Browse Prior Art Database

Multifunctional Composite Panel

IP.com Disclosure Number: IPCOM000087744D
Original Publication Date: 1977-Mar-01
Included in the Prior Art Database: 2005-Mar-03
Document File: 2 page(s) / 44K

Publishing Venue

IBM

Related People

Lockhart, MA: AUTHOR [+2]

Abstract

A low-cost structural panel that will absorb sound and provide EMC (electromagnetic compatibility) protection is provided.

This text was extracted from a PDF file.
At least one non-text object (such as an image or picture) has been suppressed.
This is the abbreviated version, containing approximately 100% of the total text.

Page 1 of 2

Multifunctional Composite Panel

A low-cost structural panel that will absorb sound and provide EMC (electromagnetic compatibility) protection is provided.

The structural panel (Fig. 1) has the outside surface formed of sheet metal
10. The panel edges 12 and center ribs (not shown) are filled with rigid plastic foam 14 to impart panel stiffness and structural integrity. The remaining center core is filled with soft, flexible sound-absorbing foam 16. The sound-absorbing foam is covered with perforate metal sheet 18 to protect the foam and allow sound to enter. The rigid foam 14 can be made of plastic, ceramic, metal or glass. The outer sheet 10 can be made of steel, aluminum or any plastic, thermoplastic or thermoset.

This type of construction can be used to fabricate covers, panels, table tops and complete enclosures (including sides, tops and bottoms of cabinets and tables.) The panel thickness can be from 1/2'' to 1/4''. The sound-absorbing media 16 can be any flexible or rigid open cell plastic, glass or ceramic foam. The foam is used for a combination of strength and noise absorption, allowing for fabrication of a low-cost panel. The thermal conductivity properties are low; therefore, it will contain a fire or heat, and also exclude heat for low-temperature operations.

1

Page 2 of 2

2

[This page contains 3 pictures or other non-text objects]