Electromagnetic characterization of 3D-printed structures (EKAS-3D)

Purpose and goal:

The project aims to identify algorithms and data for non-destructive testing of 3D printed structures. A suitable algorithm based on an identity between measured scattering data and a sensitivity measure in the volume of the sample based on simulations of a reference object has been identified and investigated numerically. The results show good possibilities for realizing a measurement system with a fast enough response time to provide input data to a digital twin in production control.

Expected results and effects:

The project results demonstrate that a measurement system can be designed to determine deviations in electromagnetic properties from a reference case in a 3D printed structure. With the help of pre-computed simulations of the reference object, a quick evaluation of the position, shape and degree of deviations can be determined, and with the help of measurements on a physical reference object, additional accuracy can be obtained. This makes the method well suited as part of production control of electromagnetic properties.

Approach and implementation:

The project has been carried out as part of a doctoral project at Lund University. Participating industry contributed with problem formulation, project management and feedback at the regular project meetings, which, in addition to physical visits in Lund by the project manager, have been held as video meetings to reduce time and cost of travel. The collaboration has worked well, where the industry´s needs have been clearly communicated and demonstrated relevance for the developed solution.