Contribution of Kinematical and Thermal Full-field Measurements for Identification of High Cycle Fatigue Properties of Steels

  • R. Munier
  • C. Doudard
  • S. Calloch
  • B. Weber
Conference paper
Part of the Conference Proceedings of the Society for Experimental Mechanics Series book series (CPSEMS)


Using kinematical and thermal full-field measurements for identification of mechanical parameters has become a very promising area of experimental mechanics. The purpose of this work is to extend the use of non-conventional tests and full field measurements (kinematical and thermal) to the identification of the fatigue properties of a dual-phase steel. A particular attention is paid to the influence of plastic pre-strain on the fatigue limit. Indeed, an analytical approach is proposed to define the geometry of the specimen permitting to obtain a constant gradient of plastic strain within the zone of interest after a monotonic pre-strain. Then, a self-heating test under cyclic loading is carried out on the pre-strained specimen. During this cyclic test, the thermal field is measured using an infrared camera. Finally, a suitable numerical strategy is proposed to identify a given thermal source model taking into account the influence of a plastic pre-strain. The results show that, with the non-conventional test and the procedure developed in this work, the influence of a range of plastic pre-strain on fatigue properties can be identified by using only one specimen. It is worth noting that a great number of specimens is required to determine this effect by using classical fatigue campaign.


Digital Image Correlation Fatigue Limit Fatigue Property Steel DP600 Monotonic Tensile Test 
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Copyright information

© Springer Science+Businees Media, LLC 2011

Authors and Affiliations

  • R. Munier
    • 1
    • 2
  • C. Doudard
    • 1
  • S. Calloch
    • 1
  • B. Weber
    • 2
  1. 1.LBMS EA4325, ENSTA Bretagne / UBO / ENIBBrest Cedex 9France
  2. 2.ArcelorMittal Maizières Research & DevelopmentMaizières-les-Metz CedexFrance

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