Toshihiro Ohtani

Title: Inventor Toshihiro Ohtani: Innovations in Non-Destructive Testing

Introduction: Toshihiro Ohtani is a renowned inventor based in Kanagawa, Japan, with an impressive portfolio of six patents to his name. His work primarily focuses on innovative methods and apparatus for non-destructive testing of conductive materials, showcasing his expertise in acoustic wave technologies.

Latest Patents: Ohtani's latest patents include groundbreaking technologies such as a method and apparatus for diagnosing damages of conductive materials. This innovative system uses acoustic waves to perform damage evaluations non-destructively. The method involves placing an electromagnetic acoustic transducer (EMAT) out of contact with a structured pile of conductive materials, ensuring that a non-conductive interface is interposed between them. His approach helps transmit ultrasonic waves from one side of the piled structure and receive the reflected ultrasonic waves from the opposite side. By analyzing the ultrasonic velocity and attenuation of the received waves, Ohtani can effectively diagnose any damaged conditions present within the structure.

Another significant patent by Ohtani involves the development of an EMAT and an inspection system with electromagnetic acoustic resonance (EMAR). This invention integrates resonant techniques with a non-contact electromagnetic acoustic transducer. The system can evaluate the absolute value of ultrasonic attenuation, which is critical for assessing accumulated fatigue damage in metals. Ohtani's supervision in this area allows for predictions of a material's remaining life, particularly when damage shows significant attenuation levels of around 20-30% of their total lifespan.

Career Highlights: Ohtani's career is marked by his role at Ebara Corporation, where he has made significant contributions to the field of non-destructive testing. Over the years, he has honed his skills and dedicated his time to research and innovate in engineering applications, particularly in acoustic technologies.

Collaborations: Throughout his career, Ohtani has collaborated with numerous professionals, including notable coworkers Hirotsugu Ogi and Masahiko Hirao. Their collective expertise has greatly enhanced the development and implementation of innovative testing methods in their field.

Conclusion: Toshihiro Ohtani stands out as a significant figure in the world of innovation, particularly in non-destructive testing methodologies for conductive materials. His inventive spirit and relentless pursuit of excellence contribute to advancements in technology that ensure the safety and longevity of metal structures. Ohtani's work exemplifies the importance of innovation in engineering, making a lasting impact in his industry.