Papers by Marielle Dargaud
Advanced Optical Materials, Aug 30, 2016
Journal of the Mechanics and Physics of Solids, 2021
HAL is a multidisciplinary open access archive for the deposit and dissemination of scientific re... more HAL is a multidisciplinary open access archive for the deposit and dissemination of scientific research documents, whether they are published or not. The documents may come from teaching and research institutions in France or abroad, or from public or private research centers. L'archive ouverte pluridisciplinaire HAL, est destinée au dépôt et à la diffusion de documents scientifiques de niveau recherche, publiés ou non, émanant des établissements d'enseignement et de recherche français ou étrangers, des laboratoires publics ou privés. Distributed under a Creative Commons Attribution-NonCommercial| 4.0 International License
Original or unprocessed data is provided in support of the article “Bio-compatible and Sustainabl... more Original or unprocessed data is provided in support of the article “Bio-compatible and Sustainable Optical Strain Sensors for Large-area applications”. The data is structured into six folders, each correlating to a specific data type presented in the published article. The folders are named according to the figures, which the contained data were taken from, except for the “supplementary” folder (data of 6 figures in one folder). All data are saved as plain text (csv format) with a file name indicating the corresponding figure and the nature of data, for example spectral data of Figure 1a would be stored in folder “fig1” with a file name of “a_spectra.txt”. fig1: Intensity values of the spectra shown in Fig 1f and their corresponding wavelength are provided. fig2: Intensity values of the spectra shown in Fig 2a-c and their corresponding wavelength are provided. fig3: Peak wavelength value shown in Fig 3b and their corresponding angle of detection are provided. fig4: Pitch values show...
Journal of Dynamic Behavior of Materials, 2021
Silicon carbide ceramics are widely used for armor protection due to their high compressive stren... more Silicon carbide ceramics are widely used for armor protection due to their high compressive strength, high hardness and low density. In the present study, an experimental technique based on the plate-impact technique is developed to measure the tensile strength of ceramic materials. As the strength of ceramics under dynamic loading is highly sensitive to the strain rate, the effort was made to maintain a constant strain rate loading at the failure location. Numerical simulations were used to design several geometries of wavy-machined flyer-plates, which generate a pulse-shaped compressive wave upon impact, with smoothed rising and falling times ranged from 0.65 to 1 $$\upmu$$ μ s. Such shockless plate-impact experiments were performed on a SiC ceramic at impact velocities set between 200 and 450 m/s. Thanks to laser interferometry analysis, the target rear face velocity provides a measurement of the material spall strength at a given strain-rate loading. The strain rate in the failure zone was evaluated via elasto-plastic numerical simulations, using the pulse loading and spall strength determined experimentally. With an appropriate design of the flyer-plate, the plate-impact technique is found to properly allow a well-controlled strain-rate loading around 10 $$^4$$ 4 -10 $$^5$$ 5 s $$^{-1}$$ - 1 with relatively long rising time to be reached. This work is expected to provide a suitable tool to investigate the high strain-rate behavior of ceramic materials.
HAL (Le Centre pour la Communication Scientifique Directe), Oct 8, 2019
Advanced Optical Materials, 2016
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Papers by Marielle Dargaud