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A practical multiplied-moiré system

A sensitive moiré system has been developed for routine engineering measurements, using a replica technique to apply the specimen grids and record the strained grid

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Abstract

This paper describes a multiplied-moiré-fringe system, of in-plane displacement measurement, which is particularly suitable for high-sensitivity studies, both under laboratory conditions and for field studies. A replica technique is used for applying a relief grid to the specimen, and for recording the deformed grid. A fringe-multiplication method is used to give effective line densities in the range 400–2,000 lines/mm (10,000–50,000 lines/in.). Application of the method to fatigue studies is described.

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References

  1. G. Guild, Interference System of Crossed Diffraction Gratings, Clarendon Press (1956).

  2. Post, D., “Analysis of Moiré Fringe Multiplication Phenomena,”Appl. Opt.,6 (11),1938–1942 (Nov. 1967).

    Google Scholar 

  3. Boone, P.M., “A Method for Directly Determining Surface Strain Fields Using Diffraction Gratings,”Experimental Mechanics,11 (11),481–489 (Nov. 1971).

    Google Scholar 

  4. Sciammarella, C. andChang, T.Y., “Optical Differentiation of the Displacement Patterns Using Shearing Interferometry by Wavefront Reconstruction,”Experimental Mechanics,11 (3),97–104 (Mar. 1971).

    Google Scholar 

  5. Durelli, A.J., Chichenev, N.A. andClarke, J.A., “Developments in the Optical Spatial Filtering of Superposed Crossed Gratings,”Experimental Mechanics,12 (11),496–501 (Nov. 1972).

    Google Scholar 

  6. Marchant, M. andBishop, J.M., “An Interference Technique for the Measurement of In-Plane Displacements of Opaque Surfaces,”J. Strain Anal.,9 (1),36–43 (1974).

    Google Scholar 

  7. Boone, P.M., “Increase of Sensitivity of the Moiré Method by Means of Holographic Techniques,”Revue C Tijdschrift,V (8),225–234 (1970).

    Google Scholar 

  8. Post, D., “Moiré Fringe Multiplication with a Nonsymmetrical Doubly Blazed Reference Grating,” Appl. Opt.,10 (4) (Apr. 1971).

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Authors and Affiliations

  1. Center for Industrial Innovation, University of Strathclyde, G4.0LZ, Glasgow, Scotland

    C. A. Walker (Project Leader) & J. McKelvie (Project Leader)

Authors
  1. C. A. Walker
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  2. J. McKelvie
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Walker, C.A., McKelvie, J. A practical multiplied-moiré system. Experimental Mechanics 18, 316–320 (1978). https://doi.org/10.1007/BF02324163

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  • DOI: https://doi.org/10.1007/BF02324163

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