|
Group: Forum Members
Posts: 592,
Visits: 1.9K
|
I have actually conducted several tests of bonding in and laminating in metal fasteners (made from Grade 5 titanium) for a small shipyard that builds CF pre-fab parts for medium sized vessels.
I can tell you that there is a very small advantage in strength of the fasteners binding to the actual part, from laminating it inside (vac-bag) or infusing it into the CF laminate. It is simply only cost effective in terms of the work you need to put into it, unless you need to produce a fair amount of copies of the same part.
Bonding the fasteners in with patches of cf fabric laminated on top retains 90 -95 % of the strength of an "infused in" fastener.
Bonding in a simple standard nut will not be very strong, its much better to have some threaded inserts made, that have a larger surface area to bond to and to spread the load over a larger area of the cf laminate.
I can give an example: an M5 threaded insert machined as a flat disc 18 mm in diameter has more than 600% higher strength, compared to a standard M5 nut laminated into the CF sheet.
"Sapere Aude"... Dare to KNOW!
The written word is the only truly efficient vehicle for transmitting a complex concept from mind to mind...
103% of all people do not understand statistics...
Do not adjust our mind, theres a fault in reality :-)
|