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Crack-length measurement by compliance in fracture-toughness testing

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Abstract

The experimental evaluation of crack length in the elastic unloading compliance technique for fracture-toughness testing of compact tension (CT) specimens is discussed with reference to the accuracy required for the digital acquisition of the load and displacement data. In addition, the influence of nonlinearity in the clip-gage output with displacement is considered. The use of a second-order polynomial calibration function is described and discussed.

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Authors and Affiliations

  1. South Eastern Region, Scientific Services Department, Canal Road, Central Electricity Generating Board, Gravesend, Ken, U.K.

    R. F. Smith (Engineer) & P. Doig (Research Officer)

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  1. R. F. Smith
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  2. P. Doig
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Smith, R.F., Doig, P. Crack-length measurement by compliance in fracture-toughness testing. Experimental Mechanics 26, 122–127 (1986). https://doi.org/10.1007/BF02320003

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  • DOI: https://doi.org/10.1007/BF02320003

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