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  • Fracture Toughness Measurement by Using Pipe-Ring Specimens [Elektronski vir]
    Gubeljak, Nenad ; Likeb, Andrej ; Matvienko, Yury G.
    Fracture toughness Measurement of thin walled pipe-line with flaw or defect in most critical axial direction is difficult. In this paper the non-standard modified specimens has been proposed for ... simple fracture testing. The comparison between fracture behaviour of single edge notch bending (SENB), compact tension (CT) and pipe-ring specimens with notch and fatigue pre-crack were analysed. In order to determine CTOD-R curve the normalization method by using remote measurement CMOD has been used for all specimens. For non-standard pipe ring pre-cracked specimens the plastic correction eta factor is determined by using finite element method. The stable crack growth initiation was determined also as a crack tip surface strain-relaxation by using stereo-optical grading method. Comparison between CTOD-R curves of all three types of specimens shows quite similar fracture toughness in stable crack initiation range.
    Vir: 20th European Conference on Fracture [Elektronski vir] (Vol. 3, 2014, Str. 1934-1940)
    Vrsta gradiva - prispevek na konferenci ; neleposlovje za odrasle
    Leto - 2014
    Jezik - angleški
    COBISS.SI-ID - 17933078

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    http://ac.els-cdn.com/S2211812814003137/1-s2.0-S2211812814003137-main.pdf?_tid=4a7e48f8-01b4-11e4-af03-00000aacb35f&acdnat=1404283638_3f9ed20bf9f86a1bf0d1688ada784bad
    DOI

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