Thermographic Analysis of Fatigue Dissipation Properties of Steel Sheets

This paper presents several properties of heat source fields accompanying the high‐cycle fatigue of a dual‐phase steel grade. Heat sources were derived from thermal data provided by an infrared focal plane array camera. An especially developed image processing estimates separately the thermoelastic...

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Bibliographic Details
Published inStrain Vol. 43; no. 3; pp. 273 - 279
Main Authors Berthel, B., Wattrisse, B., Chrysochoos, A., Galtier, A.
Format Journal Article
LanguageEnglish
Published Oxford, UK Blackwell Publishing Ltd 01.08.2007
Wiley-Blackwell
Subjects
dissipation
Engineering Sciences
fatigue
infrared thermography
steel
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Summary:This paper presents several properties of heat source fields accompanying the high‐cycle fatigue of a dual‐phase steel grade. Heat sources were derived from thermal data provided by an infrared focal plane array camera. An especially developed image processing estimates separately the thermoelastic coupling source amplitude and the mean dissipation per cycle. Our experiments underline that dissipation sources are heterogeneous and this forms the beginning of the fatigue test. They also point out a linear evolution of the mean dissipation per cycle as a function of the loading frequency for a given stress range and a given loading ratio.
Bibliography:istex:4B10BC4D2D756998B4E686F7D6ABDC2B7E76608F
ArticleID:STR349
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ObjectType-Article-2
SourceType-Scholarly Journals-1
ObjectType-Feature-1
content type line 23
ISSN:0039-2103
1475-1305
DOI:10.1111/j.1475-1305.2007.00349.x