Yoshinobu Murayama

Title: Innovations by Yoshinobu Murayama

Introduction

Yoshinobu Murayama is a notable inventor based in Tokyo, Japan. He has made significant contributions to the field of material hardness measurement, holding two patents that showcase his innovative approach to technology.

Latest Patents

Murayama's latest patents include a "Material Hardness Distribution Display System" and a "Material Hardness Distribution Display Method." The material hardness distribution display system features a probe unit with multiple probe elements arranged in a two-dimensional layout. Each probe element is equipped with an oscillator that introduces oscillation into biological tissue and an oscillation detection sensor that detects the reflected wave. The system utilizes a switch circuit to select probe elements, which are connected to a hardness calculation unit and a measurement depth calculation unit. The hardness calculation unit performs frequency component analysis to determine the hardness of biological tissue based on the analysis results. The measurement depth calculation unit calculates the measurement depth within the biological tissue based on the temporal positions of the incident and reflected wave signals.

Another patent focuses on an "Operating Frequency Selection Method for Hardness Measurement System." This method simplifies the selection of an operating frequency using a phase shift circuit. The hardness sensor is connected to an operating frequency selection apparatus, which acquires amplitude versus frequency characteristics in a free end state. The frequency and phase of the peaks are measured and recorded. The same procedure is repeated for a second test piece that is harder than the first, allowing for the selection of a peak suitable for hardness measurement.

Career Highlights

Yoshinobu Murayama is affiliated with Nihon University, where he continues to advance his research and development in material hardness measurement technologies. His work has contributed to the understanding and application of hardness measurement in various fields.

Collaborations

Murayama has collaborated with notable colleagues, including Sadao Omata and Katsuhito Honda. Their combined expertise has furthered the development of innovative solutions in their respective fields.

Conclusion

Yoshinobu Murayama's contributions to material hardness measurement through his patents reflect his dedication to innovation and technology. His work at Nihon University and collaborations with esteemed colleagues highlight the importance of teamwork in advancing scientific knowledge.