Effects of Specimen Diameters on the Distribution of Corrosion Fatigue Cracks

Effects of Specimen Diameters on the Distribution of Corrosion Fatigue Cracks

The distribution of corrosion fatigue cracks observed on the un-notched round specimen surface differs with specimen diameter, especially in the low stress amplitude region. At a constant fatigue life ratio, many long cracks are initiated on the larger specimen, 12 mm (diameter), in comparison with...

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Veröffentlicht in:TRANSACTIONS OF THE JAPAN SOCIETY OF MECHANICAL ENGINEERS Series A 1988/08/25, Vol.54(504), pp.1482-1488
Hauptverfasser: ISHIHARA, Sotomi, SHIOZAWA, Kazuaki, MIYAO, Kazyu
Format: Artikel
Sprache:eng ; jpn
Schlagworte:
Carbon Steel
Corrosion Fatigue
Crack Density
Distribution of Crack Lengths
Fatigue
Specimen Size Effect
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container_issue 504
container_start_page 1482
container_title TRANSACTIONS OF THE JAPAN SOCIETY OF MECHANICAL ENGINEERS Series A
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creator ISHIHARA, Sotomi
SHIOZAWA, Kazuaki
MIYAO, Kazyu
description The distribution of corrosion fatigue cracks observed on the un-notched round specimen surface differs with specimen diameter, especially in the low stress amplitude region. At a constant fatigue life ratio, many long cracks are initiated on the larger specimen, 12 mm (diameter), in comparison with the smaller specimen, 6 mm (diameter). On the other hand, in the high stress amplitude region of corrosion fatigue and fatigue in laboratory air, the distribution of cracks during the fatigue process does not depend on specimen diameters. In the low stress amplitude region of corrosion fatigue, crack growth rate does not show the usual behavior of the dependence of crack length, but shows only the dependence of stress amplitude. This unusual crack growth behavior explains why the distribution of corrosion fatigue cracks in the low stress amplitude region changes with specimen diameters.
doi_str_mv 10.1299/kikaia.54.1482
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source J-STAGE Free; Elektronische Zeitschriftenbibliothek - Frei zugängliche E-Journals
subjects Carbon Steel
Corrosion Fatigue
Crack Density
Distribution of Crack Lengths
Fatigue
Specimen Size Effect
title Effects of Specimen Diameters on the Distribution of Corrosion Fatigue Cracks
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