Carbon Fiber Plane Weave Properties

[oelarwadi]

Hi, 

 

I did an ASTM D3039 test on 3K Plane weave (4 layers, vacuum bagging) with epoxy 105/205, 1.6mm thickness of sample and 138 mm gauge length cured at room temperature. 

 

I got a Tensile Strength of 330MPa and a Youngs Modulus of 17 GPa. 

 

Are these results within the range? 

[lo_0l]

23 minutes ago, oelarwadi said:

Hi, 

 

I did an ASTM D3039 test on 3K Plane weave (4 layers, vacuum bagging) with epoxy 105/205, 1.6mm thickness of sample and 138 mm gauge length cured at room temperature. 

 

I got a Tensile Strength of 330MPa and a Youngs Modulus of 17 GPa. 

 

Are these results within the range? 

@Mason Souther do you have any input you could provide on this? 

[MSouther]

  

On 8/14/2024 at 10:26 AM, oelarwadi said:

Hi, 

 

I did an ASTM D3039 test on 3K Plane weave (4 layers, vacuum bagging) with epoxy 105/205, 1.6mm thickness of sample and 138 mm gauge length cured at room temperature. 

 

I got a Tensile Strength of 330MPa and a Youngs Modulus of 17 GPa. 

 

Are these results within the range? 

 

Sure do! Dependent primarily on what the fiber is. Plain weave is basically a 50/50 split of 0/90 fibers, so you can napkin math based on:

Fiber strength (data sheets are readily available) x 0.50 (half fibers in 0-degree) x 0.60 (assuming a fiber volume of ~60%). 

Otherwise, manufacturers sometimes list fabric composite strength/modulus, which won't vary much with different resins.