Measurement of Physical Quantities

Upon completion of this course, students shall:

• Understand the building mechanisms of volumes and surfaces during laser/matter interaction
• Be able to select the proper temperature measuring instrument to control laser/matter interaction based on optical diagnosis.
• Be able to propose a complete surface characterization workflow (measuring equipment and strategy, filtering technique, roughness parameters) adapted to an industrial application.

1. Radiation (4h) a. Basics, Definitions, Quantities, Theories
2. Laser based processes to build objects (and surfaces) (8h) a. Laser technologies b. Study and understand laser/matter interaction c. Link structure and material properties, and especially understand laser effects d. Temperature fiels at the laser/matter interaction and measurements
3. Temperature measurements to control the building process by laser (8h) a. Infrared pyromety b. CCD camera
4. Surface topography acquisition and data treatment (8h) a. Introduction b. Surface topography acquisition: measuring equipment principles and limits c. Filtering techniques d. Roughness parameters and areal parameters e. Case study: analysis of research data