How can we combine metal and fiber together?

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Discussion Overview

The discussion revolves around methods for combining metal and carbon fiber composites, particularly in the context of engineering projects such as shipbuilding. Participants explore various techniques, materials, and software for testing the strength of the combined materials, especially under underwater conditions.

Discussion Character

  • Exploratory
  • Technical explanation
  • Debate/contested
  • Homework-related

Main Points Raised

  • One participant inquires about the best method to combine metal and fiber, emphasizing that gluing may not be sufficient.
  • Another participant suggests that gluing could work with appropriate epoxy, depending on the application.
  • A participant mentions they are working on a bachelor engineering project and seeks the strongest method for combining metal and fiber in underwater conditions.
  • Clarification is sought regarding whether "fiber" refers to carbon fiber composites or another type of fabric.
  • Some participants propose using epoxy on overlapping faces of metal and carbon fiber sheets for better results.
  • Concerns are raised about the structural integrity of carbon fiber when drilling holes for bolts or rivets in metal.
  • Questions are posed regarding the intended application of the combined materials, such as whether it is for a hull or keel, and the implications of combining materials with different stiffnesses.
  • Participants share links to articles and threads that may provide additional insights on the topic.

Areas of Agreement / Disagreement

Participants express differing views on the feasibility of gluing metal and carbon fiber, the best materials to use, and the implications of combining these materials in engineering applications. The discussion remains unresolved with multiple competing perspectives on the best approach.

Contextual Notes

Participants have not reached a consensus on the optimal method for combining metal and carbon fiber composites, and there are unresolved questions regarding the effects of different loading mechanisms and structural integrity.

Thenymphadora
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Hello,

I would like to ask something here. If I would like to combine metal and fiber, what method is the the best because we can't simply glue them together. what material can hold them together. And can we test the strength of them after they stick together using ANSYS software? It would be great if Ansys can generate tensile graph as well. If ANSYS cannot, what software should i use?

(I'm sorry if my english is not good)
 
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What do you mean by combine? If you want to throw a layer of some material on a sheet of metal, you can absolutely glue it on. Elmer's won't work, obviously, but an appropriate selection of epoxy or similar material would in many cases.
 
Actually I am doing an engineering project for my bachelor. I am looking for a method to use both metal and fiber together in underwater condition. We can't simply glue them together if we are building a ship from metal and fiber. So I am looking for the strongest way to combine them together.
 
Thenymphadora said:
Hello,

I would like to ask something here. If I would like to combine metal and fiber, what method is the the best because we can't simply glue them together. what material can hold them together. And can we test the strength of them after they stick together using ANSYS software? It would be great if Ansys can generate tensile graph as well. If ANSYS cannot, what software should i use?

(I'm sorry if my english is not good)

Thenymphadora said:
Actually I am doing an engineering project for my bachelor. I am looking for a method to use both metal and fiber together in underwater condition. We can't simply glue them together if we are building a ship from metal and fiber. So I am looking for the strongest way to combine them together.

By "fiber", do you mean carbon fiber composites? Or do you mean a fabric of some sort?
 
yes..its carbon fiber composites.
 
Are you talking about a sheet of metal (steel or aluminium?) and a sheet of CFC? In that case some form of epoxy should work.

Best results would obviously be achieved if you use the epoxy on overlapping faces of the sheets, i.e. not end to end. This wille depend on the expected loading mechanism on the joint
 
As far as putting CF on steel, really some form of epoxy (call 3M and see if they have anything to fit your application) is, as far as I know, your only real option. Drilling holes for bolts and rivets may (or will likely) decrease the structural integrity of the CF.

Are you are talking about some sort of steel subframe, rather than sheet-on-sheet?

My question: what do you hope to gain from the addition of CF on steel (from what I understand, CF and Aluminum don't mix well over the long haul, though there are ways around that I think)? They're both strong, but they have different stiffnesses, and that will likely become a major problem when the components are loaded and unloaded.

Is this for a hull, or a keel, or what?

Adding steel to CF kind of defeats the purpose of the CF in the first place, no?
 
This article might be of some help. Worth a look

http://www.westsystem.com/ss/testing-large-bonded-in-fasteners/
 
Check out this thread as well: Here
 
  • #10
Thanks Travis King.. I am starting to find my answer in the article you linked me.. Thanks for everybody help..
 

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