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Apport des mesures de l'auto-échauffement sous sollicitations cycliques pour la détermination des propriétés en fatigue polycyclique d'un matériau très inclusionnaire
| Content Provider | Semantic Scholar |
|---|---|
| Author | Sire, Stéphane Saad, Selma Ben Doudard, Cédric Calloch, Sylvain |
| Copyright Year | 2011 |
| Abstract | Self heating tests under cyclic loadings have been carried out on puddle iron specimens (end of XIX th century) in order to determine the fatigue properties of thi s material. Since its inclusions ratio is very high (inclusions have a high phosphorus level) and their distributio n s heterogeneous in the ferritic matrix, the ques tion of the definition of a REV (representative elementary volume) arises. The self-heating measurements scatt er is analysed with small cross section specimens. The me an fatigue limit can be estimated. We use a two-sca le probabilistic model in which the yield stress of ea ch site where the microplasticity takes place is re presented by a Weibull law. Mots clefs : fatigue, auto-échauffement, matériau inclusionnaire |
| File Format | PDF HTM / HTML |
| Alternate Webpage(s) | http://documents.irevues.inist.fr/bitstream/handle/2042/46716/cfm2011_442.pdf;jsessionid=41EA7686CBA65C1847928A84F637D994?sequence=1 |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
