Quality control an dynamic response by on-line monitoring of additive manufacturing
| Reference number | |
| Coordinator | Chalmers Tekniska Högskola AB - Chalmers Tekniska Högskola Inst f Industri- & materialvetensk |
| Funding from Vinnova | SEK 4 740 000 |
| Project duration | November 2022 - November 2025 |
| Status | Completed |
| Venture | The strategic innovation programme SIP LIGHTer |
| Call | Strategic innovation program LIGHTer 2022 |
Important results from the project
The project has demonstrated a methodology for quality control in manufacturing with powder bed fusion - laser beam (PBF-LB) using in-line optical tomography (OT). The methodology has been demonstrated for samples that have undergone fatigue testing (Ni alloy 718, Al alloy AlSi10Mg and previously patented Al alloy AlHS1). Demonstrators for quality-assured lightweight design have been realized. Positive impact of HIP has been demonstrated and mechanisms for defect formation have been mapped.
Expected long term effects
The project has laid foundation for new process control in additive manufacturing. This has been done by methodology and technology for in-line process control for powder bed fusion - laser beam (PBF-LB). The university partners have built knowledge that has been communicated internationally. The industry has built knowledge for future solutions in own activities. Collaboration has been strengthened and created new ways for lightweight design and partners participate in two follow-up projects.
Approach and implementation
The project focused on one mechanism for defect formation in additive manufacturing. Based on previous knowledge, methodology was set where printing with expected differences in quality outcomes were followed by post-processing (heat treatment or HIP) with final evaluation by fatigue testing. This was done for three different materials of industrial interest (Inconel 718, AlSi10Mg, AlHS1) with effective involvement of all. For all materials, demonstrators were manufactured for evaluation.