Improved composite material damping using high damping graphite fibers

George A. Lesieutre, Dana Christiansen, Walt Whatley, Shridhar Yarlagadda

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Citation (Scopus)

Abstract

Increased damping has been demonstrated for graphite/epoxy composite material made using bromine-intercalatefd graphite fiber. A resonant forced-vibration test method was used to measure the damping of unidirectional graphite/epoxy flexural specimens, at frequencies of about 100 hz, and at temperatures ranging from -120 to +30 degrees C. Specimens made from pristine P-100 as well as treated P-100 graphite fibers were characterized. The peak damping ratio observed for the pristine fiber composites was 8 × 10-4 (damping capacity of 1%), while that exhibited by the brominated fiber composites was 16 × 10-4 (damping capacity of 2%). These results are consistent with previous studies of the damping properties of single graphite fibers. Additional theoretical results indicate that, contrary to state-of-the-art composite design principles, the damping of quasi-isotropic composite materials made using these treated graphite fibers could be dominated by fiber damping instead of matrix shear damping.

Original languageEnglish (US)
Title of host publicationComposite Material Technology - 1991
EditorsDavid Hui, Thomas J. Kozik
PublisherPubl by ASME
Pages21-24
Number of pages4
Volume37
StatePublished - 1991
EventProceedings of the 14th Annual Energy-Sources Technology Conference and Exhibition - Houston, TX, USA
Duration: Jan 20 1991Jan 23 1991

Other

OtherProceedings of the 14th Annual Energy-Sources Technology Conference and Exhibition
CityHouston, TX, USA
Period1/20/911/23/91

Fingerprint

Graphite fibers
graphite
damping
Damping
Composite materials
Fibers
Graphite epoxy composites
fibre
material
Bromine
bromine
Vibrations (mechanical)
vibration
Graphite
matrix

All Science Journal Classification (ASJC) codes

  • Geology
  • Geotechnical Engineering and Engineering Geology

Cite this

Lesieutre, G. A., Christiansen, D., Whatley, W., & Yarlagadda, S. (1991). Improved composite material damping using high damping graphite fibers. In D. Hui, & T. J. Kozik (Eds.), Composite Material Technology - 1991 (Vol. 37, pp. 21-24). Publ by ASME.
Lesieutre, George A. ; Christiansen, Dana ; Whatley, Walt ; Yarlagadda, Shridhar. / Improved composite material damping using high damping graphite fibers. Composite Material Technology - 1991. editor / David Hui ; Thomas J. Kozik. Vol. 37 Publ by ASME, 1991. pp. 21-24
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abstract = "Increased damping has been demonstrated for graphite/epoxy composite material made using bromine-intercalatefd graphite fiber. A resonant forced-vibration test method was used to measure the damping of unidirectional graphite/epoxy flexural specimens, at frequencies of about 100 hz, and at temperatures ranging from -120 to +30 degrees C. Specimens made from pristine P-100 as well as treated P-100 graphite fibers were characterized. The peak damping ratio observed for the pristine fiber composites was 8 × 10-4 (damping capacity of 1{\%}), while that exhibited by the brominated fiber composites was 16 × 10-4 (damping capacity of 2{\%}). These results are consistent with previous studies of the damping properties of single graphite fibers. Additional theoretical results indicate that, contrary to state-of-the-art composite design principles, the damping of quasi-isotropic composite materials made using these treated graphite fibers could be dominated by fiber damping instead of matrix shear damping.",
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Lesieutre, GA, Christiansen, D, Whatley, W & Yarlagadda, S 1991, Improved composite material damping using high damping graphite fibers. in D Hui & TJ Kozik (eds), Composite Material Technology - 1991. vol. 37, Publ by ASME, pp. 21-24, Proceedings of the 14th Annual Energy-Sources Technology Conference and Exhibition, Houston, TX, USA, 1/20/91.

Improved composite material damping using high damping graphite fibers. / Lesieutre, George A.; Christiansen, Dana; Whatley, Walt; Yarlagadda, Shridhar.

Composite Material Technology - 1991. ed. / David Hui; Thomas J. Kozik. Vol. 37 Publ by ASME, 1991. p. 21-24.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

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N2 - Increased damping has been demonstrated for graphite/epoxy composite material made using bromine-intercalatefd graphite fiber. A resonant forced-vibration test method was used to measure the damping of unidirectional graphite/epoxy flexural specimens, at frequencies of about 100 hz, and at temperatures ranging from -120 to +30 degrees C. Specimens made from pristine P-100 as well as treated P-100 graphite fibers were characterized. The peak damping ratio observed for the pristine fiber composites was 8 × 10-4 (damping capacity of 1%), while that exhibited by the brominated fiber composites was 16 × 10-4 (damping capacity of 2%). These results are consistent with previous studies of the damping properties of single graphite fibers. Additional theoretical results indicate that, contrary to state-of-the-art composite design principles, the damping of quasi-isotropic composite materials made using these treated graphite fibers could be dominated by fiber damping instead of matrix shear damping.

AB - Increased damping has been demonstrated for graphite/epoxy composite material made using bromine-intercalatefd graphite fiber. A resonant forced-vibration test method was used to measure the damping of unidirectional graphite/epoxy flexural specimens, at frequencies of about 100 hz, and at temperatures ranging from -120 to +30 degrees C. Specimens made from pristine P-100 as well as treated P-100 graphite fibers were characterized. The peak damping ratio observed for the pristine fiber composites was 8 × 10-4 (damping capacity of 1%), while that exhibited by the brominated fiber composites was 16 × 10-4 (damping capacity of 2%). These results are consistent with previous studies of the damping properties of single graphite fibers. Additional theoretical results indicate that, contrary to state-of-the-art composite design principles, the damping of quasi-isotropic composite materials made using these treated graphite fibers could be dominated by fiber damping instead of matrix shear damping.

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Lesieutre GA, Christiansen D, Whatley W, Yarlagadda S. Improved composite material damping using high damping graphite fibers. In Hui D, Kozik TJ, editors, Composite Material Technology - 1991. Vol. 37. Publ by ASME. 1991. p. 21-24