Would a stacked honeycomb sandwich panel work?


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BigChief
BigChief
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Let's say I was going to make a sandwich panel:

---3 layers of carbon fiber---
---1-inch nomex honeycomb---
---3 layers of carbon fiber---

What if I instead made:

---2 layers of carbon fiber---
---half-inch nomex honeycomb---
---2 layers of carbon fiber---
---half-inch nomex honeycomb---
---2 layers of carbon fiber---

Both sandwich panels total the same amount of material and weight... would the second option be as stiff/strong?

Are there any best practices on how many layers of carbon fiber to honeycomb would give the best strength-to-weight ratio? It would be nice to have a general idea without resorting to FEA tools.
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Fasta
Fasta
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Generally this is not any stronger. 

Usually you can consider the middle of the sandwich as a neutral area where fibre layers would not be taking any loads.

The outer skins take all the loads of compression and tension while the core mostly just holds the skins apart.

In fact since your second proposal has just two layers on the outer skins then it would not be as strong as the first proposal that has three layers.




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