US 12,487,071 B2
Method for determining a deformation of an area of a part obtained by additive manufacturing
Thibault Ricart, Seyssinet Pariset (FR); Skandar Basrour, Grenoble (FR); Matthieu Museau, Le Pont de Claix (FR); Pascal Robert, Grenoble (FR); Nicolas Béraud, Saint-Martin-d'Hères (FR); and Henri Paris, Grenoble (FR)
Assigned to UNIVERSITE GRENOBLE ALPES, Saint-Martin-d'Hères (FR); INSTITUT POLYTECHNIQUE DE GRENOBLE, Grenoble (FR); and CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE, Paris (FR)
Appl. No. 18/574,283
Filed by UNIVERSITE GRENOBLE ALPES, Saint-Martin-d'Hères (FR); INSTITUT POLYTECHNIQUE DE GRENOBLE, Grenoble (FR); and CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE, Paris (FR)
PCT Filed Jul. 5, 2022, PCT No. PCT/FR2022/051333
§ 371(c)(1), (2) Date Dec. 26, 2023,
PCT Pub. No. WO2023/281201, PCT Pub. Date Jan. 12, 2023.
Claims priority of application No. 2107300 (FR), filed on Jul. 6, 2021.
Prior Publication US 2024/0361118 A1, Oct. 31, 2024
Int. Cl. G01B 7/24 (2006.01); B33Y 40/00 (2020.01)
CPC G01B 7/24 (2013.01) [B33Y 40/00 (2014.12)] 20 Claims
OG exemplary drawing
 
1. A method for determination of a deformation of a predetermined zone of a part obtained by additive manufacturing, the deformation being generated by stress in the part, wherein the method includes:
before stress is applied to the part, positioning a magnetostrictive test piece in a zone representative of the deformation, and
determining the deformation using a sensor configured to measure the magnetic permeability of the magnetostrictive test piece, the deformation being determined as a function of a variation of a magnetic permeability of the magnetostrictive test piece between before and after stress is applied to the part, the sensor including a magnet associated with a coil including a ferrite core, the coil and the magnet being associated with a capacitor connected in parallel with the coil.