TY - GEN
T1 - Compression behavior of ultra high-modulus carbon/epoxy composites
AU - Glath, M. C.
AU - Koudela, K. L.
AU - Strauch, E. C.
PY - 2013/12/1
Y1 - 2013/12/1
N2 - Among compression test methods for composites, ASTM D3410, SACMA SRM 1R-94, and ASTM D6641 are currently used to determine the compression modulus, E 11c, for ultra-high modulus (UHM, > 350 GPa) composites. In this study, the compressive modulus of a UHM carbon/epoxy composite specimen is experimentally determined via SACMA SRM 1R-94 and ASTM D6641; ASTM D3410 is excluded from the study due to test fixture assembly complexities. A finite element model is developed for each experimental method to calculate the compression modulus of the UHM carbon/epoxy composite. The largest strains are found to be at the specimen ends for SACMA SRM 1R-94 and in the adhesive at the gage end for ASTM D6641. A statistical sensitivity analysis (ANOVA) is used to vary parameters suspected to influence the compression modulus of the UHM carbon/epoxy composite specimen for ASTM D6641. It is found that the compression modulus of the UHM carbon/epoxy composite specimen is most sensitive to the clamping pressure due to bolt torque in the ASTM D6641 test fixture and the UHM specimen thickness.
AB - Among compression test methods for composites, ASTM D3410, SACMA SRM 1R-94, and ASTM D6641 are currently used to determine the compression modulus, E 11c, for ultra-high modulus (UHM, > 350 GPa) composites. In this study, the compressive modulus of a UHM carbon/epoxy composite specimen is experimentally determined via SACMA SRM 1R-94 and ASTM D6641; ASTM D3410 is excluded from the study due to test fixture assembly complexities. A finite element model is developed for each experimental method to calculate the compression modulus of the UHM carbon/epoxy composite. The largest strains are found to be at the specimen ends for SACMA SRM 1R-94 and in the adhesive at the gage end for ASTM D6641. A statistical sensitivity analysis (ANOVA) is used to vary parameters suspected to influence the compression modulus of the UHM carbon/epoxy composite specimen for ASTM D6641. It is found that the compression modulus of the UHM carbon/epoxy composite specimen is most sensitive to the clamping pressure due to bolt torque in the ASTM D6641 test fixture and the UHM specimen thickness.
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M3 - Conference contribution
AN - SCOPUS:84892911229
SN - 9781629931432
T3 - 28th Annual Technical Conference of the American Society for Composites 2013, ASC 2013
SP - 796
EP - 814
BT - 28th Annual Technical Conference of the American Society for Composites 2013, ASC 2013
T2 - 28th Annual Technical Conference of the American Society for Composites 2013, ASC 2013
Y2 - 9 September 2013 through 11 September 2013
ER -