Ultrasonic fatigue tests at high temperature on an austenitic steel
Article dans une revue avec comité de lecture
Auteur
WAGNER, DCAVALIERI, F.JBATHIAS, Claude 
RANC, NicolasRésumé
The objective of this paper is to study the gigacycle fatigue behavior of an austenitic steel at temperatures of 600 °C and 700 °C under fully reverse loading (R=−1). Numerical simulation by finite element method (FEM) was used to design the specimens and to analyze the effects of the variation in the dynamic Young modulus with temperature from measurements of the ultrasonic resonance frequency. Finally, new stress-life curves for this material are presented for a lifetime range from 105 to 109 cycles at room temperature, 600 °C and 700 °C.
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Article dans une revue avec comité de lecture; ; ;RANC, Nicolas (Wiley-Blackwell, 2010)
In this paper, the study of the temperature variation during fatigue tests was carried out on different materials (steels and aluminium alloys). Tests were performed at ambient temperature using a piezoelectric fatigue ...
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Article dans une revue avec comité de lecture; ; ; ; ; ; ;RANC, Nicolas; FAVIER, Véronique (Elsevier, 2016)
In this paper, the main results obtained in the framework of a National French Agency project called DISFAT, standing for “Dissipation in Fatigue”, are presented. The project was dedicated to the microplastic mechanisms ...
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Article dans une revue avec comité de lecture; ; ;RANC, Nicolas (Elsevier, 2016)
The dynamic strain aging (DSA) phenomenon that occurs in some materials under certain temperature and strain rate conditions can cause plastic strain localization in the form of Portevin-Le Chatelier (PLC) bands. ...
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Article dans une revue avec comité de lecture; ;RANC, Nicolas (Trans Tech Publications, 2015)
Tests were performed on two Carbon-Manganese steels (A42 and A48 steels, French standard) in the gigacycle fatigue domain thanks to a piezoelectric fatigue machine working at 20000Hz. During the tests, temperature recordings ...
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Article dans une revue avec comité de lectureSAINTIER, Nicolas; PALIN-LUC, Thierry; ; ; ; ; ; (Wiley-VCH Verlag, 2011)
Load controlled fatigue tests were performed up to 107 cycles on flat notched specimens (Kt =2.5) under constant amplitude and variable amplitude loadings with and without periodical overloads. Two materials are studied: ...