The Original Method for Assessment of Residual Stresses in Reinforced Surface Layers

Kód výsledku v IS VaVaI

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Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

The Original Method for Assessment of Residual Stresses in Reinforced Surface Layers

Popis výsledku v původním jazyce

An original method was recently developed for an assessment of residual stresses in case-hardened steels based on S-N curves of hardened and virgin samples along with the measurement of location of fish-eye crack centres. This method is applicable only when the surface of virgin specimens is sufficiently smooth to avoid the initiation of fatigue cracks from large surface defects. A systematic study focused on identification of the applicability range was started using specimens with extremely rough surfaces finished by turning. The analysis yielded compressive stresses up to 700 MPa at the hardened surface and high tensile stresses up to 500 MPa in the specimen bulk. The most probable location of fish-eye centres was, however, predicted to be in a significantly higher depth than that found in the real specimens. This could be attributed to the large surface damage induced by turning which, therefore, lies beyond the acceptable range of surface machining.

Název v anglickém jazyce

The Original Method for Assessment of Residual Stresses in Reinforced Surface Layers

Popis výsledku anglicky

An original method was recently developed for an assessment of residual stresses in case-hardened steels based on S-N curves of hardened and virgin samples along with the measurement of location of fish-eye crack centres. This method is applicable only when the surface of virgin specimens is sufficiently smooth to avoid the initiation of fatigue cracks from large surface defects. A systematic study focused on identification of the applicability range was started using specimens with extremely rough surfaces finished by turning. The analysis yielded compressive stresses up to 700 MPa at the hardened surface and high tensile stresses up to 500 MPa in the specimen bulk. The most probable location of fish-eye centres was, however, predicted to be in a significantly higher depth than that found in the real specimens. This could be attributed to the large surface damage induced by turning which, therefore, lies beyond the acceptable range of surface machining.

Druh

D - Stať ve sborníku

CEP obor

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OECD FORD obor

20306 - Audio engineering, reliability analysis

Projekt

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Návaznosti

S - Specificky vyzkum na vysokych skolach

Rok uplatnění

2018

Kód důvěrnosti údajů

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

Název statě ve sborníku

26th International Conference on Metallurgy and Materials

ISBN

978-80-87294-79-6

ISSN

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e-ISSN

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Počet stran výsledku

6

Strana od-do

1315-1320

Název nakladatele

Tanger

Místo vydání

Ostrava

Místo konání akce

Brno

Datum konání akce

24. 5. 2017

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

000434346900211