A fracture mechanics interpretation of the DNV brittle fracture criteria for ships and mobile offshore units

Research output: Contribution to journalArticleScientificpeer-review

1 Citation (Scopus)

Abstract

Design procedures against brittle fracture are either based on empirical experience based methods or theoretical fracture mechanics based methods. Frequently, the fracture mechanics based assessment procedures are suspected to be tools by which to get acceptance for poor quality. In reality, these suspicions are somewhat unfounded, since the manufacturing standards, implicitly, also assume some specific defect size.
The standards contain specific inspection criteria, which in themselves lead to some specific possible accepted defect size. The problem has been that the manufacturing standards have not been evaluated based on an advanced fracture mechanics analysis. Here the Det Norske Veritas (DNV) rules for ships and mobile offshore units are analysed, applying the state‐of‐the‐art fracture mechanics assessment method SINTAP. Based on the assessment, the consistency of the DNV rules, with respect to strength level and inspection criteria is revealed. The assessment, also creates the possibility to extend the rules to thinner and higher strength steels.
Original languageEnglish
Pages (from-to)1033-1043
JournalFatigue & Fracture of Engineering Materials & Structures
Volume25
Issue number11
DOIs
Publication statusPublished - 2002
MoE publication typeA1 Journal article-refereed

Fingerprint

Brittle fracture
Fracture mechanics
Ships
Inspection
Defects
High strength steel

Keywords

  • brittle fracture
  • charpy-V criteria
  • correlation
  • fracture mechanics
  • ship steels
  • ProperTune

Cite this

@article{6dd69d63c05c40e39fee9d132ca9edfe,
title = "A fracture mechanics interpretation of the DNV brittle fracture criteria for ships and mobile offshore units",
abstract = "Design procedures against brittle fracture are either based on empirical experience based methods or theoretical fracture mechanics based methods. Frequently, the fracture mechanics based assessment procedures are suspected to be tools by which to get acceptance for poor quality. In reality, these suspicions are somewhat unfounded, since the manufacturing standards, implicitly, also assume some specific defect size. The standards contain specific inspection criteria, which in themselves lead to some specific possible accepted defect size. The problem has been that the manufacturing standards have not been evaluated based on an advanced fracture mechanics analysis. Here the Det Norske Veritas (DNV) rules for ships and mobile offshore units are analysed, applying the state‐of‐the‐art fracture mechanics assessment method SINTAP. Based on the assessment, the consistency of the DNV rules, with respect to strength level and inspection criteria is revealed. The assessment, also creates the possibility to extend the rules to thinner and higher strength steels.",
keywords = "brittle fracture, charpy-V criteria, correlation, fracture mechanics, ship steels, ProperTune",
author = "Kim Wallin and Pekka Nevasmaa and Anssi Laukkanen",
note = "Project code: H2SU00531",
year = "2002",
doi = "10.1046/j.1460-2695.2002.00578.x",
language = "English",
volume = "25",
pages = "1033--1043",
journal = "Fatigue & Fracture of Engineering Materials & Structures",
issn = "8756-758X",
number = "11",

}

A fracture mechanics interpretation of the DNV brittle fracture criteria for ships and mobile offshore units. / Wallin, Kim; Nevasmaa, Pekka; Laukkanen, Anssi.

In: Fatigue & Fracture of Engineering Materials & Structures, Vol. 25, No. 11, 2002, p. 1033-1043.

Research output: Contribution to journalArticleScientificpeer-review

TY - JOUR

T1 - A fracture mechanics interpretation of the DNV brittle fracture criteria for ships and mobile offshore units

AU - Wallin, Kim

AU - Nevasmaa, Pekka

AU - Laukkanen, Anssi

N1 - Project code: H2SU00531

PY - 2002

Y1 - 2002

N2 - Design procedures against brittle fracture are either based on empirical experience based methods or theoretical fracture mechanics based methods. Frequently, the fracture mechanics based assessment procedures are suspected to be tools by which to get acceptance for poor quality. In reality, these suspicions are somewhat unfounded, since the manufacturing standards, implicitly, also assume some specific defect size. The standards contain specific inspection criteria, which in themselves lead to some specific possible accepted defect size. The problem has been that the manufacturing standards have not been evaluated based on an advanced fracture mechanics analysis. Here the Det Norske Veritas (DNV) rules for ships and mobile offshore units are analysed, applying the state‐of‐the‐art fracture mechanics assessment method SINTAP. Based on the assessment, the consistency of the DNV rules, with respect to strength level and inspection criteria is revealed. The assessment, also creates the possibility to extend the rules to thinner and higher strength steels.

AB - Design procedures against brittle fracture are either based on empirical experience based methods or theoretical fracture mechanics based methods. Frequently, the fracture mechanics based assessment procedures are suspected to be tools by which to get acceptance for poor quality. In reality, these suspicions are somewhat unfounded, since the manufacturing standards, implicitly, also assume some specific defect size. The standards contain specific inspection criteria, which in themselves lead to some specific possible accepted defect size. The problem has been that the manufacturing standards have not been evaluated based on an advanced fracture mechanics analysis. Here the Det Norske Veritas (DNV) rules for ships and mobile offshore units are analysed, applying the state‐of‐the‐art fracture mechanics assessment method SINTAP. Based on the assessment, the consistency of the DNV rules, with respect to strength level and inspection criteria is revealed. The assessment, also creates the possibility to extend the rules to thinner and higher strength steels.

KW - brittle fracture

KW - charpy-V criteria

KW - correlation

KW - fracture mechanics

KW - ship steels

KW - ProperTune

U2 - 10.1046/j.1460-2695.2002.00578.x

DO - 10.1046/j.1460-2695.2002.00578.x

M3 - Article

VL - 25

SP - 1033

EP - 1043

JO - Fatigue & Fracture of Engineering Materials & Structures

JF - Fatigue & Fracture of Engineering Materials & Structures

SN - 8756-758X

IS - 11

ER -