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The effective fracture toughness of structural components obtained with the blend rule
1998 (English)In: Nuclear Engineering and Design, ISSN 0029-5493, E-ISSN 1872-759X, Vol. 182, no 2, p. 123-129Article in journal (Refereed) Published
Abstract [en]

The blend rule for the effective fracture toughness of a layered material was originally derived from the special case of a through crack in a globally elastic material and later extended to accomodate non-linear behaviour. It is now derived from a general case by considering material elements of finite size and of different toughness along and around the tip of a crack. Experimental results obtained with an inhomogeneous ordinary structural steel which support the blend rule are presented. It is shown that the effective fracture toughness governs the load-bearing capacity of a cracked full-scale structure. Some further results found in the literature for the heat-affected zone material of a high-strength microalloyed quenched and tempered structural steel and computational results for a structural steel typical of a nuclear pressure vessel are shown to support the blend rule.

Place, publisher, year, edition, pages
1998. Vol. 182, no 2, p. 123-129
National Category
Applied Mechanics
Research subject
Solid Mechanics
Identifiers
URN: urn:nbn:se:ltu:diva-3312DOI: 10.1016/S0029-5493(97)00355-5Local ID: 11e5ea20-bb5b-11db-b560-000ea68e967bOAI: oai:DiVA.org:ltu-3312DiVA: diva2:976169
Note
Godkänd; 1998; 20070131 (cira)Available from: 2016-09-29 Created: 2016-09-29 Last updated: 2017-11-24Bibliographically approved

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