Publications by authors named "Raphael Payet"
Towards a surface metric to measure the dustiness of nanomaterial powders.
Environ Sci Process Impacts
March 2023
Article Synopsis
- - The study emphasizes the growing importance of dustiness methods in evaluating worker exposure to nanomaterials, suggesting that current European standards focus too much on mass-based dustiness indices while overlooking the significance of surface area.
- - The researchers propose a new methodology that ties the external specific surface area of nanomaterials to their aerosolized form, demonstrating this equivalence across five different industrially used nanomaterials.
- - By introducing a surface-based dustiness index, the study argues that this approach is more precise and could reshape how powders are ranked for toxicity, potentially influencing workplace safety standards in the future.
This study aims to characterize airborne particles emitted from a metal additive manufacturing machine and related levels of occupational exposure. To achieve this, a complete measurement methodology was deployed around a direct energy deposition machine. Different operating conditions were investigated, based on configurations of two materials and two injection nozzles.
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