T. Dickson et al., SELECTION OF AN INPLANE SHEAR TEST METHOD BASED ON THE SHEAR SENSITIVITY OF LAMINATE TENSILE MODULUS, Composites, 26(1), 1995, pp. 17-24
The sensitivity of the tensile modulus for a number of Hercules AS4/35
01-6 laminates to changes in the values of in-plane shear modulus was
used to select the fibre orientations for four highly shear-sensitive
laminates of the form [+/- theta(1), +/- theta(2)](3S). The in-plane s
hear moduli for the Hercules AS4/3501-6 composite material were then d
etermined for 90 degrees Iosipescu, 10 degrees off-axis tensile and +/
-45 degrees tensile specimens. These values were used with classical l
aminate plate theory to predict laminate tensile moduli. The best agre
ement between these predicted values and those which were experimental
ly measured was obtained when the +/-45 degrees tensile test method wa
s used to determine the in-plane shear modulus.