Hello,

i need to to determine the sandwich panel flexural strength and stiffness following ASTM C393 which is updated to ASTM D 7250.

The face sheet is of carbon fiber(phenolic resin) and core of Aluminium AL5056.the strength values for the Aluminum is quoted in the manufacturer's literature(coupon test results).

i am looking for guidelines for selection of specimen dimensions and loading configuration and most importantly the guidelines on the test fixture setup with recommended geometries and specifications(material of load application apparatus,load span,recommended geometry and material of reaction supports etc).

thank you,

regards,      

Are you making a new product or a improved composite version of a current item ?

If your doing a improved version do like for like test,an take your baseline figure from the original item