Master Curve Procedure Accounting for the Combined, Constraint, Ductile Tearing and Loading Rate Effects

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

    Abstract

    The probability of brittle fracture is affected, aside from the crack driving force, by changes in constraint, loading rate and crack propagation due to an increase in the sampling volume. In addition, crack propagation, per se, can lead to constraint changes and it also affects the effective strain rate at the crack tip. Especially in the case of leak before break (LBB) where a surface crack transforms instantaneously to a through-wall crack, the increase in local strain rate combined with constraint change and ductile crack extension can be sufficient to cause a transition from ductile fracture to brittle fracture. This, and other similar events, require the development of an advanced Master Curve procedure to account for combined effect of constraint, ductile tearing and loading rate on the brittle fracture probability. A simplified methodology for achieving this is outlined and demonstrated here.
    Original languageEnglish
    Title of host publicationASME 2019 Pressure Vessels & Piping Conference
    Subtitle of host publicationVolume 6A: Materials and Fabrication
    PublisherAmerican Society of Mechanical Engineers ASME
    Number of pages7
    ISBN (Electronic)978-0-7918-5897-4
    DOIs
    Publication statusPublished - 2019
    MoE publication typeA4 Article in a conference publication
    EventASME 2019 Pressure Vessels and Piping Conference, PVP 2019 - San Antonio, United States
    Duration: 14 Jul 201919 Jul 2019

    Conference

    ConferenceASME 2019 Pressure Vessels and Piping Conference, PVP 2019
    CountryUnited States
    CitySan Antonio
    Period14/07/1919/07/19

    Fingerprint

    Brittle fracture
    Cracks
    Strain rate
    Crack propagation
    Ductile fracture
    Crack tips
    Sampling

    Cite this

    Lindqvist, S., & Wallin, K. (2019). Master Curve Procedure Accounting for the Combined, Constraint, Ductile Tearing and Loading Rate Effects. In ASME 2019 Pressure Vessels & Piping Conference: Volume 6A: Materials and Fabrication [ PVP2019-93844] American Society of Mechanical Engineers ASME. https://doi.org/10.1115/PVP2019-93844
    Lindqvist, Sebastian ; Wallin, Kim. / Master Curve Procedure Accounting for the Combined, Constraint, Ductile Tearing and Loading Rate Effects. ASME 2019 Pressure Vessels & Piping Conference: Volume 6A: Materials and Fabrication. American Society of Mechanical Engineers ASME, 2019.
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    title = "Master Curve Procedure Accounting for the Combined, Constraint, Ductile Tearing and Loading Rate Effects",
    abstract = "The probability of brittle fracture is affected, aside from the crack driving force, by changes in constraint, loading rate and crack propagation due to an increase in the sampling volume. In addition, crack propagation, per se, can lead to constraint changes and it also affects the effective strain rate at the crack tip. Especially in the case of leak before break (LBB) where a surface crack transforms instantaneously to a through-wall crack, the increase in local strain rate combined with constraint change and ductile crack extension can be sufficient to cause a transition from ductile fracture to brittle fracture. This, and other similar events, require the development of an advanced Master Curve procedure to account for combined effect of constraint, ductile tearing and loading rate on the brittle fracture probability. A simplified methodology for achieving this is outlined and demonstrated here.",
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    Lindqvist, S & Wallin, K 2019, Master Curve Procedure Accounting for the Combined, Constraint, Ductile Tearing and Loading Rate Effects. in ASME 2019 Pressure Vessels & Piping Conference: Volume 6A: Materials and Fabrication., PVP2019-93844, American Society of Mechanical Engineers ASME, ASME 2019 Pressure Vessels and Piping Conference, PVP 2019, San Antonio, United States, 14/07/19. https://doi.org/10.1115/PVP2019-93844

    Master Curve Procedure Accounting for the Combined, Constraint, Ductile Tearing and Loading Rate Effects. / Lindqvist, Sebastian; Wallin, Kim.

    ASME 2019 Pressure Vessels & Piping Conference: Volume 6A: Materials and Fabrication. American Society of Mechanical Engineers ASME, 2019. PVP2019-93844.

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

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    AB - The probability of brittle fracture is affected, aside from the crack driving force, by changes in constraint, loading rate and crack propagation due to an increase in the sampling volume. In addition, crack propagation, per se, can lead to constraint changes and it also affects the effective strain rate at the crack tip. Especially in the case of leak before break (LBB) where a surface crack transforms instantaneously to a through-wall crack, the increase in local strain rate combined with constraint change and ductile crack extension can be sufficient to cause a transition from ductile fracture to brittle fracture. This, and other similar events, require the development of an advanced Master Curve procedure to account for combined effect of constraint, ductile tearing and loading rate on the brittle fracture probability. A simplified methodology for achieving this is outlined and demonstrated here.

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    Lindqvist S, Wallin K. Master Curve Procedure Accounting for the Combined, Constraint, Ductile Tearing and Loading Rate Effects. In ASME 2019 Pressure Vessels & Piping Conference: Volume 6A: Materials and Fabrication. American Society of Mechanical Engineers ASME. 2019. PVP2019-93844 https://doi.org/10.1115/PVP2019-93844