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Damping Factor Estimation of a Flexible-Matrix-Composite Body Pump

DOI: 10.4236/msce.2016.47009, PP. 59-66

Keywords: Flexible-Matrix-Composites, Dynamic Mechanical Analyzer, Viscoelastic Characteristics, Damping Factor

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Abstract:

Two very important factors which determine the effectiveness of a pump are its volumetric and power efficiencies. Yin and Ghoneim constructed a prototype of a Flexible-Matrix-Composite (FMC) body pump with a very high volumetric efficiency or pumping potential (the relative volume reduction due to a relative input stroke). The high volumetric efficiency is attributed to the geometry of the pump’s structure (hyperboloid) as well as the high negative effective Poisson’s ratio of the 3-layer [θ/β/θ] flexible-matrix-composite (carbon/polyurethane) laminate adopted for the body of the pump. However, the power efficiency of the pump was not evaluated. It is the objective of the current paper to obtain an estimate of the power efficiency of the pump. The viscoelastic properties of the 3-layer FMC (carbon/polyurethane) laminate are evaluated experimentally using the Dynamic Mechanical Analyzer (DMA) as well as analytically by applying the correspondence principle together with the micro-mechanics approach. In order to obtain an estimate of the power efficiency of the FMC body pump, the axial and shear loss factors of a laminated infinitely long cylindrical tube as functions of β and θ fiber orientation angles are determined employing the Adam and Bacon approach. The analysis engenders high loss factors (greater than 0.4), which suggests that the power efficiency of the proposed pump using the 3-layer carbon/polyurethane laminate may be low.

References

[1]  Nawroth, J. and Dabiri, J. (2010) Fluid Transport in Muscular Pumps at Intermediate Reynolds Numbers. 63rd Annual Meeting of American Physical Society, Division of Fluid Dynamics, Long Beach, Vol. 55.
[2]  Chanda, A. and Ghoneim, H. (2015) Pumping Potential of a Two-Layer Left-Ventricle-Like Flexible-Matrix-Compo- site Structure. Composite Structures, 570-575. http://dx.doi.org/10.1016/j.compstruct.2014.11.069
[3]  Yin, Z. and Ghoneim, H. (2014) Pumping Potential of a Flexi-ble-Matrix-Composite Structure with Negative Poisson’s Ratio. Abstracts of 1st International Conference on Mechanics of Composites, Stony Brook University, Long Island, 9-12 June 2014.
[4]  Lotfi-Gaskarimahalle, A., Scarborough III, L.H., Rahn, C.D. and Smith, E.C. (2014) Tunable Fluidic Composite Mounts for Vibration Absorber. Journal of Vibration and Control, 4, 2137-2145. http://dx.doi.org/10.1177/1077546313482340
[5]  Gureghian, R.S., Carlson, J.D., LeRoy, D.F., Marjoram, R.H., Brown, M.B. and Jolly, M.R. (1999) Controllable Platform Suspension System for Treadmill Decks and Like Devices Therefor. Patent US 5993358 A.
[6]  Kumar, N., Varela, B. and Ghoneim, H. (2015) Effective Damping of a Flexible-Matrix-Composite Laminate with a Negative Effective Poisson’s Ratio. Proceedings of the ASME 2015 International Mechanical Engineering Congress and Exposition, IMECE2015-50365, Houston, 13-19 November 2015. http://dx.doi.org/10.1115/imece2015-50365
[7]  Hashin, Z. (1970) Complex Moduli of Viscoelastic Composites—II Fiber Reinforced Materials. International Journal of Solids and Structures, 6, 797-807. http://dx.doi.org/10.1016/0020-7683(70)90018-1
[8]  Fukushima, K., Cai, H., Nakada, M. and Miyano, Y. (2009) Determination of Time-Temperature Shift Factor for Long-Term Life Prediction of Polymer Composites. ICCM-17, 17th International Conference on Composite Materials.
[9]  Tschoegl, N.W., Wolfgang, W.G. and Emri, I. (2002) Poisson’s Ratio in Linear Viscoelasticicty—A Critical Review. Mechanics of Time Dependent Materials, 6, 3-51. http://dx.doi.org/10.1023/A:1014411503170
[10]  Melo, J.D.D. andRadford, D.W. (2003) Viscoelastic Characterization of Transversely Isotropic Composite Laminates. Journal of Composite Mate-rials, 37.
[11]  Barbero, E.J. (2011) Intro to Composite Materials Design. CRC Press, Taylor & Francis Group.
[12]  (2007) Dynamic Mechanical Analysis Basics: Part 1 How DMA Works, Technical Note. www.perkinselmer.com
[13]  Adams, R.D. and Bacon, D.G.C. (1973) Effect of Fiber Orientation and Laminate Geometry on the Dynamic Properties of CFRP. Journal of Composite Materials, 7.
[14]  Herakovich, C.T. (1998) Mechanics of Fibrous Composites. John Wiley & Sons, Inc., 362-393.

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