Mechanical Properties of a Metal Powder-Loaded Polyurethane Foam

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Description

Quasi-static compression tests have been performed on polyurethane foam specimens. The modulus of the foam exhibited a power-law dependence with respect to density of the form: E* {proportional_to} {rho}*{sup n}, where n = 1.7. The modulus data is well described by a simple geometric model (attributed to the work of Gibson and Ashby) for closed-cell foam in which the stiffness of the foam is governed by the flexure of the cell struts and cell walls. The compressive strength of the foam is also found to follow a power-law behavior with respect to foam density. In this instance, Euler buckling is ... continued below

Physical Description

41 p.

Creation Information

Neuschwanger, C. L.; Whinnery, L. L. & Goods, S. H. April 1, 1999.

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This report is part of the collection entitled: Office of Scientific & Technical Information Technical Reports and was provided by UNT Libraries Government Documents Department to Digital Library, a digital repository hosted by the UNT Libraries. More information about this report can be viewed below.

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  • Sandia National Laboratories
    Publisher Info: Sandia National Labs., Albuquerque, NM, and Livermore, CA (United States)
    Place of Publication: Albuquerque, New Mexico

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Description

Quasi-static compression tests have been performed on polyurethane foam specimens. The modulus of the foam exhibited a power-law dependence with respect to density of the form: E* {proportional_to} {rho}*{sup n}, where n = 1.7. The modulus data is well described by a simple geometric model (attributed to the work of Gibson and Ashby) for closed-cell foam in which the stiffness of the foam is governed by the flexure of the cell struts and cell walls. The compressive strength of the foam is also found to follow a power-law behavior with respect to foam density. In this instance, Euler buckling is used to rationalize the density dependence. The modulus of the polyurethane foam was modified by addition of a gas atomized, spherical aluminum powder. Additions of 30 and 50 weight percent of the powder significantly increased the foam modulus. However, there were only slight increases in modulus with 5 and 10 weight percent additions of the metal powder. Strength was also slightly increased at high loading fractions of powder. This increase in modulus and strength could be predicted by combining the above geometric model with a well-known model describing the effect on modulus of a rigid dispersoid in a compliant matrix.

Physical Description

41 p.

Notes

OSTI as DE00006172

Medium: P; Size: 41 pages

Source

  • Other Information: PBD: 1 Apr 1999

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  • Report No.: SAND99-8200
  • Grant Number: AC04-94AL85000
  • DOI: 10.2172/6172 | External Link
  • Office of Scientific & Technical Information Report Number: 6172
  • Archival Resource Key: ark:/67531/metadc693391

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  • April 1, 1999

Added to The UNT Digital Library

  • Aug. 14, 2015, 8:43 a.m.

Description Last Updated

  • April 12, 2017, 3:08 p.m.

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Neuschwanger, C. L.; Whinnery, L. L. & Goods, S. H. Mechanical Properties of a Metal Powder-Loaded Polyurethane Foam, report, April 1, 1999; Albuquerque, New Mexico. (digital.library.unt.edu/ark:/67531/metadc693391/: accessed September 21, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.