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Brent Howard
11-08-2003, 04:02 PM
Anyone care to share what density they use for carbon fiber and fiberglass? I'm just working on the cost report and am not quite sure what to use because it varies so much.

Brent

www.ucalgary.ca/fsae (http://www.ucalgary.ca/fsae)
Brent Howard
11-08-2003, 04:02 PM
Anyone care to share what density they use for carbon fiber and fiberglass? I'm just working on the cost report and am not quite sure what to use because it varies so much.

Brent

www.ucalgary.ca/fsae (http://www.ucalgary.ca/fsae)
radgata_racing
11-17-2003, 05:34 PM
Brent,
That's what we're using at work to estimate composite panel's weight:

Carbon: 8 thou thick
radgata_racing
11-17-2003, 05:37 PM
Sorry, screwed up with the buttons http://fsae.com/groupee_common/emoticons/icon_smile.gif

I was saying:
Carbon: 8 thou thick 0.00044 lbs/in2
Glass: 12.7 thou thick 0.00085 lbs/in2

Hope this helps
Stephane
Brent Howard
11-17-2003, 05:39 PM
Thanks so much stephane. So many views and no one had any idea.

Brent

www.ucalgary.ca/fsae (http://www.ucalgary.ca/fsae)
Frank
11-17-2003, 11:40 PM
SG= 1.6 - 1.8 at a guess

silicon is about 2.2, so is carbon,(density of the earth also)

epoxy about 1.2

why not just weigh the part when you finish?

[This message was edited by Frank on November 18, 2003 at 02:51 AM.]
Scott Wordley
11-17-2003, 11:57 PM
Why not:
1: measure the area of the part
2: determine what weight cloth you use (200gsm)
3: Count the number of layers used
4: multiply 1 by 2 by 3
5: Add epoxy

Or as Frank said just weigh it.

Regards,

Scott Wordley

http://www-personal.monash.edu.au/~fsae
Brent Howard
11-18-2003, 07:40 AM
We don't have the parts finished yet, but I would like to start on the cost report based on the model. Plus, you charge cost based on weight, and I will charge based on if the carbon fiber or fiberglass was done right, not pathed with bondo on the bodywork, and filled with too much resin because our vaccuum bagger didn't work.

Brent

www.ucalgary.ca/fsae (http://www.ucalgary.ca/fsae)
Mi_Ko
11-18-2003, 03:02 PM
Hey why don't you use the easyest way:

Material database (http://www.matweb.com)

http://fsae.com/groupee_common/emoticons/icon_smile.gif

hint: click on material type

2002/03 University of MARIBOR - Team Member