Hi all,
here some detailed pics of an F1 rear crash structure of late 90’s….old but always interesting
http://www.f1technical.net/forum/viewtopic.phpf=6&t=11546&p=295353#p295353
404 error 
i did a search for it on that forum and found it. hopefully this link works:
http://www.f1technical.net/forum/viewtopic.php?f=6&t=11546&hilit=crash+structure
No, he say:
Sorry, but the page or the file that you’re looking for is not here. 
Sorry again…but I have problems with the web address…let me try in another way
It’s not a " perfect" informatic way , but…
Here’s another link in case the others don’t work. www.goo.gl/yaG1m
Those were some good pics to look at thanks for sharing Wings.
ps. Canyon’s link is the only one that worked for me.
that’s strange, my link works fine for me. either way, thanks for sharing that.
It works for me now! I’ve been having problems with the computer today. I couldn’t get skype to work right at all.
Interesting! I had a student last year who developed some “crash cones” but they where set up differently. Without any core or honeycombstructures, but they where stronger as expected(haha, for a change…)
I ve made a few crash structures and they have not been quite the same lay up as this. Essentially they were a number of carbon plys and some kevlar plys then honeycomb with hard points in either aluminium or tufnol dependent on what the hard points are used for. Then more plys over the top of the honeycomb.
Usually crash structures have a fairly high kevlar content but it is dependent on if the structure is load bearing or not.
All the structures that i have made were all done in a female mould (giving a a class finish on the outside surfaces).
They are usually layed up in three stages.
The outter skin. Cure.
The core material. Cure
The inner skin then cure.
Hope this makes things a little clearer for people.
Could not be found :(.