Calorimetric Studies and Self-Heating Measurements for a Dual-Phase Steel Under Ultrasonic Fatigue Loading
Chapitre d'ouvrage scientifique
Auteur
TORABIAN, NoushinZIAEI-RAD, SaeedDIRRENBERGER, JustinADAMSKI, Frédéric 
RANC, Nicolas FAVIER, VéroniqueRésumé
The objective of the present research is to study the self-heating behavior of a dual-phase (DP) steel under ultrasonic fatigue loading and to investigate the effect of frequency on intrinsic heat dissipation of the material. The steel studied in this work is DP600 commercial DP steel. Fatigue tests were conducted using an ultrasonic fatigue machine at a testing frequency of 20 kHz with flat specimens. An infrared camera was used to measure the mean temperature evolution during the tests. A specific form of heat diffusion equation was adopted in this work to calculate the heat dissipation per cycle from temperature measurements. The variation of this dissipation versus stress amplitude in cyclic loading was also studied.
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Article dans une revue avec comité de lecture; ; ; ;RANC, Nicolas; FAVIER, Véronique (ESIS - Elsevier, 2016)
The aim of the present research was to study the self-heating behavior of a dual-phase steel under ultrasonic fatigue loading for stress amplitudes lower than the conventional fatigue limit. The steel studied in this ...
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Article dans une revue avec comité de lecture; ; ; ;RANC, Nicolas; FAVIER, Véronique (Elsevier, 2016)
The present work employed in situ infrared thermography to investigate the thermal response and dissipative mechanisms of a dual-phase steel under ultrasonic tension-compression fatigue testing. A classical thermal response ...
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Article dans une revue avec comité de lecture; ; ; ;RANC, Nicolas; FAVIER, Véronique (Elsevier, 2017)
The discrepancies observed between conventional and ultrasonic fatigue testing are assessed through the mechanisms of dislocation mobility in BCC metals. The existence of a transition condition between thermally-activated ...
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Article dans une revue avec comité de lecture; ; ;RANC, Nicolas; FAVIER, Véronique (Elsevier, 2014)
The surfaces of commercially pure polycrystalline copper specimens subjected to interrupted 20 kHz fatigue tests in the very high cycle fatigue regime were investigated. The stress amplitude needed to form the early slip ...
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Communication avec acte; ; ;RANC, Nicolas; FAVIER, Véronique; ; SAINTIER, Nicolas; ; ; (Elsevier, 2013)
The DISFAT project is a French project financially supported by the French National Agency for Research (ANR). It aims at a deeper understanding of mechanisms leading to crack initiation in metals and alloys under Very ...