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Shear Strength of Vinylester

Shear Strength of Vinylester

Shear Strength of Vinylester

(OP)
I wonder if anyone know the shear strength value for Vinylester? or is there a way to calculate it? Please advise.

RE: Shear Strength of Vinylester

Shear strength of the bulk resin is quoted by resin manufacturers or calculate form G=E/2(1+v).  Doesn't have a lot of practical use though.  If after shear strength of a fibreglass laminated joint a figure of 7 MPa (100psi) glue bond area layup strength is used in many codes etc for CSM, with a safety factor of 4 (min) on top of this.  Refer BS4994 or RTP-1 or FRP pipe codes.  BS4994 has table for different FRP ply materials, or refer texts.

RE: Shear Strength of Vinylester

G = shear stiffness; it has nothing to do with shear strength.  Strength in general cannot be calculated.  See material vendor datasheets for typical properties.  Typical shear strength of epoxy materials is in the 8-15 ksi range at room temp; vinylester probably has similar values.

RE: Shear Strength of Vinylester

Contact your manufacturer. If they don't have this most basic of material properties, go somewhere else.

RE: Shear Strength of Vinylester

Lots of those processing values are listed in www.matweb.com by commercial product name.

Composites and Airplanes - what was I thinking?

There are gremlins in the autoclave!

RE: Shear Strength of Vinylester

It depends on many factors, but I think a cloth reinforced panel with Vf = 50% and low voids should be in the 7-8 ksi range.  I seen up to 12 ksi with epoxy/glass uni-broadgoods and generally vinylester has similar properties to an epoxy at room temp.

You want fibers in this resin, right?

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