David Cafarelli

Title: David Cafarelli: Innovator in Turbine Technology

Introduction

David Cafarelli is a notable inventor based in Zurich, Switzerland. He has made significant contributions to the field of turbine technology, particularly in the area of turbine blade tip rail formation and repair. His innovative methods utilize advanced laser welding techniques to enhance the performance and longevity of turbine components.

Latest Patents

Cafarelli holds a patent for a method titled "Turbine blade tip rail formation and repair using laser welding." This patent describes methods for forming or repairing a tip rail of a turbine. One of the key methods involves laser irradiating a wire material in an inert gas near a tip plate. The process includes several phases: a warm-up phase where the laser power gradually increases, a melt and bond phase where the wire material is melted, and a stress-releasing phase to ensure durability. Additionally, exterior surface coatings and thermal barrier coatings may be applied to protect the tip rail.

Career Highlights

David Cafarelli is associated with General Electric Company, a leader in technology and innovation. His work at General Electric has allowed him to develop and refine his patented methods, contributing to advancements in turbine technology. His expertise in laser welding has positioned him as a key figure in the industry.

Collaborations

Cafarelli has collaborated with several esteemed colleagues, including Klaus-Dieter Hermann, Maximilian Wassmer, and Hans Bissig. These collaborations have fostered an environment of innovation and have led to further advancements in turbine technology.

Conclusion

David Cafarelli's contributions to turbine technology through his innovative patent demonstrate his commitment to enhancing engineering practices. His work not only improves turbine performance but also sets a standard for future innovations in the field.