An evaluation of the arcan specimen for determining the shear moduli of fiber-reinforced composites |
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| Authors: | S C Hung K M Liechti |
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| Institution: | (1) Engineering Mechanics Research Laboratory, Department of Aerospace Engineering and Engineering Mechanics, University of Texas at Austin, 78712 Austin, TX |
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| Abstract: | Moiré interferometry was used to examine the strain distributions in Arcan-type specimens under shear loading. The compact
geometry allowed longitudinal and transverse shear behavior to be considered. The best results for longitudinal moduli were
obtained with fibers running from notch to notch. As with the losipescu configuration, strain averaging or correction factors
were required for modulus determination in all fiber orientations. None of the bending problems that have been encountered
in the losipescu specimen were observed. Some twisting was noticed, but its extent (less than 2 percent) was much less than
has been noted in shear testing with losipescu specimens. |
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| Keywords: | Composite materials longitudinal shear transverse shear Arcan moiré interferometry |
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