Tsugumi Yamazaki

Title: **The Innovative Contributions of Tsugumi Yamazaki**

Introduction

Tsugumi Yamazaki, an esteemed inventor based in Shizuoka, Japan, has made significant strides in the field of materials engineering, specifically focused on steel pipes for fuel injection systems. With a total of two patents to her name, Yamazaki's inventions showcase her expertise and understanding of the complexities involved in enhancing the performance of fuel delivery systems.

Latest Patents

Yamazaki's latest patents include technologies related to steel pipes designed for fuel injection purposes. Her first patent outlines a steel pipe with a specific chemical composition, featuring mass percentages of various elements such as carbon (C), silicon (Si), manganese (Mn), aluminum (Al), nitrogen (N), titanium (Ti), niobium (Nb), chromium (Cr), molybdenum (Mo), copper (Cu), nickel (Ni), vanadium (V), and boron (B). The balance of the composition is comprised of iron (Fe) and impurities, which are meticulously controlled to ensure optimal performance. This pipe exhibits a tempered martensitic or tempered bainite micro-structure with a prior-austenite grain size number of 10.0 or more, ensuring a tensile strength of 800 MPa or higher under critical conditions.

Her second patent further develops the notion of a steel pipe specifically for fuel injection, achieving a tensile strength ranging from 500 to 900 MPa and a yield ratio between 0.50 and 0.85. A notable feature outlined in this patent is the measurement of circumferential-direction residual stress on the inner surface of the pipe, which is stipulated to be -20 MPa or lower after the pipe is split in the axial direction.

Career Highlights

Throughout her career, Tsugumi Yamazaki has held positions in prominent engineering firms such as Usui Co., Ltd. and Nippon Steel Corporation. Her roles in these companies have allowed her to contribute to important advancements in materials science, playing a pivotal role in research and development projects aimed at improving steel pipe technologies. Yamazaki's extensive background, combined with her innovative mindset, has solidified her reputation in the industry.

Collaborations

Yamazaki has collaborated with notable colleagues in her field, including Tatsuya Masuda and Taizo Makino. These partnerships have fostered an environment of shared knowledge and innovation, facilitating the development of groundbreaking technologies in fuel injection pipe engineering.

Conclusion

Tsugumi Yamazaki's contributions to the field of material engineering underscore the importance of innovation within the energy sector. Her patents serve as a testament to her expertise and creativity, paving the way for more efficient fuel injection systems. As she continues to push the boundaries of engineering, her work not only enhances current technologies but also inspires future generations of inventors.