Tohoku Univ. Technology：Simulation for metal additive manufacturing：T25-065
Enables high-speed numerical computation that can be used in parallel with additive manufacturing processes.
The development of a multi-scale numerical analysis technique for the melting and solidification phenomena of metal powders in metal lamination processes, such as powder bed fusion and electron beam melting, is progressing. Conventionally, the analysis has been carried out based on equations based on physical phenomena. However, the calculation load increases as the calculation becomes more precise, and it is difficult to calculate the whole structure. In order to reduce the load, there is a method to average microstructural information such as particle size distribution, phase fraction, and crystal orientation distribution. However, it is difficult to predict the formation behavior of micro defects such as unmelted powder, porosity, and cracks. The present invention solves the problem by replacing a part of the numerical analysis process with a surrogate model based on machine learning, and enables numerical analysis on the scale of the whole shaped object. By effectively integrating the macroscale analysis and the surrogate model, multi-scale analysis is realized which avoids loss of microstructural information while suppressing the computational load. By this, the computational load is reduced to 1/10, and the whole shaped object can be calculated.
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The revenue generated from technology transfer is reinvested as new research funding for universities and researchers, and is utilized to create further research outcomes. To ensure the smooth operation of this cycle, known as the "Intellectual Creation Cycle," we will vigorously promote technology transfer. The types of seeds we handle include patents, know-how, databases, and programs. We have established a collaborative framework by signing basic technology transfer agreements with the following universities (as of June 1, 2025): Tohoku University, Hirosaki University, Iwate University, Akita University, Fukushima University, Yamagata University, Tohoku Gakuin University, Iwate Medical University, Fukushima Medical University, Aizu University, Miyagi University, Hokkaido University, Muroran Institute of Technology, and Showa Medical University.
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