Quantitative fractography of fish-eye crack formation under bending-torsion fatigue

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26210%2F10%3APU85475" target="_blank" >RIV/00216305:26210/10:PU85475 - isvavai.cz</a>

Result on the web

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DOI - Digital Object Identifier

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Result language

angličtina

Original language name

Quantitative fractography of fish-eye crack formation under bending-torsion fatigue

Original language description

The paper presents results of the fractographical analysis of fish-eye cracks that were formed in plasmanitrided steel specimens under symmetrical bending, symmetrical torsion and biaxial in-phase bending-torsion loading combinations. Due to higher strength and compressive residual stresses introduced by plasma nitriding procedure, the subsurface fish-eye cracks were initiated inside the specimen bulk as a dominant failure mechanism. The geometrical characteristics of the fish-eye cracks (the radial asymmetry, the average size and the elliptical coefficient) were studied in the relation to the fish-eye crack location, the loading regime and the fatigue life. Both the ompressive residual stresses and the bending-torsion loading gradients were taken intoaccount when discussing the results. Besides the well known fact that the nitrided surface layer reduces the crack growth rate, the study revealed that the average size of the fish-eye crack increases with both the distance from the free

Czech name

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Czech description

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Type

J_x - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)

CEP classification

JL - Fatigue and fracture mechanics

OECD FORD branch

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Project

<a href="/en/project/GP106%2F08%2FP366" target="_blank" >GP106/08/P366: 3D analysis of surface morphology generated by fatigue</a><br>

Continuities

Z - Vyzkumny zamer (s odkazem do CEZ)

Publication year

2010

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

INTERNATIONAL JOURNAL OF FATIGUE

ISSN

0142-1123

e-ISSN

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Volume of the periodical

32

Issue of the periodical within the volume

6

Country of publishing house

GB - UNITED KINGDOM

Number of pages

8

Pages from-to

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UT code for WoS article

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EID of the result in the Scopus database

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