A probabilistic approach for cleavage fracture including the statistics of microcracks: Application to a reactor pressure vessel steel

Claudio Ruggieri; Andrey P. Jivkov

doi:10.1016/j.engfracmech.2022.108702

A probabilistic approach for cleavage fracture including the statistics of microcracks: Application to a reactor pressure vessel steel

Claudio Ruggieri, Andrey P. Jivkov

Mechanical and Aerospace Engineering

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

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Abstract

This work describes a probabilistic framework for cleavage fracture incorporating the measured statistics of microcracks to characterize the cleavage fracture toughness distribution in structural ferritic steels. Fracture toughness testing conducted on standard compact tension C(T) specimens for a 22NiMoCr37 pressure vessel steel, known as the EURO steel A, for varying test temperatures provides the cleavage fracture resistance data needed to determine the experimentally measured
-distribution. Metallographic examination of etched surfaces for the EURO steel also provides the distribution of carbides, which are assumed as the Griffith fracture-initiating particles, dispersed in the material from which the cleavage fracture toughness distribution is predicted. Overall, the analyses conducted in the present work show that the probabilistic model incorporating the statistics of microcracks holds significant promise as an engineering-level procedure to predict the fracture behavior in structural components with diverse range of temperature and possibly crack-tip constraint.

Original language	English
Article number	108702
Number of pages	15
Journal	Engineering Fracture Mechanics
Volume	272
Early online date	6 Aug 2022
DOIs	https://doi.org/10.1016/j.engfracmech.2022.108702
Publication status	Published - 1 Sept 2022

Keywords

Cleavage Fracture
Fracture Toughness
Weibull Stress
RPV steel
Probabilistic Fracture Mechanics

Research Beacons, Institutes and Platforms

Advanced materials
Energy

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

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10.1016/j.engfracmech.2022.108702

AAMAccepted author manuscript, 971 KBLicence: CC BY-NC-ND

6 Article
1 Paper

Capturing the Temperature Dependence of Cleavage Fracture Toughness in the Ductile-to-Brittle Transition Regime in Ferritic Steels using an Improved Engineering Local Approach
Yankova, M., Jivkov, A., Patel, R. & Sherry, A. H., 1 Jun 2022, In: Journal of Pressure Vessel Technology, Transactions of the ASME. 144, 3, 10 p., 031503.
Research output: Contribution to journal › Article › peer-review
Incorporation of obstacle hardening into local approach to cleavage fracture to predict temperature effects in the ductile to brittle transition regime
Yankova, M., Jivkov, A. & Patel, R., 5 Mar 2021, In: Materials. 14, 5, p. 1-12 12 p., 1224.
Research output: Contribution to journal › Article › peer-review

Open Access
File
70 Downloads (Pure)
Observations of cleavage initiation in ferritic steel
Ford, M., Jivkov, A. & James, P., 1 Dec 2020, In: Procedia Structural Integrity. 28, p. 1787–1794 8 p.
Research output: Contribution to journal › Article › peer-review

Open Access
File
117 Downloads (Pure)

Cite this

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title = "A probabilistic approach for cleavage fracture including the statistics of microcracks: Application to a reactor pressure vessel steel",

abstract = "This work describes a probabilistic framework for cleavage fracture incorporating the measured statistics of microcracks to characterize the cleavage fracture toughness distribution in structural ferritic steels. Fracture toughness testing conducted on standard compact tension C(T) specimens for a 22NiMoCr37 pressure vessel steel, known as the EURO steel A, for varying test temperatures provides the cleavage fracture resistance data needed to determine the experimentally measured -distribution. Metallographic examination of etched surfaces for the EURO steel also provides the distribution of carbides, which are assumed as the Griffith fracture-initiating particles, dispersed in the material from which the cleavage fracture toughness distribution is predicted. Overall, the analyses conducted in the present work show that the probabilistic model incorporating the statistics of microcracks holds significant promise as an engineering-level procedure to predict the fracture behavior in structural components with diverse range of temperature and possibly crack-tip constraint.",

keywords = "Cleavage Fracture, Fracture Toughness, Weibull Stress, RPV steel, Probabilistic Fracture Mechanics",

author = "Claudio Ruggieri and Jivkov, {Andrey P.}",

year = "2022",

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doi = "10.1016/j.engfracmech.2022.108702",

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journal = "Engineering Fracture Mechanics",

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TY - JOUR

T1 - A probabilistic approach for cleavage fracture including the statistics of microcracks: Application to a reactor pressure vessel steel

AU - Ruggieri, Claudio

AU - Jivkov, Andrey P.

PY - 2022/9/1

Y1 - 2022/9/1

N2 - This work describes a probabilistic framework for cleavage fracture incorporating the measured statistics of microcracks to characterize the cleavage fracture toughness distribution in structural ferritic steels. Fracture toughness testing conducted on standard compact tension C(T) specimens for a 22NiMoCr37 pressure vessel steel, known as the EURO steel A, for varying test temperatures provides the cleavage fracture resistance data needed to determine the experimentally measured -distribution. Metallographic examination of etched surfaces for the EURO steel also provides the distribution of carbides, which are assumed as the Griffith fracture-initiating particles, dispersed in the material from which the cleavage fracture toughness distribution is predicted. Overall, the analyses conducted in the present work show that the probabilistic model incorporating the statistics of microcracks holds significant promise as an engineering-level procedure to predict the fracture behavior in structural components with diverse range of temperature and possibly crack-tip constraint.

AB - This work describes a probabilistic framework for cleavage fracture incorporating the measured statistics of microcracks to characterize the cleavage fracture toughness distribution in structural ferritic steels. Fracture toughness testing conducted on standard compact tension C(T) specimens for a 22NiMoCr37 pressure vessel steel, known as the EURO steel A, for varying test temperatures provides the cleavage fracture resistance data needed to determine the experimentally measured -distribution. Metallographic examination of etched surfaces for the EURO steel also provides the distribution of carbides, which are assumed as the Griffith fracture-initiating particles, dispersed in the material from which the cleavage fracture toughness distribution is predicted. Overall, the analyses conducted in the present work show that the probabilistic model incorporating the statistics of microcracks holds significant promise as an engineering-level procedure to predict the fracture behavior in structural components with diverse range of temperature and possibly crack-tip constraint.

KW - Cleavage Fracture

KW - Fracture Toughness

KW - Weibull Stress

KW - RPV steel

KW - Probabilistic Fracture Mechanics

U2 - 10.1016/j.engfracmech.2022.108702

DO - 10.1016/j.engfracmech.2022.108702

M3 - Article

SN - 0013-7944

VL - 272

JO - Engineering Fracture Mechanics

JF - Engineering Fracture Mechanics

M1 - 108702

ER -

A probabilistic approach for cleavage fracture including the statistics of microcracks: Application to a reactor pressure vessel steel

Abstract

Keywords

Research Beacons, Institutes and Platforms

UN SDGs

Access to Document

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Research output

Capturing the Temperature Dependence of Cleavage Fracture Toughness in the Ductile-to-Brittle Transition Regime in Ferritic Steels using an Improved Engineering Local Approach

Incorporation of obstacle hardening into local approach to cleavage fracture to predict temperature effects in the ductile to brittle transition regime

Observations of cleavage initiation in ferritic steel

Cite this