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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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Griffin, James. M.
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (9/9 displayed)
- 2024Evaluation of the Embrittlement in Reactor Pressure-Vessel Steels Using a Hybrid Nondestructive Electromagnetic Testing and Evaluation Approachcitations
- 2023Friction and Wear in Stages of Galling for Sheet Metal Forming Applicationscitations
- 2022Analysis of Acoustic Emissions for Determination of the Mechanical Effects of Scratch Testscitations
- 2022Improving mechanical properties and processability of a very high T g epoxy amine network via anti‐plasticizer fortificationcitations
- 2022The Toughening of Highly Crosslinked Epoxy Networks using Core-Shell Rubber Particles
- 2021Cure Kinetics and Network Development of a Very High Tg Naphthalene-Based Epoxy Amine Networkcitations
- 2021Application of machine learning for acoustic emissions waveform to classify galling wear on sheet metal stamping toolscitations
- 2021Analysis of magnetic nondestructive measurement methods for determination of the degradation of reactor pressure vessel steelcitations
- 2019Understanding galling wear initiation and progression using force and acoustic emissions sensorscitations
Places of action
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article
Analysis of Acoustic Emissions for Determination of the Mechanical Effects of Scratch Tests
Abstract
Acoustic Emission (AE) is a promising technique for measuring tool wear online and in real time. In this work, scratch tests were conducted to better understand the “pre-wear” AE response based on loading conditions that were not sufficient to generate galling. The scratch tests used the same type of indenter against two different sheet materials: aluminum and steel. The results showed that AE parameters such as the mean frequency, Centroid frequency and Shannon entropy outperformed other frequency domain techniques by discriminating between the two sheet materials in scratch tests. From the literature, the frequency region of interest was expected to be sub 300 kHz. However, in this study, activity below this threshold was found to be noise, whereas distinct frequencies were found at much higher frequencies than expected. These results are compared against single grit “SG” tests of both mild steel- and nickel-based superalloys to allow comparison of the two test methods and materials used. This comparison showed that the SG tests excited the acoustic emission in ways in which the scratch tests did not. Another factor when using acoustic emissions to monitor sheet metal forming is the differences obtained in energy–frequency mapping, where many report the galling phenomena between a certain amplitude and frequency range. Such results are specific to the setup and the materials/geometries used. Further work presented here compares different scratch tests where energy–frequency mapping is different for different materials/geometries.