Similitude of residual stresses and the warm pre stress effect

Kim R. W. Wallin

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

Abstract

A material's apparent fracture toughness, at a specific temperature and loading rate, is affected by two factors: residual stresses and the so called Warm Pre Stress (WPS) effect. Residual stresses are global stresses, independent of a pre-existing flaw. They are generally due either to welding or thermal loads, but can also be introduced by plastic deformation. The WPS is due to a local plastic deformation of the material in front of a crack. The residual stresses can be either detrimental or beneficial, whereas WPS is always beneficial. Despite their different nature and origin, they do show a similitude on the apparent fracture toughness response. This similitude is highlighted here.
Original languageEnglish
Title of host publicationBaltica IX. International Conference on Life Management and Maintenance for Power Plants
EditorsPertti Auerkari, Juha Veivo
Place of PublicationEspoo
PublisherVTT Technical Research Centre of Finland
Pages50-62
ISBN (Electronic)978-951-38-8025-5, 978-951-38-8026-2
Publication statusPublished - 2013
MoE publication typeA4 Article in a conference publication
EventBALTICA IX - International Conference on Life Management and Maintenance for Power Plants - Helsinki-Stockholm, Finland
Duration: 11 Jun 201313 Jun 2013

Publication series

NameVTT Technology
PublisherVTT
Number106
ISSN (Print)2242-1211
ISSN (Electronic)2242-122X

Conference

ConferenceBALTICA IX - International Conference on Life Management and Maintenance for Power Plants
CountryFinland
CityHelsinki-Stockholm
Period11/06/1313/06/13

Fingerprint

Residual stresses
Fracture toughness
Plastic deformation
Thermal load
Welding
Cracks
Defects
Temperature

Cite this

Wallin, K. R. W. (2013). Similitude of residual stresses and the warm pre stress effect. In P. Auerkari, & J. Veivo (Eds.), Baltica IX. International Conference on Life Management and Maintenance for Power Plants (pp. 50-62). Espoo: VTT Technical Research Centre of Finland. VTT Technology, No. 106
Wallin, Kim R. W. / Similitude of residual stresses and the warm pre stress effect. Baltica IX. International Conference on Life Management and Maintenance for Power Plants. editor / Pertti Auerkari ; Juha Veivo. Espoo : VTT Technical Research Centre of Finland, 2013. pp. 50-62 (VTT Technology; No. 106).
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Wallin, KRW 2013, Similitude of residual stresses and the warm pre stress effect. in P Auerkari & J Veivo (eds), Baltica IX. International Conference on Life Management and Maintenance for Power Plants. VTT Technical Research Centre of Finland, Espoo, VTT Technology, no. 106, pp. 50-62, BALTICA IX - International Conference on Life Management and Maintenance for Power Plants, Helsinki-Stockholm, Finland, 11/06/13.

Similitude of residual stresses and the warm pre stress effect. / Wallin, Kim R. W.

Baltica IX. International Conference on Life Management and Maintenance for Power Plants. ed. / Pertti Auerkari; Juha Veivo. Espoo : VTT Technical Research Centre of Finland, 2013. p. 50-62 (VTT Technology; No. 106).

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

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N2 - A material's apparent fracture toughness, at a specific temperature and loading rate, is affected by two factors: residual stresses and the so called Warm Pre Stress (WPS) effect. Residual stresses are global stresses, independent of a pre-existing flaw. They are generally due either to welding or thermal loads, but can also be introduced by plastic deformation. The WPS is due to a local plastic deformation of the material in front of a crack. The residual stresses can be either detrimental or beneficial, whereas WPS is always beneficial. Despite their different nature and origin, they do show a similitude on the apparent fracture toughness response. This similitude is highlighted here.

AB - A material's apparent fracture toughness, at a specific temperature and loading rate, is affected by two factors: residual stresses and the so called Warm Pre Stress (WPS) effect. Residual stresses are global stresses, independent of a pre-existing flaw. They are generally due either to welding or thermal loads, but can also be introduced by plastic deformation. The WPS is due to a local plastic deformation of the material in front of a crack. The residual stresses can be either detrimental or beneficial, whereas WPS is always beneficial. Despite their different nature and origin, they do show a similitude on the apparent fracture toughness response. This similitude is highlighted here.

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A2 - Auerkari, Pertti

A2 - Veivo, Juha

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Wallin KRW. Similitude of residual stresses and the warm pre stress effect. In Auerkari P, Veivo J, editors, Baltica IX. International Conference on Life Management and Maintenance for Power Plants. Espoo: VTT Technical Research Centre of Finland. 2013. p. 50-62. (VTT Technology; No. 106).