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METHOD AND DEVICE FOR TESTING A MATERIAL SAMPLE IN A STANDARD TEST FOR INPLANE FRACTURE TOUGHNESS EVALUATION

  • US 20190323932A1
  • Filed: 07/03/2019
  • Published: 10/24/2019
  • Est. Priority Date: 06/15/2017
  • Status: Active Grant
First Claim
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1. A method of testing a material in a standard test for in-plane fracture toughness evaluation, the material sample of a type used in a wall of a structure, the method comprising:

  • obtaining a sample of the wall of the structure;

    shaping the sample into a notched component, the notched component including a flat bottom surface having a thickness dimension equal to a thickness of the wall of the structure, and a profiled top surface, the profiled top surface having a central notch oriented perpendicular to a plane of the bottom surface, a first socket on a first side of the central notch, and a second socket on a second side of the central notch;

    assembling a test specimen which increases an effective thickness of the sample beyond the thickness of the bottom surface of the notched component by coupling a first lateral extension to the first socket and a second lateral extension to the second socket of the notched component; and

    applying a standard fracture toughness test to the so-assembled test specimen in order to evaluate the fracture toughness of the material in an in-plane direction.

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