| People | Locations | Statistics |
|---|---|---|
| Naji, M. |
| |
| Motta, Antonella |
| |
| Aletan, Dirar |
| |
| Mohamed, Tarek |
| |
| Ertürk, Emre |
| |
| Taccardi, Nicola |
| |
| Kononenko, Denys |
| |
| Petrov, R. H. | Madrid |
|
| Alshaaer, Mazen | Brussels |
|
| Bih, L. |
| |
| Casati, R. |
| |
| Muller, Hermance |
| |
| Kočí, Jan | Prague |
|
| Šuljagić, Marija |
| |
| Kalteremidou, Kalliopi-Artemi | Brussels |
|
| Azam, Siraj |
| |
| Ospanova, Alyiya |
| |
| Blanpain, Bart |
| |
| Ali, M. A. |
| |
| Popa, V. |
| |
| Rančić, M. |
| |
| Ollier, Nadège |
| |
| Azevedo, Nuno Monteiro |
| |
| Landes, Michael |
| |
| Rignanese, Gian-Marco |
|
Chrysochoos, André
Institut de Mathématiques de Marseille
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (32/32 displayed)
- 2023Thermal and energy analysis of DMTA testscitations
- 2019Effect of thermomechanical couplings on viscoelastic behaviour of polystyrene
- 2018Viscous dissipation and thermo-mechanical coupling effect in the polymer
- 2018Effect of time and thermo-mechanical couplings on polymers
- 2015Thermomechanical behavior of PA6.6 composites subjected to low cycle fatiguecitations
- 2015Dissipation Assessments During Dynamic Very High Cycle Fatigue Testscitations
- 2014Influence of relative humidity and loading frequency on the PA6.6 cyclic thermomechanical behavior: Part I. mechanical and thermal aspectscitations
- 2014Energy Dissipation and Self-Heating due to Microplastic Deformation Mechanisms at Very High Cycle Fatigue for Single-Phase Ductile Metals
- 2013Energy analysis of the thermomechanical behavior of reinforced polyamides
- 2013Very high cycle fatigue for single phase ductile materials: microplasticity and energy dissipation
- 2013Very High Cycle Fatigue for single phase ductile materials: slip band appearance criterioncitations
- 2013Dissipative and microstructural effects associated with fatigue crack initiation on an Armco ironcitations
- 2012Study of Fatigue Crack Initiation Mechanism on an Armco Iron by Dissipation Assessments and Microstructural Observations
- 2011Microplasticity and energy dissipation in very high cycle fatigue
- 2011Microplasticity and energy dissipation in very high cycle fatigue
- 2011Influence of Dissipated Energy on Shear Band Spacing in HY100 Steelcitations
- 2011Microplasticity evolution in polycrystalline pure copper subjected to very high cycle fatigue
- 2011Microplasticity in polycrystalline pure copper subjected to very high cycle fatigue: thermal and microstructural analyses
- 2010Energy analysis of phase change localization in monocrystalline shape memory alloy
- 2009Local energy analysis of HCF fatigue using DIC & IRT
- 2008Energy Balance of a Semicrystalline Polymer During Local Plastic Deformationcitations
- 2008Infrared image processing for the calorimetric analysis of fatigue phenomenacitations
- 2007Thermographic analysis of fatigue dissipation properties of steel sheets
- 2007Analysis of heat sources accompanying the fatigue of 2024 T3 aluminium alloyscitations
- 2007Influence of dissipated energy on shear band spacing in HY100 steel
- 2006On the shear band spacing in stainless steel 304Lcitations
- 2006On the shear band spacing in stainless steelcitations
- 2005Thermomechanical couplings and localization phenomena in polymers and shape memory alloys
- 2002Multiscale thermomechanical approaches to SMA behaviour
- 2001Influence of the thermomechanical coupling on the propagation of a phase change frontcitations
- 2001Thermal and dissipative effects accompanying Lüders band propagationcitations
- 2001Analysis of strain localization during tensile tests by digital image correlationcitations
Places of action
| Organizations | Location | People |
|---|
document
Very High Cycle Fatigue for single phase ductile materials: slip band appearance criterion
Abstract
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 High Cycle Fatigue loading (VHCF). The VHCF regime is associated with stress magnitudes lower than the conventional fatigue limit and as a result, numbers of cycles higher than 109. Tests were carried out using an ultrasonic technique at loading frequency of 20 kHz. In the case of pure copper polycrystals, we previously showed that slip band (SB) activity and intrinsic dissipation were closely related.Dissipation and slip band amount increased with the number of cycles. At very small stress amplitudes, no slip band appeared at the specimen surface up to 108 cycles but the material was found to dissipate energy. These results revealed that the material never reached a steady state and so could break at higher number of cycles. In this paper, the morphology and the location of slip bands were characterized. Different types of slip bands depending on the stress amplitudes appeared at the specimen surface. The stress amplitude required to show the first slip bands decreases with the number of cycles. It is twice lower than the stress amplitude required to break the specimen for the same number of cycles. At the smallest stress amplitudes, slip bands were mostly found at twin boundaries. Quasi 3D finite element simulations taking into account the polycrystalline nature of the material emphasized the key role of the elastic anisotropy in slip band initiation. A criterion for slip band appearance was finally proposed.