System for improving acoustic performance of a panel using a metamaterial
A metamaterial attached to automotive glass panels addresses structural-born noise by minimizing wave reflections, improving acoustic performance through wave absorption and attenuation.
WO2026128405A1 Publication Date: 2026-06-18TOYOTA MOTOR ENG & MFG NORTH AMERICA INC
Patent Information
- Authority / Receiving Office
- WO · WO
- Patent Type
- Applications
- Current Assignee / Owner
- TOYOTA MOTOR ENG & MFG NORTH AMERICA INC
- Filing Date
- 2025-12-09
- Publication Date
- 2026-06-18
AI Technical Summary
⚠Technical Problem
Structural-born noise and vibrations in automotive glass panels affect vehicle comfort and quietness, and existing solutions like increasing mass or using laminated glass are inadequate.
⚗Method used
A metamaterial is attached to the exterior edge of the panel to minimize the reflection coefficient of flexural waves, utilizing topology optimization to absorb incident vibrational waves and attenuate reflections, thereby improving acoustic performance.
🎯Benefits of technology
The metamaterial effectively absorbs and attenuates broadband flexural waves, significantly enhancing the acoustic performance of the panel, particularly in the audible frequency range.
✦ Generated by Eureka AI based on patent content.
Smart Images
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Abstract
Disclosed are systems that utilize metamaterials to improve the acoustic performance of a panel, such as a glass panel used in automotive applications. In one example, the system may include a panel having an exterior edge and a metamaterial attached adjacent to the exterior edge of the panel. The metamaterial is configured to minimize the reflection coefficient of flexural waves acting upon the panel.
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