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A general method for estimation of fracture surface roughness: Part II. Practical considerations

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Abstract

Surface roughness is an important attribute of fracture surfaces. An assumption-free method for estimation of surface roughness presented in Part I[1] is analyzed further here. It is shown that three vertical sectioning plane orientations mutually at an angle of 120 deg contain sufficient information for a reliable estimation of surface roughness; in most of the cases, the sampling error due to measurements on a limited number (three) of vertical section orientations should be less than ±6 pct with a confidence limit of 95 pct. A simplified procedure is presented for calculation of a profile structure factor from the measurements of the profile frequency function. A practical example of application of the present analysis involving measurement of the fracture surface roughness of a metal-matrix composite is discussed.

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Authors and Affiliations

  1. School of Materials Engineering, Georgia Institute of Technology, 30332-0245, Atlanta, GA

    A. M. Gokhale (Associate Professor) & W. J. Drury (Graduate Research Assistant)

Authors
  1. A. M. Gokhale
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  2. W. J. Drury
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Gokhale, A.M., Drury, W.J. A general method for estimation of fracture surface roughness: Part II. Practical considerations. Metall Trans A 21, 1201–1207 (1990). https://doi.org/10.1007/BF02656539

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  • DOI: https://doi.org/10.1007/BF02656539

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