Laminate Sample #14: Prepreg Carbon / Epoxy on Aluminum Honeycomb Core
8.4 هزار بار بازدید -
5 سال پیش
-
This sample shows how to
This sample shows how to make prepreg carbon panel with aluminum honeycomb core.
It is similar to #2 - pre-preg skins with honeycomb core. This time the core is aluminum honeycomb instead of Nomex. Aluminum core has slightly better mechanical properties and it fails in a more crushy/bendy - less crunchy way than Nomex - to use the technical terminology!
This panel is all unidirectional carbon - so on each face, all the fiber is pointing in one direction. This is stronger than a woven but much less damage-tolerant. You can see me pull a strip of uni off just by pulling the peel ply. Usually it is worth using a strip of woven material anywhere edges are cut or holes are drilled - unless you plan to laminate a secondary bonding feature or a "closeout" laminate to cap the edge of cored areas.
I didn't do anything to vent the core cells here - it is a small panel and the skins are relatively light. For heavier or thicker skins, it is a good idea to perforate the top skin so air and moisture (more of an issue with Nomex or other resin/paper honeycombs that absorb water) can escape the cells without pushing the skins off the core.
Find more about this sample at:
https://explorecomposites.com/materia...
It is similar to #2 - pre-preg skins with honeycomb core. This time the core is aluminum honeycomb instead of Nomex. Aluminum core has slightly better mechanical properties and it fails in a more crushy/bendy - less crunchy way than Nomex - to use the technical terminology!
This panel is all unidirectional carbon - so on each face, all the fiber is pointing in one direction. This is stronger than a woven but much less damage-tolerant. You can see me pull a strip of uni off just by pulling the peel ply. Usually it is worth using a strip of woven material anywhere edges are cut or holes are drilled - unless you plan to laminate a secondary bonding feature or a "closeout" laminate to cap the edge of cored areas.
I didn't do anything to vent the core cells here - it is a small panel and the skins are relatively light. For heavier or thicker skins, it is a good idea to perforate the top skin so air and moisture (more of an issue with Nomex or other resin/paper honeycombs that absorb water) can escape the cells without pushing the skins off the core.
Find more about this sample at:
https://explorecomposites.com/materia...
5 سال پیش
در تاریخ 1398/12/14 منتشر شده
است.
8,414
بـار بازدید شده