Joseph John Pepe

Title: Innovations by Joseph John Pepe

Introduction

Joseph John Pepe is a notable inventor based in Ballston Lake, NY (US). He has made significant contributions to the field of engineering, particularly in the repair of steam turbine rotors. With a total of three patents to his name, his work showcases innovative methods that enhance the efficiency and longevity of turbine components.

Latest Patents

One of Joseph's latest patents is a method of repairing a steam turbine rotor. This method involves removing a damaged rim and its associated dovetail region to create a surface at the perimeter of the rim portion. A weld repair region is then formed on this surface, which is machined to reconstruct both the rim portion and the dovetail region using the weld repair region. This method is specifically designed for repairing steel alloy rotors, such as NiCrMoV, NiMoV, and CrMoV alloys. The weld repair is created with a nickel-base superalloy that possesses mechanical and thermal properties compatible with the steel alloy over a broad temperature range.

Another patent by Joseph focuses on a turbine rotor that comprises a radially-inward portion made of steel alloy and a radially-outward rim portion. This rim portion is formed by a weldment that includes a nickel-base superalloy region, which joins the rim portion to the inward portion of the turbine rotor. The nickel-base superalloy is engineered to have a room temperature ultimate tensile strength of at least about 690 MPa, ensuring durability and reliability in high-stress environments.

Career Highlights

Joseph John Pepe is associated with General Electric Company, where he applies his expertise in turbine technology. His innovative approaches have contributed to advancements in the field, particularly in enhancing the performance and repairability of turbine systems.

Collaborations

Throughout his career, Joseph has collaborated with notable colleagues, including Karl Rudolph Anderson, III and Gerald Richard Crawmer. These collaborations have fostered a creative environment that encourages the development of cutting-edge solutions in turbine technology.

Conclusion

Joseph John Pepe's contributions to the field of steam turbine repair exemplify the spirit of innovation. His patents reflect a deep understanding of materials and engineering principles, making significant strides in the industry. His work continues to influence the future of turbine technology and repair methods.