Norman Dana Nelson

Title: Innovations by Norman Dana Nelson

Introduction

Norman Dana Nelson is a notable inventor based in Rowley, MA (US). He has made significant contributions to the field of additive manufacturing, particularly in the development of methods and apparatuses that enhance material properties and processing efficiency. With a total of 2 patents, his work is recognized for addressing critical challenges in manufacturing processes.

Latest Patents

One of his latest patents is titled "Electron beam additive manufacturing." This invention presents a method and apparatus specifically designed for additively manufacturing materials that are prone to hot cracking. The process involves a leading energy beam that liquefies a raw material to create a melt pool, along with a trailing energy beam aimed at enhancing agitation and redistribution of the liquid in the melt pool. This innovative approach helps prevent hot cracking, reduce porosity, and improve the overall characteristics of the solidified part. Additionally, it allows for adjustments in processing parameters, such as vacuum levels and interpass temperature control.

Another significant patent by Nelson is the "Composition and method for fusion processing aluminum alloy." This invention provides an aluminum alloy precursor composition and a method for fusion processing that minimizes hot cracking and enhances mechanical properties. The fusion process utilizes a leading energy beam to liquefy the precursor material, similar to his previous patent, and includes a trailing energy beam to improve the quality of the final article. This method ensures that the resulting product meets the compositional specifications for aluminum 6061 alloy while minimizing defects.

Career Highlights

Norman Dana Nelson is currently associated with Raytheon Company, where he applies his expertise in innovative manufacturing techniques. His work has contributed to advancements in the field, particularly in the areas of material science and engineering.

Collaborations

Some of his notable coworkers include Mark J Pistorino and Ralph P Mason, who have collaborated with him on various projects within the company.

Conclusion

Norman Dana Nelson's contributions to additive manufacturing and aluminum alloy processing highlight his innovative spirit and dedication to improving manufacturing techniques. His patents reflect a commitment to addressing industry challenges and enhancing material properties for better performance.