0000000000908820
AUTHOR
David Joannic
Specification analysis and 3D inspection without contact
International audience
3D surfaces automated acquisition using non contact sensor with repect of metrological conditions
International audience
Planification de la trajectoire automatique pour la mesure d'objet 3D sans contact
International audience
Parameters Analysis Influencing 3D Measurement without Contact by Laser Scanner to Make a Compensation Model
International audience; The 3D measurement is more and more important in industrial applications. There are different applications like 3D inspection or reverse engineering. In the both cases, the classical techniques by contact present the advantage of a good accuracy but the costs are expensive because of the slow progress of the measurement. In an other hand, the without contact technologies have a high cadency of points measurement but with a lower accuracy. We present in this study a methodology to estimate the measurement uncertainties and to correct the systematic error. The global error can be separated in random error (in the order of 25 m for the considered laser scanner) and in …
Une approche maîtrisée de la mesure 3D sans contact des pièces mécaniques par scanning laser, a Controlled Approach of the 3D Inspection of Mechanical Parts with Laser Scanner
International audience
Validation of in-vitro strain measurement by Magnetic Resonance Imaging of realistic abdominal aortic aneurism phantom
International audience; Preoperative diagnostic protocols of abdominal aortic aneurysm (AAA) are today mainlybased on the measurement of the aortic maximum diameter. This measurement is insufficient becausethe diameter is not a discriminant variable for predicting the rupture of the aorta. Recent works showthe importance of determining the wall stress both due to the aortic shape, the pressure and the bloodflow. The problem is very complex and requires the implementation of sophisticated models takinginto account the heterogeneity of tissues and the complexity of flow. Then it is essential to validatethe capacity of existing medical imaging systems to provide reliable measurements that will…