Fatigue crack propagation modeling using a local approach to fracture
International audience North Africa, the largest dust source worldwide, accounts for 55% of global continental dust emission [1]. These dusts can be transported over long distance, and significantly impact ocean biogeochemistry in the North Atlantic and the ecosystems of the North Tropical Atlantic...
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ftuniparissaclay:oai:HAL:hal-02332845v1 2024-01-14T10:09:01+01:00 Fatigue crack propagation modeling using a local approach to fracture Modélisation de la propagation de fissure en fatigue par une approche locale de la rupture Voreux, Olivier DMAS, ONERA, Université Paris Saclay (COmUE) Châtillon ONERA-Université Paris Saclay (COmUE) BREST, France 2019-08-26 https://hal.science/hal-02332845 en eng HAL CCSD hal-02332845 https://hal.science/hal-02332845 CFM 2019 https://hal.science/hal-02332845 CFM 2019, Aug 2019, BREST, France FATIGUE CREEP DUCTILE FRACTURE INCREMENTAL DAMAGE LOCAL APPROACH NONLOCAL REGULARIZATION MODELING ELASTO VISCOPLASTICITY CYCLE FLUAGE FATIGUE OLIGOCYCLIQUE RUPTURE ENDOMMAGEMENT FISSURATION FISSURATION FATIGUE NICKEL DUCTILITE PROPAGATION FISSURE [SPI]Engineering Sciences [physics] [PHYS]Physics [physics] [CHIM]Chemical Sciences info:eu-repo/semantics/conferenceObject Conference papers 2019 ftuniparissaclay 2023-12-23T22:27:31Z International audience North Africa, the largest dust source worldwide, accounts for 55% of global continental dust emission [1]. These dusts can be transported over long distance, and significantly impact ocean biogeochemistry in the North Atlantic and the ecosystems of the North Tropical Atlantic Islands, after deposition through biogeochemical processes [2,3]. Yet, the inputs of Saharan dust to the North-Western Atlantic are not precisely measured. In this work, we present time series of dust deposition performed in Guadeloupe, an island situated in the Western North Atlantic Ocean. Atmospheric total deposition was continuously sampled on a weekly basis during three years (2015-2018). Airborne aerosol samples were simultaneously collected during the last 18 months of deposition sampling. Deposition and aerosol samples were analyzed for major and trace elements including rare earth elements (REEs), together with Nd, Pb and Sr isotopes. Compositional analyses mathematical tool [4] was used to study the elemental composition of trace elements and REEs. It showed (i) seasonal and interannual variations of deposition fluxes of major and trace elements, (ii) samples collected during different years present different trace and REEs compositions and also different Nd isotopic signatures, (iii) Saharan dust and sea-salt depositions can represent significant sources of nutritive trace metals (like Mo and Sr) which are important for ecology systems in North-Western Atlantic and Caribbean Islands, (iv) differences were also observed on Pb isotopic ratios between airborne aerosol and deposition samples collected simultaneously, which are likely due to human activities. This long time series will help us to better assess the contribution and impact of Saharan dust to the biogeochemical cycle of trace metals in Western North Atlantic.Another issue arises due to the fact that there is a full coupling between damage and the elasto-viscoplastic behavior. In this case, the stress/strain curve will progressively exhibit a ... Conference Object North Atlantic Archives ouvertes de Paris-Saclay |
institution |
Open Polar |
collection |
Archives ouvertes de Paris-Saclay |
op_collection_id |
ftuniparissaclay |
language |
English |
topic |
FATIGUE CREEP DUCTILE FRACTURE INCREMENTAL DAMAGE LOCAL APPROACH NONLOCAL REGULARIZATION MODELING ELASTO VISCOPLASTICITY CYCLE FLUAGE FATIGUE OLIGOCYCLIQUE RUPTURE ENDOMMAGEMENT FISSURATION FISSURATION FATIGUE NICKEL DUCTILITE PROPAGATION FISSURE [SPI]Engineering Sciences [physics] [PHYS]Physics [physics] [CHIM]Chemical Sciences |
spellingShingle |
FATIGUE CREEP DUCTILE FRACTURE INCREMENTAL DAMAGE LOCAL APPROACH NONLOCAL REGULARIZATION MODELING ELASTO VISCOPLASTICITY CYCLE FLUAGE FATIGUE OLIGOCYCLIQUE RUPTURE ENDOMMAGEMENT FISSURATION FISSURATION FATIGUE NICKEL DUCTILITE PROPAGATION FISSURE [SPI]Engineering Sciences [physics] [PHYS]Physics [physics] [CHIM]Chemical Sciences Voreux, Olivier Fatigue crack propagation modeling using a local approach to fracture |
topic_facet |
FATIGUE CREEP DUCTILE FRACTURE INCREMENTAL DAMAGE LOCAL APPROACH NONLOCAL REGULARIZATION MODELING ELASTO VISCOPLASTICITY CYCLE FLUAGE FATIGUE OLIGOCYCLIQUE RUPTURE ENDOMMAGEMENT FISSURATION FISSURATION FATIGUE NICKEL DUCTILITE PROPAGATION FISSURE [SPI]Engineering Sciences [physics] [PHYS]Physics [physics] [CHIM]Chemical Sciences |
description |
International audience North Africa, the largest dust source worldwide, accounts for 55% of global continental dust emission [1]. These dusts can be transported over long distance, and significantly impact ocean biogeochemistry in the North Atlantic and the ecosystems of the North Tropical Atlantic Islands, after deposition through biogeochemical processes [2,3]. Yet, the inputs of Saharan dust to the North-Western Atlantic are not precisely measured. In this work, we present time series of dust deposition performed in Guadeloupe, an island situated in the Western North Atlantic Ocean. Atmospheric total deposition was continuously sampled on a weekly basis during three years (2015-2018). Airborne aerosol samples were simultaneously collected during the last 18 months of deposition sampling. Deposition and aerosol samples were analyzed for major and trace elements including rare earth elements (REEs), together with Nd, Pb and Sr isotopes. Compositional analyses mathematical tool [4] was used to study the elemental composition of trace elements and REEs. It showed (i) seasonal and interannual variations of deposition fluxes of major and trace elements, (ii) samples collected during different years present different trace and REEs compositions and also different Nd isotopic signatures, (iii) Saharan dust and sea-salt depositions can represent significant sources of nutritive trace metals (like Mo and Sr) which are important for ecology systems in North-Western Atlantic and Caribbean Islands, (iv) differences were also observed on Pb isotopic ratios between airborne aerosol and deposition samples collected simultaneously, which are likely due to human activities. This long time series will help us to better assess the contribution and impact of Saharan dust to the biogeochemical cycle of trace metals in Western North Atlantic.Another issue arises due to the fact that there is a full coupling between damage and the elasto-viscoplastic behavior. In this case, the stress/strain curve will progressively exhibit a ... |
author2 |
DMAS, ONERA, Université Paris Saclay (COmUE) Châtillon ONERA-Université Paris Saclay (COmUE) |
format |
Conference Object |
author |
Voreux, Olivier |
author_facet |
Voreux, Olivier |
author_sort |
Voreux, Olivier |
title |
Fatigue crack propagation modeling using a local approach to fracture |
title_short |
Fatigue crack propagation modeling using a local approach to fracture |
title_full |
Fatigue crack propagation modeling using a local approach to fracture |
title_fullStr |
Fatigue crack propagation modeling using a local approach to fracture |
title_full_unstemmed |
Fatigue crack propagation modeling using a local approach to fracture |
title_sort |
fatigue crack propagation modeling using a local approach to fracture |
publisher |
HAL CCSD |
publishDate |
2019 |
url |
https://hal.science/hal-02332845 |
op_coverage |
BREST, France |
genre |
North Atlantic |
genre_facet |
North Atlantic |
op_source |
CFM 2019 https://hal.science/hal-02332845 CFM 2019, Aug 2019, BREST, France |
op_relation |
hal-02332845 https://hal.science/hal-02332845 |
_version_ |
1788063459182641152 |