PRODUCTION AND STUDY OF POLYETHER AUXETIC FOAM

Authors

  • Anna Stręk AGH University of Science and Technology

Keywords:

negative Poisson 's ratio, auxetic materials, open cell polyether foam, auxetic polymer foam, microscopic imagery, tensile test

Abstract

The article describes the experiment consisting in production and study of auxetic open-cell polyether foam. In the introduction I briefly explain what auxetic materials are and list their main properties together with possible application areas. Next, detailed information about the background of the experiment is given: important material characteristics and extensive description of the procedure. Further, discussion of the results is presented, basing on microscopic imagery of the obtained auxetic foam. The article describes also tensile tests performed on the produced material and cites quantitative results in the form of text and graphs illustrating the Poisson ratio dependence on deformation, as well as stress-strain relations (true and engineering values). In the final part of the article conclusions are enclosed.

Downloads

Download data is not yet available.

References

Alderson K.L., Webber R.S., Mohammed U.F., Murphy E., Evans K.E. 1997, An Experimental Study of Ultrasonic Attenuation in Micropo-rous Polyethylene. Applied Acoustics, vol. 50, No. 1, January 1997, pp. 23-33(11).

Baur, W.H. 2003, Microporous materials: frameworks under pressure. Nature Materials, vol. 2, Issue 1, pp. 17-18.

Beatty M.F., Stalnaker D.O. 1986, The Poisson Function of Finite Elasticity. Journal of Applied Mechanics, vol. 53, Issue 4, December 1986, pp. 807-813.

Brandel B., Lakes R.S. 2001, Negative Poisson's ratio polyethylene foams. Journal of Materials Science, vol. 36, No. 24, July 2001, pp. 3885-5893.

Caddock B.D., Evans K.E. 1989, Microporous materials with negative Poisson's ratio: I. Microstructure and mechanical properties. Journal of Physics D: Applied Physics, vol. 22, No. 12, pp. 1877-1882.

Chen C.P., Lakes R.S. 1989, Dynamic wave dispersion and loss properties of conventional and negative Poisson's ratio polymeric cellular materials. Cellular Polymers, No. 8(5), pp. 343-59.

Chen C.P., Lakes R.S. 1993, Viscoelastic behavior of composite materials with conventional- or negative-Poisson's-ratio foam as one phase. Journal of Materials Science, vol. 28, No. 16, pp. 4288-98.

Chen C.P., Lakes R.S. 1996, Micromechanical analysis of dynamic behavior of conventional and negative Poisson's ratio foams. Journal of Engineering Materials and Technology, vol. 118, Issue 3, pp. 285-288.

Choi J.B., Lakes R.S. 1992, Nonlinear properties ofpolymer cellular materials with a negative Poisson's ratio. Journal of Material Science, vol. 27, No. 17, pp. 4679-4684.

Donoghue J.P., Evans K.E. 1991, Composite laminates with enhanced indentation and fracture resistance due to negative Poisson's ratio. W.S. Tsai, & G. Springer, Proceedings of 8th International Conference on Composite Materials (ICCM-8), pages 2-K-1-2-K-10. Honolulu, Hawaii: Society for the Advancement of Material and Process Engineering (SAMPE), Covina, CA.

Evans K.E., Alderson A. 2000, Auxetic Materials: Functional Materials and Structures from Lateral Thinking! Advanced Materials, vol. 12, Issue 9, pp. 617-628.

Friis E.A., Lakes R.S., Park J.B. 1988, Negative Poisson's ratio polymeric and metallic foams. Journal of Materials Science, vol. 23, pp. 4406-4414.

Glieck J. 1987, April 14, The New York Times.

Gunton D.J., Saunders G.A. 1972, The Young's modulus and Poisson's ratio of arsenic, antimony and bismuth. Journal of Materials Science, vol. 7, No. 9, pp. 1061-1068.

Howell B., Prendergast P., Hansen L. 1991, Acoustic Behavior of Negative Poisson's Ratio Materials. Annapolis, MD: David Taylor Research Centre.

Lakes R.S. 1991, Deformation mechanisms in negative Poisson's ratio materials: structural aspects. Journal of Material Science, vol. 26, No. 9, pp. 2287-2292.

Lakes R.S. 1987, Foam structures with a negative Poisson's ratio. Science vol. 235, No. 4792, pp. 1038-1040.

Lakes R.S. 2002-2010, http://silver.neep.wisc.edu/~lakes/. Date of last opening 17th March 2010.

Lakes R.S. 2002-2010, What is Poisson's ratio? http://silver.neep.wisc. edu/~lakes/PoissonIntro.html. Date of last opening 4th March 2010.

Lakes R.S., Witt R. 2002, Making and characterizing negative Poisson's ratio materials. International Journal of Mechanical Engineering Education, vol. 30, No. 1, pp. 50-58.

Li Y. 1976, The anisotropic behavior of Poisson's ratio, Young's modulus, and shear modulus in hexagonal materials. Physica Status Solidi (a), vol. 38, Issue 1, pp. 171-175.

Milton G. 1992, Composite materials with Poisson's ratios close to -1. Journal of the Mechanics and Physics of Solids, vol. 40, Iissue 5, pp. 1105-1137.

Veronda D.R., Westmann R.A. 1970, Mechanical characterization of skin-finite deformation. Journal of Biomechanics 3, vol. 19, pp. 111-124.

Wang Y.-C., Lakes R.S., Butenhoff A. 2001, Influence of Cell Size on ReEntrant Transformation of Negative Poisson's Ratio Reticulated Polyurethane Foams. Cellular Polymers, vol. 20, Issue 6, pp. 373-385.

Downloads

Published

2010-07-22

Issue

Section

Articles