Talk Composites - The Forum for Advanced Composites

Sandwich panel distorsion

http://www.talkcomposites.com/Topic37742.aspx

By Rosta Spicl - 8/27/2020 6:48:30 AM

Coleagues
Just another issue I´m unsuccesfull.
Trying to laminate a sandwich panel  with nonconstant thickness in 2 steps process. 1st step there is a cca 0.7mm thick panel based on UD carbon prepregs - 1x54+2x100+2x200gsm UD. On 2nd step apply the Rohacell core and inner skin based on twill 200gsm carbon prepreg, see the attchd. sketch. The curing process starts on vac-1bar@100°C for 4.5hours, cooling slow down to 30°C for 6hours. After demoulding the panel is going to distorsion about 10mm.
Any tips for process changes?
Thanks a lot, Rosta

By Rosta Spicl - 9/7/2020 7:39:13 AM

Chris, that's a standart UD 54gsm carbon prepreg, bought in CN, contact here: cangzhouzhongli123@163.com