assessing fatigue endurance limit of pitted specimens by means of an integrated fracture mechanics approach

AU - Larrosa, Nicolas O.

AU - Chapetti, Mirco D.

AU - Ainsworth, Robert A.

PY - 2015

Y1 - 2015

N2 - From an operator/engineering perspective, the correct assessment of the severity of corrosion defects (e.g., pits) can have enormous economic, social and environmental benefits; therefore the development of a generally applicable and simple to apply procedure for fatigue assessment of key components is recognised as a valuable tool, seeking to reduce the current overly conservative procedures whilst maintaining structural integrity. The critical condition for a crack emanating from a pit (pit-to-crack transition) to start to propagate is analysed in this paper. The pit-crack configuration is re-characterized into that of a hemispherical crack of length equal to the pit depth, and this assumption is analysed by detailed 3D FEA. A propagation threshold approach is used to estimate the fatigue resistance from intrinsic material properties. The proposed approach is validated by comparison with experimental results available in the open literature.

AB - From an operator/engineering perspective, the correct assessment of the severity of corrosion defects (e.g., pits) can have enormous economic, social and environmental benefits; therefore the development of a generally applicable and simple to apply procedure for fatigue assessment of key components is recognised as a valuable tool, seeking to reduce the current overly conservative procedures whilst maintaining structural integrity. The critical condition for a crack emanating from a pit (pit-to-crack transition) to start to propagate is analysed in this paper. The pit-crack configuration is re-characterized into that of a hemispherical crack of length equal to the pit depth, and this assumption is analysed by detailed 3D FEA. A propagation threshold approach is used to estimate the fatigue resistance from intrinsic material properties. The proposed approach is validated by comparison with experimental results available in the open literature.

UR - http://www.scopus.com/inward/record.url?scp=84961315101&partnerID=8YFLogxK

U2 - 10.1115/PVP2015-45562

DO - 10.1115/PVP2015-45562

M3 - Conference Contribution (Conference Proceeding)

AN - SCOPUS:84961315101

VL - 7

BT - Operations, Applications and Components

PB - American Society of Mechanical Engineers (ASME)

T2 - ASME 2015 Pressure Vessels and Piping Conference, PVP 2015

Y2 - 19 July 2015 through 23 July 2015

ER -

Assessing fatigue endurance limit of pitted specimens by means of an integrated fracture mechanics approach

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