matt and Woven Roving or ud and bix

[hareb]

hi guys i have been making boats out of matt and woven rovin, and i,m thinking of moving in to the biax and the ud with core. so i would like to ask what are the bad side and the good side of both Materials and the bad side
thank you

[marshmat]

Mat/roving is a fairly traditional combination, well proven but not very high-tech or exciting. It's an easy-to-use system and not too expensive.
Cored structures are inherently much more difficult to design, but can be far stronger per kilogram than plain solid layups. With biaxial and unidirectional cloths you can concentrate strength where it is needed most, and not waste material in directions that take smaller loads. Designing with these materials is a lot more difficult, though, since to take full advantage of their properties you need a good knowledge of the stress distributions in the structure.
If you are thinking of starting work with higher-tech materials, it's probably a good idea to track down some books or suppliers' info on how to use them well.

[prabath]

Originally Posted by hareb

hi guys i have been making boats out of matt and woven rovin, and i,m thinking of moving in to the biax and the ud with core. so i would like to ask what are the bad side and the good side of both Materials and the bad side
thank you

bad side is back side

[yokebutt]

Hareb,

Try to get over for IBEX in Florida.

Yoke.

[Bad_Trim]

If you need assistance with re-designing the laminate, send me an email.

[myastral]

What are the best books for information on how large fibeglass hulls are made and were can I find more information ABYC just isnt that useful

Steve Forest