Zhengyang Dong

Title: Innovations by Zhengyang Dong

Introduction

Zhengyang Dong is a notable inventor based in Province, China. He has made significant contributions to the field of injection molding through his innovative patents. With a total of two patents to his name, his work focuses on optimizing process parameters and measuring polymer melt temperature.

Latest Patents

One of Zhengyang Dong's latest patents is a model-free optimization method of process parameters of injection molding. This invention addresses the challenges of frequent testing and adaptive adjustments required in existing optimization methods. By eliminating the need to build a surrogate model between product quality indices and process parameters, this method allows for convergence towards optimal solutions through an online iteration method. It calculates the gradient direction of a current point using an iterative gradient estimation method and employs an adaptive moment estimation algorithm to allocate adaptive steps for each parameter. This innovation significantly reduces the cost and time associated with process parameter optimization, enhancing efficiency in injection molding.

Another significant patent is the method for on-line measurement of polymer melt temperature and the apparatus associated with it. This method involves the on-line measurement of ultrasonic sound velocity and melt pressure during the injection molding process. By applying a specific formula, it enables the determination of melt temperature in real-time. The apparatus facilitates on-line and in-situ characterization of melt density, allowing for quantitative measurement of melt quality. Compared to traditional infrared measurement methods, this approach is more cost-effective and holds great importance for theoretical research in crystallization processes and shear heating.

Career Highlights

Zhengyang Dong is affiliated with Zhejiang University, where he continues to advance his research and innovations in the field of polymer processing. His work has garnered attention for its practical applications and contributions to the industry.

Collaborations

Zhengyang has collaborated with notable colleagues, including Peng Zhao and Kaipeng Ji, to further enhance his research and development efforts.

Conclusion

Zhengyang Dong's innovative patents in injection molding optimization and polymer melt temperature measurement demonstrate his significant impact on the field. His contributions not only improve efficiency but also reduce costs, making a lasting impression on the industry.