Lay up part 2

Lay up part 2

Ben

8/6/2002

Here at Texas Scottish Rite Hospital in Dallas we have a standard lay up and then we add or take away from that. Example I'm a BK and my socket is made up of 1 Dacron, 8 nyglass and 2 1 strips of carbon to reinforce the distal plate.

My weight is 226 lbs.

I would be more than happy to fax you a copy of our lay ups so you could play we use more glass now than carbon. Do you want me to fax or e-mail them.



Thanks,

Robert Carlile, RTPO

Prosthetics Lab Supervisor

Texas Scottish Rite Hospital

2222 Welborn

Dallas, Tx 75219

214-559-7440

<Email Address Redacted>





hi ben. i'd talk to the supplier where you purchase the carbon. they

should

be able to tell you what amount of lay ups are needed for a particular

weight

range. it's going to depend on the make up of the carbon your using.



luke richards





Hi Ben



It is more important to consider the following with regards ot

lamination

as they all have an influence over the final strength:

   Location within the socket wall and orientation of the fibers.

Stronger

   fibres should be towards the surface and orientated in the direction

of

   the load.

   Percentage of resin remaining in the fibers (how much you string

out).

   Difficult to quantify, but in general more is better

   Shape of the socket (curvature). The smaller diameter it is the

thinner

   the the walls can be.



Hope this helps



Ian Fothergill,

<Email Address Redacted>

www.ossur.com



All I can tell you is that are standard layup on a person up to 240#'s

is: 1 layer of dacron on the proximal portion, (approx. 1-11/2 inches

distal to the PT bar), 2 layers of ny-glass in the same region as the

dacron, 2 layers of carbon over the entire length of the mold, & 2

layers of ny-glass over the entire length of the mold. The finish lam

consists of 2 layers of ny-glass over the entire limb.(whether endo or

exo, but flex-foot and the like require additional layups). The dacron

is not used for strength, but for thickness as this is the area most

likely to be adjusted. We have tried less material for lighter

individuals, but in the long run they do not stand up to the wear &

tear.(spider cracks & the like). For people over 240#'s we add 2

additional layers of carbon over the entire mold. By the way, we only

use epoxy resin. I realize that this does not really answer your

question, but I hope it helps you somewhat.



A Colleague,



E. Reed Coleman, C.P., L.P.O.





Cascade's Carbon Component Class



carbon 2 glass and carbon 0-165 lbs

carbon 4 glass and carbon 165 to 200 lbs

carbon 2 glass carbon 2 glass carbon (double I-beam) 200 to 325



You can add a lot of strength with selective use of double I-beam,

using

strips of carbon in areas you know you will not cut out such as a

framed ak

socket. Do not use carbon tape use strips of carbon weave same as on

the

inside or outside.



Any additional info???







********* Thank you to all who helped****************

                Ben Lawson RTO







---------------------------------
Do You Yahoo!?
Yahoo! Health - Feel better, live better

                          ********************
To unsubscribe, send a message to: <Email Address Redacted> with
the words UNSUB OANDP-L in the body of the
message.

If you have a problem unsubscribing,or have other
questions, send e-mail to the moderator
Paul E. Prusakowski,CPO at <Email Address Redacted>

OANDP-L is a forum for the discussion of topics
related to Orthotics and Prosthetics.

Public commercial postings are forbidden. Responses to inquiries
should not be sent to the entire oandp-l list. Professional credentials
or affilliations should be used in all communications.