Advertisement

Journal of Materials Science

, Volume 20, Issue 3, pp 935–940 | Cite as

Estimating damage laws from bend-test data

  • A. R. Rosenfield
  • D. K. Shetty
  • W. H. Duckworth
Papers

Abstract

Bend-test curves were calculated for materials obeying three very different damage laws. One result of the calculations is that the neutral axis migrates towards the compression face as the load-point displacement increases. For the three damage laws investigated, there is a simple relationship between the location of the neutral axis and the secant modulus derived from the bend-test record; this relationship is quite insensitive to the exact form of the damage law. The stress at a point 20 per cent of the beam depth from the tensile outer fibre is also fairly insensitive to the form of the damage law. Combining these two observations, it is possible to use bend-test data to make a good estimate of the tensile stress-strain curve of a material subject to damage.

Keywords

Polymer Exact Form Simple Relationship Neutral Axis Secant Modulus 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

Preview

Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.

References

  1. 1.
    C. H. Hsueh andA. G. Evans,Acta Metall. 29 (1981) 1907.Google Scholar
  2. 2.
    D. Krajcinovic,J. Appl. Mech. 46 (1979) 592.Google Scholar
  3. 3.
    P. Talty andR. A. Dirks,J. Mater. Sci. 13 (1978) 580.Google Scholar
  4. 4.
    I. Finnie,J. Amer. Ceram. Soc. 49 (1966) 218.Google Scholar
  5. 5.
    R. G. Hoagland, C. W. Marschall, A. R. Rosenfield, G. Hollenberg andR. Ruh,Mater. Sci. Eng. 15 (1974) 51.Google Scholar
  6. 6.
    D. Krajcinovic andM. A. G. Silva,Int. J. Solids Structures 18 (1982) 551.Google Scholar
  7. 7.
    D. K. Shetty andR. S. Gordon,J. Mater. Sci. 14 (1979) 2163.Google Scholar
  8. 8.
    H. Kraus, “Creep Analysis” (Wiley, New York, 1980) p. 64.Google Scholar

Copyright information

© Chapman and Hall Ltd 1985

Authors and Affiliations

  • A. R. Rosenfield
    • 1
  • D. K. Shetty
    • 1
  • W. H. Duckworth
    • 1
  1. 1.Battelle's Columbus LaboratoriesColumbusUSA

Personalised recommendations