some problem of carbon fibre suspension

[gaoleiHRT-China]

http://fsae.com/groupee_common/emoticons/icon_confused.gifI am from China.our suspension is made of carbon fibre ,but when we connect carbon fibre pipes and aluminium alloy the connection point usually be destoyed.We need help!I need help from the team whose car's suspension is made of carbon fibre!
My email:307947540@qq.com.cn

[gaoleiHRT-China]

http://fsae.com/groupee_common/emoticons/icon_confused.gifI am from China.our suspension is made of carbon fibre ,but when we connect carbon fibre pipes and aluminium alloy the connection point usually be destoyed.We need help!I need help from the team whose car's suspension is made of carbon fibre!
My email:307947540@qq.com.cn

[Xeilos]

Sounds like improper bonding techniques....

I would suggest, post haste, the use of the search function kindly included in this forum.

[exFSAE]

And/or make a set out of steel

[Kirby]

Photos of said destroyed joint?

[Tom W]

Gary Savage wrote a paper in 2007 with the title:
Failure prevention in bonded joints on primary load bearing structures. It is well worth a read.

[Lorenzo Pessa]

Do you use a hot bonded technique?

[gaoleiHRT-China]

<BLOCKQUOTE class="ip-ubbcode-quote"><div class="ip-ubbcode-quote-title">quote:</div><div class="ip-ubbcode-quote-content">Originally posted by Kirby:
Photos of said destroyed joint? </div></BLOCKQUOTE>http://www.fsae-china.com/viewthread.php?tid=1847&extra=
photos is here ,the destroyed poit is too horrible to look at.ahh http://www.fsae-china.com/view....php?tid=1847&extra= (http://www.fsae-china.com/viewthread.php?tid=1847&extra=)

[gaoleiHRT-China]

Yes,right.I want to get some ifo about other teams used carbon carbon fibre suspension<BLOCKQUOTE class="ip-ubbcode-quote"><div class="ip-ubbcode-quote-title">quote:</div><div class="ip-ubbcode-quote-content">Originally posted by Xeilos:
Sounds like improper bonding techniques....

I would suggest, post haste, the use of the search function kindly included in this forum. </div></BLOCKQUOTE>

[gaoleiHRT-China]

sorry,I'm in China now,we can't find it here.would you email it to me.Thanks!my email address:woshigaolei0218@126.com.cn<BLOCKQUOTE class="ip-ubbcode-quote"><div class="ip-ubbcode-quote-title">quote:</div><div class="ip-ubbcode-quote-content">Originally posted by Tom W:
Gary Savage wrote a paper in 2007 with the title:
Failure prevention in bonded joints on primary load bearing structures. It is well worth a read. </div></BLOCKQUOTE>

[Kirby]

<BLOCKQUOTE class="ip-ubbcode-quote"><div class="ip-ubbcode-quote-title">quote:</div><div class="ip-ubbcode-quote-content">Originally posted by gaoleiHRT-China:
<BLOCKQUOTE class="ip-ubbcode-quote"><div class="ip-ubbcode-quote-title">quote:</div><div class="ip-ubbcode-quote-content">Originally posted by Kirby:
Photos of said destroyed joint? </div></BLOCKQUOTE>http://www.fsae-china.com/viewthread.php?tid=1847&extra=
photos is here ,the destroyed poit is too horrible to look at.ahh http://www.fsae-china.com/view....php?tid=1847&extra= (http://www.fsae-china.com/viewthread.php?tid=1847&extra=) </div></BLOCKQUOTE>

Unfortunately, We cant view (we need to login), cant login (need to register) and can't register (need to be invited).

Without seeing the photo, but reading the (google translated) responses of those who have, sounds like a bolt tear out failure. But i'd like to see the photo first.

[gaoleiHRT-China]

http://photo.blog.sina.com.cn/...a0db8b7t937ddd06efdf (http://photo.blog.sina.com.cn/photo/6a0db8b7t937ddd06efdf)
photo is here,hope you can view them

[Drew Price]

Why is there a bolt / pin in there?

I can see the images with that link fine by the way.

Two photos at:

http ://static16.photo.sina.com.cn/middle/6a0db8b7t937ddd06efdf&690

http ://static2.photo.sina.com.cn/middle/6a0db8b7t937ddd05df91&690


Drew

[Lorenzo Pessa]

Are you using also a pin to fix the carbon tube to the alu insert?
What is the hole in the upper side of the carbon tube?

[gaoleiHRT-China]

we hope a bolt can make the connection to be more powerful,but it does not work compoletely<BLOCKQUOTE class="ip-ubbcode-quote"><div class="ip-ubbcode-quote-title">quote:</div><div class="ip-ubbcode-quote-content">Originally posted by Drew Price:
Why is there a bolt / pin in there?

I can see the images with that link fine by the way.

Two photos at:

http ://static16.photo.sina.com.cn/middle/6a0db8b7t937ddd06efdf&690

http ://static2.photo.sina.com.cn/middle/6a0db8b7t937ddd05df91&690


Drew </div></BLOCKQUOTE>

[gaoleiHRT-China]

we hope to use a pin to make the connection to be more powerful.but it does not work compeletely,things we want to know is what glue we should use,and how use it!<BLOCKQUOTE class="ip-ubbcode-quote"><div class="ip-ubbcode-quote-title">quote:</div><div class="ip-ubbcode-quote-content">Originally posted by Lorenzo Pessa:
Are you using also a pin to fix the carbon tube to the alu insert?
What is the hole in the upper side of the carbon tube? </div></BLOCKQUOTE>

[Lorenzo Pessa]

I think you insert weak points making holes in the carbon tube.

If you can try to use only glue to fix the tube.

You can find bonding documentation on the website of Loctite.

For a good bonding it is important the surface preparation. a common error is to sand and clean.
the correct sequence is to clean the surfaces (use specific product or trichloroethylene, not other cleaners! they left impurity). then sand the surface, clean again.