CONFIADIT. ONLINE CONTROL OF LASER ADDITIVE MANUFACTURING PROCESSES BASED ON BISPECTRAL IMAGE (VIS AND IR)
PLACE OF EXECUTION: Boadilla del Monte, Spain.
EXECUTION PERIOD: 22/04/2020-30/09/2022 (30 months)
CDTI and FEDER co-financing: Project supported by the Ministry of Science and Innovation.
The objective of the CONFIADIT project is the development of a new real-time monitoring and control system for laser additive manufacturing processes adapted to new techniques such as those that use high-speed galvo-scanners to direct the laser spot.
This is the case of LAM technologies based on the PBF-LB powder bed, which is being adopted in numerous industrial areas with high added value.
GENERAL OBJECTIVES OF CONFIADIT:
- Development of a prototype for the monitoring and control of laser additive manufacturing processes based on the real-time and simultaneous acquisition of images of the process in two spectral bands: visible and infrared.
- The CONFIADIT prototype will be integrable in a coaxial configuration, on axis, both in new industrial additive manufacturing equipment and in equipment already on the market.
- The prototype will be validated in a relevant environment according to a test plan defined in an initial phase of the project.
SPECIFIC TECHNICAL OBJECTIVES:
At the end of the CONFIADIT project, a prototype of a process monitoring and control system for laser additive manufacturing validated in a relevant environment will be available. To this end, the following partial objectives have been identified:
- Manufacture of an optical adapter that allows the simultaneous obtaining of images of the process area in two spectral bands: Visible (0.4-0.8 microns) and Infrared (1-5 microns).
- Selection and manufacturing/acquisition of sensors. Laser processes are characterized by being very fast. The sensors of the CONFIADIT demonstrator will be high-speed cameras. In the case of the VIS channel, a CMOS camera suitable for the requirements of the process will be selected and acquired. In the case of the infrared channel, a new 128×128 polycrystalline PbSe IR sensor manufactured by NIT will be developed and adjusted to the speed requirements of the application.
- Development of electronics that is capable of acquiring, merging and processing in real time the large amount of process information provided by the sensors.
- Development of software that runs in real time on the developed electronics and that provides control signals for basic process parameters such as laser power or deposit speed.
- Integration of the CONFIADIT system in a laser head in a laser additive manufacturing system (LMD-LB, or PBF-LB powder bed) and validation in additive processes described in a previously defined test plan.