Measurement and Imaging in Mechanical R&D

Field measurements are increasingly used in engineering, particularly in mechanics. The aim of this module is to present the basics of different imaging methods using image interpretation models of increasing complexity.

We begin by defining the operating principles of imaging devices, then we present some mathematical morphology tools in order to extract statistical information on quantities of a geometric nature.

We then discuss infrared thermography methods using two interpretation models: camera calibration and thermal problem inversion to identify heat sources.

Image correlation methods are finally presented, with an emphasis on the various underlying interpretation models (camera, transformation, optical flow conservation, likelihood criterion).The course ends with a comparison between experimental measurements and a digital model using a finite element model registration method. The theoretical courses are supported by practical sessions that allow students to apply the processing methods and illustrate the influence of the main analysis parameters.

• Understand the operating principles of imaging devices
• Knowing some mathematical morphology tools in order to extract statistical information on geometric quantities
• Understand the infrared thermography methods used in the thermomechanics of materials.
• Knowing how to build a calibration model for the IR camera
• Raise awareness of the reversal of the thermal problem in order to access heat sources.
• Understand the fundamentals of the Digital Image Correlation method, with an emphasis on the various underlying interpretation models (camera, transformation, optical flow conservation, likelihood criterion).
• Knowing how to compare experimental measurements and a digital model by implementing a finite element model recalibration method
• Know how to apply these measurement and processing methods during practical sessions, illustrating the influence of the main analysis parameters.

Finite element simulation

HAY501Y Strength of Materials

HAY503Y Rheology of Materials

CCI

Recommended prerequisites:

 Coupled Mechanical Behaviors I (Polytech EU)

 Coupled Mechanical Behaviors II (Polytech EU)