US System Corrects 3D Printing Errors Mid-Process

Why this is here: The system can detect and correct temperature differences of only a few degrees, a critical factor in preventing ruined composite prints.

Scientists at Oak Ridge National Laboratory in Tennessee recently developed a smart tool that fixes defects during 3D printing. The system uses computer vision, sensors, and machine learning to monitor and adjust composite material printing in real time. Engineers often use large industrial 3D printers to create parts for vehicles, aircraft, and construction, but temperature changes and print speed can easily weaken structures or ruin entire prints.

The new tool tracks nozzle movement, print speed, and material temperature with thermal cameras. When the system detects cooling issues, it autonomously adjusts the print speed to maintain optimal conditions. Testing on a hexagonal structure larger than a truck tire showed the tool corrected temperature drops of roughly 30 percent by increasing printing speed.

The technology functions without retraining for new designs and adapts to different printers and materials. Researchers also built a digital twin to virtually test materials and techniques before factory implementation. Further work is needed to scale the system for diverse manufacturing needs.