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Method for the non-destructive testing of a casing

  • US 10,458,906 B2
  • Filed: 01/30/2018
  • Issued: 10/29/2019
  • Est. Priority Date: 01/31/2017
  • Status: Active Grant
First Claim
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1. A method for non-destructive testing of a heating of a part made from polymer material, the method comprising:

  • a) carrying out a measurement by infrared spectroscopy at a region of said part to be tested and extracting therefrom test values comprising at least one selected from the group of absorbance values and transmittance values according to a spatial frequency;

    b) from test values, determining an interval of spatial frequencies relating to an oxidation of a polymer of said region of the part; and

    c) from the test values in said interval of spatial frequencies, determining a period of time during which said region of the part to be tested has been subjected to a given heating temperature and determining said given heating temperature, using a reference database comprising sample values including at least one selected from the group of absorbance measurements and transmittance measurements, the sample values established over a plurality of reference samples made from polymer material that have been subjected to a given temperature during a given period of time, both the given temperature and the given period of time varying among the plurality of reference samples so as to cover a plurality of periods of time and a plurality of temperatures.

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