TY - GEN
T1 - An acoustical method of predicting permeability of orthotropic fibers
AU - Sharma, S.
AU - Siginer, D. A.
PY - 2009
Y1 - 2009
N2 - An acoustical method of predicting permeability of orthotropic fibers is presented. The acoustical method uses standardized impedance tube measurement as per ASTM E 1050. Absoprtion coefficient, Reflection coefficient and Impedance ratio are first measured using the impedance tube. Reverse calculation of these acoustical properties yield flow resistivity that is inverse of permeability. The method can measure, glass, carbon and hybrid lay ups of differing porosity values with ease. The impedance tube can be utilized to measure longitudinal and transverse permeability using the method described. Sized and unsized fibers are measured using this technique. Negligible variation in permeability is found due to the absence of sizing.
AB - An acoustical method of predicting permeability of orthotropic fibers is presented. The acoustical method uses standardized impedance tube measurement as per ASTM E 1050. Absoprtion coefficient, Reflection coefficient and Impedance ratio are first measured using the impedance tube. Reverse calculation of these acoustical properties yield flow resistivity that is inverse of permeability. The method can measure, glass, carbon and hybrid lay ups of differing porosity values with ease. The impedance tube can be utilized to measure longitudinal and transverse permeability using the method described. Sized and unsized fibers are measured using this technique. Negligible variation in permeability is found due to the absence of sizing.
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M3 - Conference contribution
AN - SCOPUS:84867852696
SN - 9781615676033
T3 - 24th Annual Technical Conference of the American Society for Composites 2009 and 1st Joint Canadian-American Technical Conference on Composites
SP - 903
EP - 908
BT - 24th Annual Technical Conference of the American Society for Composites 2009 and 1st Joint Canadian-American Technical Conference on Composites
T2 - 24th Annual Technical Conference of the American Society for Composites 2009 and 1st Joint Canadian-American Technical Conference on Composites
Y2 - 15 September 2009 through 17 September 2009
ER -