Masaaki Ashizawa

Title: Masaaki Ashizawa: Innovator in Vibration Damping Materials

Introduction

Masaaki Ashizawa is a notable inventor based in Yokohama, Japan, recognized for his contributions to the field of vibration damping materials. With a total of seven patents to his name, Ashizawa has made significant advancements that enhance the performance and reliability of various materials used in engineering applications.

Latest Patents

Among his latest innovations is a vibration damping material designed to exhibit excellent vibration damping properties across a wide temperature range. This magnetic composite type damping material is constructed by bonding an adhesive elastic sheet containing magnetic powder to a constraining plate, such as a metal plate, using an adhesive. The adhesive elastic sheet is made from a composite material that includes rubber elastomer, adhesive resin, plasticizer, and magnetic powder. This unique construction allows the damping material to be attracted by magnetic force against a vibration source while also providing superficial adhesiveness. The synergistic effect of the magnetic force and adhering force results in outstanding vibration damping properties over a broad temperature range.

Another significant patent is for a rubber-coated gasket material, which features a rubber layer formed on one or both sides of a metal sheet. This rubber layer incorporates a nitrile rubber containing a carboxyl group, with the proportion of a carboxylic monomer calculated in terms of monomer content in the rubber component ranging from 2-15 wt.%. The rubber layer is applied in a thickness of 10-300 micrometers per side and is bonded to the metal sheet with a primer layer based on phenolic resin interposed between them.

Career Highlights

Masaaki Ashizawa has worked with prominent organizations such as Nichias Corporation and the Railway Technical Research Institute. His experience in these companies has allowed him to develop and refine his innovative ideas, contributing to advancements in material science.

Collaborations

Throughout his career, Ashizawa has collaborated with notable colleagues, including Kazuo Nishimoto and Tsutomu Yamamoto. These partnerships have fostered a creative environment that has led to the development of groundbreaking technologies.

Conclusion

Masaaki Ashizawa's work in vibration damping materials showcases his innovative spirit and dedication to improving engineering solutions. His patents reflect a deep understanding of material properties and their applications, making him a significant figure in the field of invention.