Acoustic structural materials and structures
The acoustic structural material integrates sound-absorbing and structural functions using fiber-reinforced plastic plates with a reflective layer, addressing weight and performance issues in existing acoustic materials, enabling lighter and more effective sound insulation.
JP2026143675APending Publication Date: 2026-09-08KAWASAKI JUKOGYO KK +1
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Patent Information
- Application Number
- JP2026096849
- Authority / Receiving Office
- JP · JP
- Patent Type
- Applications
- Current Assignee / Owner
- Filing Date
- 2026-06-10
- Publication Date
- 2026-09-08
AI Technical Summary
Technical Problem
Existing acoustic materials used as structural components increase weight and reduce sound absorption performance when combined with metal structural materials.
Method used
An acoustic structural material comprising a surface portion with a sound-absorbing layer and a back portion made of two fiber-reinforced plastic plates with a reflective layer sandwiched between them, providing both sound absorption and structural support.
Benefits of technology
Achieves weight reduction and maintains or enhances structural strength and sound insulation properties, allowing for lighter structures with improved sound attenuation.
✦ Generated by Eureka AI based on patent content.
Abstract
The present invention provides an acoustic material that functions as a structural material while achieving lightweight construction, and a structure equipped therewith. [Solution] The underwater acoustic structural material 1 has a sound-absorbing layer A that absorbs sound waves, and comprises a surface portion 2 that absorbs sound waves in water, and a back portion 4 joined to the back of the surface portion 2. The back portion 4 has two plate-shaped members 41 and 42 made of fiber-reinforced plastic, and a reflective layer 43 made of a bubble-dispersed viscoelastic material or a porous structure viscoelastic material sandwiched between the two plate-shaped members 41 and 42. The characteristic acoustic impedance value of the surface portion 2 is 0.5 to 0.9 times the characteristic acoustic impedance value of water, and the characteristic acoustic impedance value of the reflective layer 43 is 0.2 to 0.4 times the characteristic acoustic impedance value of water.
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