David John Hoelzle

Title: David John Hoelzle: Innovator in Powder Bed Fusion Technology

Introduction

David John Hoelzle is a prominent inventor based in Columbus, OH (US), known for his significant contributions to the field of manufacturing technology. With a total of 11 patents, he has made remarkable advancements in the area of powder bed fusion processes. His work focuses on improving the internal temperature control of parts during manufacturing, which is crucial for ensuring quality and precision.

Latest Patents

Hoelzle's latest patents include innovative methods for model predictive control (MPC) aimed at managing internal temperature distributions within parts manufactured via the powder bed fusion process. These patents provide estimation algorithms, methods, and systems that monitor temperature fields during the build process. One of his notable inventions involves applying closed-loop state estimation to track temperature fields, utilizing a simplified linear time-invariant (LTI) model of thermal physics. This model ensures stability, controllability, and observability, which are essential for effective temperature management. Additionally, he has developed adaptive finite element method (FEM) meshing techniques to estimate internal temperature distributions, allowing for precise control of the PBF process as the laser moves across the material.

Career Highlights

Throughout his career, Hoelzle has worked with esteemed organizations such as the Ohio State Innovation Foundation and the University of Notre Dame. His experience in these institutions has allowed him to collaborate on cutting-edge research and development projects, further enhancing his expertise in manufacturing technologies.

Collaborations

Hoelzle has collaborated with notable colleagues, including Nathaniel Joseph Wood and Amy Rowat. These partnerships have contributed to the advancement of innovative solutions in the field of powder bed fusion.

Conclusion

David John Hoelzle stands out as a key figure in the realm of manufacturing technology, particularly in the development of methods for controlling internal temperatures during the powder bed fusion process. His contributions have paved the way for improved manufacturing practices and enhanced product quality.