Fracture toughness transferability study between the master curve method and a pressure vessel nozzle using local approach

    Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientificpeer-review

    Abstract

    Local approach methods are to greater extent used in structural integrity evaluation, in particular with respect to initiation of an unstable cleavage crack. However, local approach methods have had a tendency to be considered as methodologies with 'qualitative' potential, rather than quantitative usage in realistic analyses where lengthy and in some cases ambiguous calibration of local approach parameters is not feasible. As such, studies need to be conducted to illustrate the usability of local approach methods in structural integrity analyses and improve upon the transferability of their intrinsic, material like, constitutive parameters. Improvements of this kind can be attained by constructing improved models utilizing state of the art numerical simulation methods and presenting consistent calibration methodologies for the constitutive parameters. The current study investigates the performance of a modified Beremin model by comparing integrity evaluation results of the local approach model to those attained by using the constraint corrected Master Curve methodology. Current investigation applies the Master Curve method in conjunction with the T-stress correction of the reference temperature and a modified Beremin model to an assessment of a three-dimensional pressure vessel nozzle in a spherical vessel end. The material information for the study is extracted from the 'Euro-Curve' ductile to brittle transition region fracture toughness round robin test program. The experimental results are used to determine the Master Curve reference temperature and calibrate local approach parameters. The values are then used to determine the cumulative failure probability of cleavage crack initiation in the model structure. The results illustrate that the Master Curve results with the constraint correction are to some extent more conservative than the results attained using local approach. The used methodologies support each other and indicate that with the applied local approach and Master Curve procedures reliable estimates of structural integrity can be attained for complex material behavior and structural geometries.
    Original languageEnglish
    Title of host publicationASME 2003 Pressure Vessels and Piping Conference Proceedings
    PublisherAmerican Society of Mechanical Engineers ASME
    Pages155-164
    ISBN (Print)0-7918-4153-7
    DOIs
    Publication statusPublished - 2003
    MoE publication typeA4 Article in a conference publication
    EventASME Pressure Vessels and Piping Conference, PVP 2003 - Cleveland, United States
    Duration: 20 Jul 200324 Jul 2003

    Conference

    ConferenceASME Pressure Vessels and Piping Conference, PVP 2003
    CountryUnited States
    CityCleveland
    Period20/07/0324/07/03

    Fingerprint

    Pressure vessels
    Fracture toughness
    Nozzles
    Structural integrity
    Calibration
    Model structures
    Crack initiation
    Cracks
    Temperature
    Geometry
    Computer simulation

    Keywords

    • pressure vessels
    • nozzles
    • fracture toughness
    • ProperTune

    Cite this

    Laukkanen, A., Nevasmaa, P., Keinänen, H., & Wallin, K. (2003). Fracture toughness transferability study between the master curve method and a pressure vessel nozzle using local approach. In ASME 2003 Pressure Vessels and Piping Conference Proceedings (pp. 155-164). [PVP2003-2019] American Society of Mechanical Engineers ASME. https://doi.org/10.1115/PVP2003-2019
    Laukkanen, Anssi ; Nevasmaa, Pekka ; Keinänen, Heikki ; Wallin, Kim. / Fracture toughness transferability study between the master curve method and a pressure vessel nozzle using local approach. ASME 2003 Pressure Vessels and Piping Conference Proceedings. American Society of Mechanical Engineers ASME, 2003. pp. 155-164
    @inproceedings{52128405a4904920bcb2522add63f7ef,
    title = "Fracture toughness transferability study between the master curve method and a pressure vessel nozzle using local approach",
    abstract = "Local approach methods are to greater extent used in structural integrity evaluation, in particular with respect to initiation of an unstable cleavage crack. However, local approach methods have had a tendency to be considered as methodologies with 'qualitative' potential, rather than quantitative usage in realistic analyses where lengthy and in some cases ambiguous calibration of local approach parameters is not feasible. As such, studies need to be conducted to illustrate the usability of local approach methods in structural integrity analyses and improve upon the transferability of their intrinsic, material like, constitutive parameters. Improvements of this kind can be attained by constructing improved models utilizing state of the art numerical simulation methods and presenting consistent calibration methodologies for the constitutive parameters. The current study investigates the performance of a modified Beremin model by comparing integrity evaluation results of the local approach model to those attained by using the constraint corrected Master Curve methodology. Current investigation applies the Master Curve method in conjunction with the T-stress correction of the reference temperature and a modified Beremin model to an assessment of a three-dimensional pressure vessel nozzle in a spherical vessel end. The material information for the study is extracted from the 'Euro-Curve' ductile to brittle transition region fracture toughness round robin test program. The experimental results are used to determine the Master Curve reference temperature and calibrate local approach parameters. The values are then used to determine the cumulative failure probability of cleavage crack initiation in the model structure. The results illustrate that the Master Curve results with the constraint correction are to some extent more conservative than the results attained using local approach. The used methodologies support each other and indicate that with the applied local approach and Master Curve procedures reliable estimates of structural integrity can be attained for complex material behavior and structural geometries.",
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    Laukkanen, A, Nevasmaa, P, Keinänen, H & Wallin, K 2003, Fracture toughness transferability study between the master curve method and a pressure vessel nozzle using local approach. in ASME 2003 Pressure Vessels and Piping Conference Proceedings., PVP2003-2019, American Society of Mechanical Engineers ASME, pp. 155-164, ASME Pressure Vessels and Piping Conference, PVP 2003, Cleveland, United States, 20/07/03. https://doi.org/10.1115/PVP2003-2019

    Fracture toughness transferability study between the master curve method and a pressure vessel nozzle using local approach. / Laukkanen, Anssi; Nevasmaa, Pekka; Keinänen, Heikki; Wallin, Kim.

    ASME 2003 Pressure Vessels and Piping Conference Proceedings. American Society of Mechanical Engineers ASME, 2003. p. 155-164 PVP2003-2019.

    Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientificpeer-review

    TY - GEN

    T1 - Fracture toughness transferability study between the master curve method and a pressure vessel nozzle using local approach

    AU - Laukkanen, Anssi

    AU - Nevasmaa, Pekka

    AU - Keinänen, Heikki

    AU - Wallin, Kim

    N1 - Project code: G3SU00254

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    Y1 - 2003

    N2 - Local approach methods are to greater extent used in structural integrity evaluation, in particular with respect to initiation of an unstable cleavage crack. However, local approach methods have had a tendency to be considered as methodologies with 'qualitative' potential, rather than quantitative usage in realistic analyses where lengthy and in some cases ambiguous calibration of local approach parameters is not feasible. As such, studies need to be conducted to illustrate the usability of local approach methods in structural integrity analyses and improve upon the transferability of their intrinsic, material like, constitutive parameters. Improvements of this kind can be attained by constructing improved models utilizing state of the art numerical simulation methods and presenting consistent calibration methodologies for the constitutive parameters. The current study investigates the performance of a modified Beremin model by comparing integrity evaluation results of the local approach model to those attained by using the constraint corrected Master Curve methodology. Current investigation applies the Master Curve method in conjunction with the T-stress correction of the reference temperature and a modified Beremin model to an assessment of a three-dimensional pressure vessel nozzle in a spherical vessel end. The material information for the study is extracted from the 'Euro-Curve' ductile to brittle transition region fracture toughness round robin test program. The experimental results are used to determine the Master Curve reference temperature and calibrate local approach parameters. The values are then used to determine the cumulative failure probability of cleavage crack initiation in the model structure. The results illustrate that the Master Curve results with the constraint correction are to some extent more conservative than the results attained using local approach. The used methodologies support each other and indicate that with the applied local approach and Master Curve procedures reliable estimates of structural integrity can be attained for complex material behavior and structural geometries.

    AB - Local approach methods are to greater extent used in structural integrity evaluation, in particular with respect to initiation of an unstable cleavage crack. However, local approach methods have had a tendency to be considered as methodologies with 'qualitative' potential, rather than quantitative usage in realistic analyses where lengthy and in some cases ambiguous calibration of local approach parameters is not feasible. As such, studies need to be conducted to illustrate the usability of local approach methods in structural integrity analyses and improve upon the transferability of their intrinsic, material like, constitutive parameters. Improvements of this kind can be attained by constructing improved models utilizing state of the art numerical simulation methods and presenting consistent calibration methodologies for the constitutive parameters. The current study investigates the performance of a modified Beremin model by comparing integrity evaluation results of the local approach model to those attained by using the constraint corrected Master Curve methodology. Current investigation applies the Master Curve method in conjunction with the T-stress correction of the reference temperature and a modified Beremin model to an assessment of a three-dimensional pressure vessel nozzle in a spherical vessel end. The material information for the study is extracted from the 'Euro-Curve' ductile to brittle transition region fracture toughness round robin test program. The experimental results are used to determine the Master Curve reference temperature and calibrate local approach parameters. The values are then used to determine the cumulative failure probability of cleavage crack initiation in the model structure. The results illustrate that the Master Curve results with the constraint correction are to some extent more conservative than the results attained using local approach. The used methodologies support each other and indicate that with the applied local approach and Master Curve procedures reliable estimates of structural integrity can be attained for complex material behavior and structural geometries.

    KW - pressure vessels

    KW - nozzles

    KW - fracture toughness

    KW - ProperTune

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    DO - 10.1115/PVP2003-2019

    M3 - Conference article in proceedings

    SN - 0-7918-4153-7

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    BT - ASME 2003 Pressure Vessels and Piping Conference Proceedings

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    Laukkanen A, Nevasmaa P, Keinänen H, Wallin K. Fracture toughness transferability study between the master curve method and a pressure vessel nozzle using local approach. In ASME 2003 Pressure Vessels and Piping Conference Proceedings. American Society of Mechanical Engineers ASME. 2003. p. 155-164. PVP2003-2019 https://doi.org/10.1115/PVP2003-2019