material selection and and grades

[leonj]

hi, i'm looking for some help with material selection.
i'm designing a part for a grip that would be used in tensile testing.

it would be testing rubber and at room temps and the most important factors are weight (due to the multiple frequencices the machine can operate) and rigidity (to withstand the vertical forces)

at the moment, i have been looking at titanium and magnesium alloys but these can be relatively expensive especially titanium when compared to aluminium

the mechanism to hold the test piece is through pneumatics which should not need to exceed 6 bar however the piece will have forces of up to 10kN

many thanks bearing in mind this is my first post

 

[patprimmer]

Carbon fibre reinforced epoxy with most of the carbon laid along the line the force is applied.

I am not sure how it will compare cost wise with titanium.

Regards
Pat
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[cloa]

Best to put this in the Materials Engineering subforum as you multiple materials issues- such as how does the gripping to rubber work?