×
INTELLIGENT WORK FORUMS
FOR ENGINEERING PROFESSIONALS

Log In

Come Join Us!

Are you an
Engineering professional?
Join Eng-Tips Forums!
  • Talk With Other Members
  • Be Notified Of Responses
    To Your Posts
  • Keyword Search
  • One-Click Access To Your
    Favorite Forums
  • Automated Signatures
    On Your Posts
  • Best Of All, It's Free!
  • Students Click Here

*Eng-Tips's functionality depends on members receiving e-mail. By joining you are opting in to receive e-mail.

Posting Guidelines

Promoting, selling, recruiting, coursework and thesis posting is forbidden.

Students Click Here

Jobs

Composite Panel Definition

Composite Panel Definition

Composite Panel Definition

(OP)
Does the definition of a metallic composite panel allow for a top skin, bottom skin and nothing but air between? Is some material inside necessary for it to be called a composite panel? The edges of these panels are finished with channels all around.

RE: Composite Panel Definition

There should be some intermediate material and at least one 'skin' that are interconnected so that the properties of the different materials act compositely. The intermediate material can be a channel, or whatever but it has to be connected so that the assembly acts in a composite manner. Strength is predicated on all components working 'together'.

If it's a legal issue, you should talk to a lawyer.

Dik

RE: Composite Panel Definition

IFRs:
Channels at all four edges and two thin skins t&b might more accurately be called a stressed skin panel. But, they almost always need some void fill material or structure of some sort to make the two skins act better together and to prevent the skin which is in compression from buckling. The void in fill system might be bonded aluminum honeycomb, or a bonded corrugated cardboard honeycomb. Goggle “Hexcel,” for example, or cut a good hollow core door in your house in half. All material in the panel can be the same material, or the channels and void in fill might be a slightly lower strength, or different materials than the skins, which are invariable more highly stressed. Similarly, a build-up WF or plate girder might be made up of high strength flanges and a lesser strength web material. The members/panels made up of different strength materials are usually called hybrid members’/panels. Composite members are usually made up of different materials, and the different materials, at their interface, are intentionally designed to act in unison, as one final member. Examples of composite construction might be steel beams/girders, with shear transfer mechanisms on the top flange, and then a concrete slab is cast around and over the top flange so the two materials truly act together, and take advantage of the best attributes of each material. That is, the steel is particularly good in tension and is the lower part (tension area) of the simple beam, while the concrete particularly good in compression and stiff w.r.t. buckling and lateral buckling makes up the top (compression area) of the composite beam member.

Red Flag This Post

Please let us know here why this post is inappropriate. Reasons such as off-topic, duplicates, flames, illegal, vulgar, or students posting their homework.

Red Flag Submitted

Thank you for helping keep Eng-Tips Forums free from inappropriate posts.
The Eng-Tips staff will check this out and take appropriate action.

Reply To This Thread

Posting in the Eng-Tips forums is a member-only feature.

Click Here to join Eng-Tips and talk with other members!


Resources