Talk Composites - The Forum for Advanced Composites

Advice on Set up for this long,narrow part

http://www.talkcomposites.com/Topic10241.aspx

By brettalloy - 3/13/2014 4:20:16 PM

Hi Guys.

 

Looking to infuse this part. Please have a look at diagrams attached.
I had an unsuccessful first infusion other day. My setup was the standard easycomp spec of resin feed spiral wrap all along length (but not the 2 ends) vac connection opposite with the 2 layers mesh for airflow. Part covered in infusion mesh. Main issues were resin barely making it to far ends (not surprising) and resin getting to vac line way before far ends had infused (again unsurprising)

 

So my thoughts were:

 

Option 1 (Fig. A): Abit of the first method , plus the standard centre feed infusion method. I would run spiral wrap wrapped in peelply, rather than double mesh along the length and also 2 ends.

Resin feed along length but maybe stopping short (x dims?)To try keep resin away from the vac spiral and possibly into the vac line before all part is completely infused, maybe not an issue tho!

 

Option 2 (Fig.B): Same standard set up but resin feed along length and also the 2 ends, plus maybe even taping up the the wrap partially along length to ensure plenty resin gets to the far end. Plus also stopping mesh short around the vac inlet to slow down the resin feed to remedy the problems i had.

By Brian_s - 3/17/2014 8:54:52 AM

"Brian, is Figure D like how you described?  Do I need spiral wrap around perimeter like shown to ensure a good even vacuum?"

No. I just used spiral where I have marked. About 200mm across the corner and 100mm at each end. The infusion mesh and fabric will make the vacuum equal.

Brian.