Tomohisa Hemmi

Title: Innovations by Tomohisa Hemmi in Crack Detection Technology

Introduction

Tomohisa Hemmi is a notable inventor based in Tokyo, Japan. He has made significant contributions to the field of crack detection technology, particularly in rolling rolls used in various industrial applications. His innovative approach has led to the development of a unique device that enhances the safety and efficiency of rolling processes.

Latest Patents

Hemmi holds a patent for an "Online crack detection device for rolling roll, rolling roll, and online crack detection method for rolling roll." This device is designed to perform online identification of cracks that may occur and propagate on the surface of the barrel portion of a rolling roll. The technology allows for the detection of cracks without substantial modifications to existing rolling devices and eliminates the need for continuous placement of multiple sensors. The device incorporates an AE sensor that detects elastic waves generated on the surface of the barrel portion, along with a calculation unit that analyzes these waves to identify potential cracks.

Career Highlights

Tomohisa Hemmi is associated with Hitachi Metals, Ltd., where he has been instrumental in advancing technologies related to rolling processes. His work has not only contributed to the safety of industrial operations but has also positioned his company as a leader in innovative manufacturing solutions.

Collaborations

Hemmi has collaborated with notable colleagues, including Keishi Sato and Masahiko Ohshima, to further enhance the development of crack detection technologies. Their combined expertise has played a crucial role in refining the applications of Hemmi's inventions.

Conclusion

Tomohisa Hemmi's contributions to crack detection technology exemplify the importance of innovation in industrial processes. His patent for an online crack detection device represents a significant advancement in ensuring the integrity and safety of rolling rolls.