Core materials???

Talk Composites - The Forum for Advanced Composites

Back

Core materials???

Author	Message
speed_demon	speed_demon posted 10 Years Ago HOT Topic Details
Group: Forum Members Posts: 23, Visits: 163	Hi everyone, I have been researching core materials and found myself on the DIAB website and was surprised as to how many different kinds they offer. I am waiting to hear back from them, but wanted to ask when you guys use one material over another, preferences, thoughts on the different materials. I hear balsa wood still has one of the highest strength/weight with great compression strength but doesn't conform to complex shape, is more moisture absorbent and usually thicker than foams available. FWIW, it was used in production c6 floorboards. I see the soric SF is unique in that it's channels that make a resin/honeycomb structure when used. How does it compare to the Divinyl foams? Diab had 12 different types of Divinyl foam( PES, PET, IPN), Sintactic foams and I've seen multiple weight/density pour urethane foams. Honeycombs are on the expensive side, usually made of Nomex or aluminum. With how strong laminates can be made with soric mat and foams, when would you choose honeycomb? Is it when Higher impact strength is needed or is it when weight is the number 1 concern? I would think resin filling the honeycomb would be a concern, unless using pre-preg? Any thoughts? Edited 10 Years Ago by speed_demon
	Reply Like 3
Replies
Hanaldo	Hanaldo posted 10 Years Ago HOT Post Details
Group: Forum Members Posts: 2.5K, Visits: 28K	There's so many types of foam available, again I think it depends on the application. I'm not personally a huge fan of Soric, it's heavy. I prefer Corecork over Soric, but Soric does have its benefits as well. I also like 3D PET core, but only for low stress applications. PET foam under stress will shear from itself, so for high stress applications I use H80 Divinycell, drilled and scored myself for infusion. Those are the cores I use the most.
	Reply Like 3
speed_demon	speed_demon posted 10 Years Ago HOT Post Details
Group: Forum Members Posts: 23, Visits: 163	Hanaldo, thanks for your insight and the "corecork" material recommendation. I haven't seen that material listed on any supply sites before. Went to the corematerials site( not too far from me), had a nice material/strength comparison chart(attached). I have been checking out the grurit site. I also found some formula's /reading material... "food for thought" for us newbie's/ info. junkies- http://www.hexcel.com/Resources/DataSheets/Brochure-Data-Sheets/Honeycomb_Sandwich_Design_Technology.pdf Attachments CorematerialComparison.pdf (597 views, 118.00 KB)
	Reply Like 2