| People | Locations | Statistics |
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| Naji, M. |
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| Motta, Antonella |
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| Aletan, Dirar |
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| Mohamed, Tarek |
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| Ertürk, Emre |
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| Taccardi, Nicola |
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| Kononenko, Denys |
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| Petrov, R. H. | Madrid |
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| Alshaaer, Mazen | Brussels |
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| Bih, L. |
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| Casati, R. |
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| Muller, Hermance |
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| Kočí, Jan | Prague |
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| Šuljagić, Marija |
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| Kalteremidou, Kalliopi-Artemi | Brussels |
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| Azam, Siraj |
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| Ospanova, Alyiya |
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| Blanpain, Bart |
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| Ali, M. A. |
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| Popa, V. |
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| Rančić, M. |
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| Ollier, Nadège |
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| Azevedo, Nuno Monteiro |
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| Landes, Michael |
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| Rignanese, Gian-Marco |
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Remes, Heikki
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (31/31 displayed)
- 2024Local relaxation of residual stress in high-strength steel welded joints treated by HFMIcitations
- 2024Strain-based analysis on the influence of local undercut geometry on fatigue crack initiation lifecitations
- 2024Experimental investigation and modelling of the nonlinear creep behaviour of additive-manufactured carbon fibre-reinforced polyethylene terephthalate (CF-PET).citations
- 2023On the Short-Term Creep and Recovery Behaviors of Injection Molded and Additive-Manufactured Tough Polylactic Acid Polymercitations
- 2023Fatigue damage process of additively manufactured 316 L steel using X-ray computed tomography imagingcitations
- 2023A novel method for measurements of microstructurally small fatigue crack growth using digital image correlationcitations
- 2023Local weld geometry-based characterization of fatigue strength in laser-MAG hybrid welded jointscitations
- 2023Study of cyclic crack-tip opening displacement of microstructurally small fatigue crack using digital image correlationcitations
- 2022EBSD characterisation of grain size distribution and grain sub-structures for ferritic steel weld metalscitations
- 2022Optimizing the Voce–Chaboche Model Parameters for Fatigue Life Estimation of Welded Joints in High-Strength Marine Structurescitations
- 2022Influence of microstructural deformation mechanisms and shear strain localisations on small fatigue crack growth in ferritic stainless steelcitations
- 2022Experimental Investigations on Stiffened and Web-core Sandwich Panels Made for Steel under Quasi-Static Penetrationcitations
- 2020Emerging Challenges for Numerical Simulations of Quasi-Static Collision Experiments on Laser-Welded Thin-Walled Steel Structurescitations
- 2020Fatigue strength modelling of high-performing welded jointscitations
- 2020Quantitative Characterization of the Spatial Distribution of Corrosion Pits Based on Nearest Neighbor Analysiscitations
- 2020The influence of interacting small defects on the fatigue limits of a pure iron and a bearing steelcitations
- 2019Optimisation of passenger ship structures in concept design stagecitations
- 2019Full-field Strain Measurements for Microstructurally Small Fatigue Crack Propagation Using Digital Image Correlation Methodcitations
- 2018Fatigue strength of high-strength steel after shipyard production process of plasma cutting, grinding, and sandblastingcitations
- 2018Local strain energy based fatigue assessment of cruciform welded joints: Experimental data analysis and influence of hot-dip galvanization
- 2018Microstructure and fatigue properties of friction stir welded high-strength steel platescitations
- 2017Influence of nonsymmetric steel sandwich panel joints on response and fatigue strength of passenger ship deck structures
- 2017Fatigue strength of laser-welded foam-filled steel sandwich beamscitations
- 2017Microporosity and statistical size effect on the fatigue strength of cast aluminium alloys EN AC-45500 and 46200citations
- 2017Synthesis of experimental testing and fatigue behavior of laser stake-welded T-joints on medium-high cycle fatigue rangecitations
- 2017The effect of interacting small defects on the fatigue limit of a medium carbon steelcitations
- 2017Allowable stresses in high-frequency mechanical impact (HFMI)-treated joints subjected to variable amplitude loadingcitations
- 2017Fatigue strength evaluation of small defect at stress concentrationcitations
- 2016Characterisation of local grain size variation of welded structural steelcitations
- 2014Influence of grain size distribution on the Hall–Petch relationship of welded structural steelcitations
- 2008Strain-based approach to fatigue strength assessment of laser-welded joints ; Laserhitsatun liitoksen väsymislujuuden arviointi venymämenetelmällä
Places of action
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article
Microporosity and statistical size effect on the fatigue strength of cast aluminium alloys EN AC-45500 and 46200
Abstract
This paper investigates the fatigue strength of two cast aluminium alloys, EN AC-45500 and 46200, dealing with the influence of microporosity and the statistical size effect. Small-scale round specimens are extracted from cylinder heads and crank cases as typical cast components in automotive industry. Uniaxial fatigue tests under alternating tension/compression loading are performed. Local microstructural properties, such as second dendrite arm spacing and microporosity, are characterized by means of metallography, fracture surface analysis utilizing scanning electron microscopy, and X-ray computed tomography. The measurements reveal significant differences in microporosity and microstructure depending on the extraction position and specimen type. These findings are reflected by the experimental test results showing that the microporosity majorly affects the fatigue behaviour with a maximum difference in fatigue resistance at ten million load-cycles of up to 39% in case of the EN AC-45500 specimens. Additional experiments involving two different EN AC-46200 specimen types exhibiting unequal highly-stressed volumes demonstrate a reduction of the high-cycle fatigue strength by 8% caused by the statistical size effect. Fatigue strength assessment incorporates the application of the model by Tiryakioğlu based on the extreme value distribution of the micropore sizes by Gumbel, as well as the √area approach by Murakami. The evaluated results agree well to the fatigue tests enabling a local fatigue strength assessment under consideration of manufacturing process dependent material characteristics.