pre-preg with aluminum honeycomb

Author	Message
Amore	A Amore posted 8 Years Ago HOT Topic Details
A Group: Forum Members Posts: 11, Visits: 104	Hi I'm in FSAE Team and i'd like to make carbon fiber monocoque body last year our Team use aramid fiber honey comb This year we try to change core material (1/8 inch aramid fiber Honey comb ⇒ 1/8 inch aluminum Honey comb) last year we use adhesive film to combine carbon and aramid honey comb because we expect that film type adhesive will show even adhesion and it was corresponded our expectaion by using aluminum honeycomb is it okay use same ahesive film in sandwich pannel?? if not which adhesive is good for aluminum honeycomb
	Reply Like 6
Replies
Fasta	Fasta posted 8 Years Ago HOT Post Details
Group: Forum Members Posts: 468, Visits: 3.5K	For very light sandwich you can use PVC or acrylic foam core instead but without film glues and this could be lighter than any nomex or alloy honeycomb due to not using film glues. Fastacraft Facebook page
	Reply Like 6
Amore	A Amore posted 8 Years Ago HOT Post Details
A Group: Forum Members Posts: 11, Visits: 104	+x Fasta - 8/24/2017 6:09:29 AM For very light sandwich you can use PVC or acrylic foam core instead but without film glues and this could be lighter than any nomex or alloy honeycomb due to not using film glues. we've been use rohacell core but at hard point it peel off from skin so we only use at bulk head
	Reply Like 5
Amore	A Amore posted 8 Years Ago HOT Post Details
A Group: Forum Members Posts: 11, Visits: 104	+x Fasta - 8/24/2017 6:09:29 AM For very light sandwich you can use PVC or acrylic foam core instead but without film glues and this could be lighter than any nomex or alloy honeycomb due to not using film glues. when we cut off the monocoque body the rohacell is crushed and smashed so body compliance was serious problem
	Reply Like 6
Matt (Staff)	Matt (Staff) posted 8 Years Ago HOT Post Details
Group: Forum Members Posts: 680, Visits: 1.9K	+x Amore - 8/24/2017 7:52:11 AM +x Fasta - 8/24/2017 6:09:29 AM For very light sandwich you can use PVC or acrylic foam core instead but without film glues and this could be lighter than any nomex or alloy honeycomb due to not using film glues. when we cut off the monocoque body the rohacell is crushed and smashed so body compliance was serious problem That sounds very unusual. I can't understand why the Rohacell would be crushed and smashed. Is this after an impact or just after fabrication? Also, if you're getting delamination between the prepreg and the Rohacell this is also a problem which shouldn't happen. However, if you're now set on a course of Aluminium honeycomb then it would be worth concentrating on making sure this goes correctly and that you do not run into the same delamination problems. If you do need adhesive film then we have our XA120 which has excellent bond strength to aluminium (and aramid) cores and is available from stock. It's not listed on the website yet but our sales team can help you if you need some. Matt Statham Easy Composites / Carbon Mods - Technical Sales
	Reply Like 3
Amore	A Amore posted 8 Years Ago HOT Post Details
A Group: Forum Members Posts: 11, Visits: 104	+x Matt (Staff) - 8/24/2017 8:01:46 AM +x Amore - 8/24/2017 7:52:11 AM +x Fasta - 8/24/2017 6:09:29 AM For very light sandwich you can use PVC or acrylic foam core instead but without film glues and this could be lighter than any nomex or alloy honeycomb due to not using film glues. when we cut off the monocoque body the rohacell is crushed and smashed so body compliance was serious problem That sounds very unusual. I can't understand why the Rohacell would be crushed and smashed. Is this after an impact or just after fabrication? Also, if you're getting delamination between the prepreg and the Rohacell this is also a problem which shouldn't happen. However, if you're now set on a course of Aluminium honeycomb then it would be worth concentrating on making sure this goes correctly and that you do not run into the same delamination problems. If you do need adhesive film then we have our XA120 which has excellent bond strength to aluminium (and aramid) cores and is available from stock. It's not listed on the website yet but our sales team can help you if you need some. after second test drive compliance get really serious after that we use rohacell only use static parts
	Reply Like 3
Amore	A Amore posted 8 Years Ago HOT Post Details
A Group: Forum Members Posts: 11, Visits: 104	+x Matt (Staff) - 8/24/2017 8:01:46 AM +x Amore - 8/24/2017 7:52:11 AM +x Fasta - 8/24/2017 6:09:29 AM For very light sandwich you can use PVC or acrylic foam core instead but without film glues and this could be lighter than any nomex or alloy honeycomb due to not using film glues. when we cut off the monocoque body the rohacell is crushed and smashed so body compliance was serious problem That sounds very unusual. I can't understand why the Rohacell would be crushed and smashed. Is this after an impact or just after fabrication? Also, if you're getting delamination between the prepreg and the Rohacell this is also a problem which shouldn't happen. However, if you're now set on a course of Aluminium honeycomb then it would be worth concentrating on making sure this goes correctly and that you do not run into the same delamination problems. If you do need adhesive film then we have our XA120 which has excellent bond strength to aluminium (and aramid) cores and is available from stock. It's not listed on the website yet but our sales team can help you if you need some. then can i get tds about xa120?? Edited 8 Years Ago by Amore
	Reply Like 3
Matt (Staff)	Matt (Staff) posted 8 Years Ago HOT Post Details
Group: Forum Members Posts: 680, Visits: 1.9K	We're just putting this together now. We'll add a link to this post in a few days when it's done. Matt Statham Easy Composites / Carbon Mods - Technical Sales
	Reply Like 3

Merge into selected topic...

Merge into merge target...

Merge into a specific topic ID...

Threaded View

pre-preg with aluminum honeycomb

Amore - 8 Years Ago

Yes, it would be fine to use the same adhesive film that you used for the aramid honeycomb with aluminium honeycomb. Make sure of course that the adhesive film has been stored frozen for the whole...

Matt (Staff) - 8 Years Ago

thanks for your reply but i have a question about aluminum honeycomb sandwich pannel if aluminum isoxidized, is there no problem??

Amore - 8 Years Ago

Do you mean that the honeycomb you have shows signs of oxidisation (showing as white corrosion on the foil)? - If this is the case then this will certainly cause some reduction in mechanical...

Matt (Staff) - 8 Years Ago

yes i was worried about galvanic corrosion 2years ago, i've been made aluminum honeycomb sample now it showscorrosion at the surface of course only visible point

Amore - 8 Years Ago

Why did you switch from aramid fiber to aluminium honeycomb?

Jan Christian - 8 Years Ago

because it's too heavy by changing core material , we want to reduce the weight of prepreg

Amore - 8 Years Ago

For very light sandwich you can use PVC or acrylic foam core instead but without film glues and this could be lighter than any nomex or alloy honeycomb due to not using film glues.

Fasta - 8 Years Ago

we've been use rohacell core but at hard point it peel off from skin so we only use at bulk head

Amore - 8 Years Ago

when we cut off the monocoque body the rohacell is crushed and smashed so body compliance was serious problem

Amore - 8 Years Ago

That sounds very unusual. I can't understand why the Rohacell would be crushed and smashed. Is this after an impact or just after fabrication? Also, if you're getting delamination between the prepreg...

Matt (Staff) - 8 Years Ago

after second test drive compliance get really serious after that we use rohacell only use static parts

Amore - 8 Years Ago

then can i get tds about xa120??

Amore - 8 Years Ago

We're just putting this together now. We'll add a link to this post in a few days when it's done.

Matt (Staff) - 8 Years Ago

Fasta is right that in a number of situations, especially for this cores (where the weight of the bond-line is a more significant percentage of the overall core weight) that using a foam without an.....

Matt (Staff) - 8 Years Ago

Amore: What was the carbon fiber fabric weight and how many layers on each side of the1/8 inch aramid fiber Honey comb did you use?

Jan Christian - 8 Years Ago

which part do you mean?? our body has different layer on each part (we use t700) at sideimpact we use 10 each

Amore - 8 Years Ago

Reading This Topic

Login
Remember Me Reset Password Resend Validation Email Login	Facebook Google