Fundamentals of sound absorption and sound insulation materials used in automobiles by fibers, urethane foams, laminated materials, and acoustic metamaterials, and methods for predicting their performance.

Soundproofing materials made of porous materials are sometimes used as a single type of material, but are often laminated in several layers with film or rubber.
In recent years, practical examples of acoustic metamaterials have also been increasing. The mechanisms of sound absorption and sound insulation of these materials will be explained, and the latest prediction techniques using CAE and their application to automobiles will be discussed.
At the university, research is being conducted on sound absorption and sound insulation analysis of laminated soundproofing materials, sound absorption and sound insulation analysis of acoustic metamaterials, finite element analysis of automotive panels laminated with damping materials and sound absorption of automotive panels laminated with soundproofing materials and sound absorbing materials in vehicle interior spaces.

For motors used in xEVs, basic technology, performance, cooling, downsizing, and speed reduction will be prospective. The goal is to provide one guideline for engineers involved in research and development related to electric vehicles.
The lecture will cover the design of polymer nanocomposite insulating materials (nanofiller-dispersed polymer insulating materials), their insulating properties, and the factors that affect them.
In the area of lithium-ion battery binder technology, the main cathode binder used in the current coating process is discussed, including the reasons for using such materials. Dry process is also explained from the binder’s angle; PFAS issues are unavoidable.

As a basis for energy storage with flywheels, flywheels have recently been used to stabilize power grids, prevent widespread blackouts, and smooth out renewable energy.
This presentation will introduce the frontiers of research on flywheels, including the fundamentals, applications, and even the latest trends of this large inertial disk flywheel,

The lecture will also look at the principles, features, and trends of flywheels from an overview and comparison of various energy storage devices, and will look at examples of energy storage device designs in terms of moment of inertia design and design limitations.
Also, examples of the development of flywheel-based power outage and instantaneous power loss protection devices and the development of instantaneous startup and prolonged power outage protection by combining flywheels and gas engines.
There are even examples of flywheel-based microgrid stabilization and charge/discharge device development and alternative storage battery design for mega solar pulsation compensation.