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Zero-shift evaluation of automatic strain-gage systems based on direct and reverse current method

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Abstract

Solid-state digital-multimeters are being used in multichannel automatic data-acquisition systems to determine strain values from strain-gage resistance evaluation rather than using conventional Wheatstone bridge. Both the direct-resistance method and the reverse current one are examined in two tests. Each one lasted for two weeks. Irrelevant differences were observed between the two methods in spite of the adopted general-purpose low-cost switch-control unit.

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Authors and Affiliations

  1. University of Rome, “La Sapienza”, Via Eudossiana, 18, 00184, Rome, Italy

    P. Cappa (Associate Professor) & Z. Del Prete (Researcher)

  2. Department of Aerospace and Engineering Mechanics, University of Iowa, 50011, Ames, IA

    K. G. McConnell (Professor) & L. Zachary (Professor)

Authors
  1. P. Cappa
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  2. Z. Del Prete
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  3. K. G. McConnell
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  4. L. Zachary
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Cappa, P., Del Prete, Z., McConnell, K.G. et al. Zero-shift evaluation of automatic strain-gage systems based on direct and reverse current method. Experimental Mechanics 33, 293–299 (1993). https://doi.org/10.1007/BF02322144

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  • DOI: https://doi.org/10.1007/BF02322144

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