An acoustical method of predicting permeability of orthotropic fibers

S. Sharma; D. A. Siginer

An acoustical method of predicting permeability of orthotropic fibers

Mechanical, Energy & Industrial Engineering

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Abstract

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.

Original language	English
Title of host publication	24th Annual Technical Conference of the American Society for Composites 2009 and 1st Joint Canadian-American Technical Conference on Composites
Pages	903-908
Number of pages	6
Volume	2
Publication status	Published - Dec 1 2009
Event	24th Annual Technical Conference of the American Society for Composites 2009 and 1st Joint Canadian-American Technical Conference on Composites - Newark, DE, United States Duration: Sep 15 2009 → Sep 17 2009

Other

Other	24th Annual Technical Conference of the American Society for Composites 2009 and 1st Joint Canadian-American Technical Conference on Composites
Country	United States
City	Newark, DE
Period	9/15/09 → 9/17/09

All Science Journal Classification (ASJC) codes

Ceramics and Composites

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Sharma, S., & Siginer, D. A. (2009). An acoustical method of predicting permeability of orthotropic fibers. In 24th Annual Technical Conference of the American Society for Composites 2009 and 1st Joint Canadian-American Technical Conference on Composites (Vol. 2, pp. 903-908)

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abstract = "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.",

author = "S. Sharma and Siginer, {D. A.}",

year = "2009",

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day = "1",

language = "English",

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note = "24th Annual Technical Conference of the American Society for Composites 2009 and 1st Joint Canadian-American Technical Conference on Composites ; Conference date: 15-09-2009 Through 17-09-2009",

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Sharma, S & Siginer, DA 2009, An acoustical method of predicting permeability of orthotropic fibers. in 24th Annual Technical Conference of the American Society for Composites 2009 and 1st Joint Canadian-American Technical Conference on Composites. vol. 2, pp. 903-908, 24th Annual Technical Conference of the American Society for Composites 2009 and 1st Joint Canadian-American Technical Conference on Composites, Newark, DE, United States, 9/15/09.

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AU - Siginer, D. A.

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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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