FIELD: testing engineering.
SUBSTANCE: method comprises heating and cooling the article, measuring the temperature of the article, and determining the rate of cooling for each elementary area of the article. The article is cooled by a fluid made of a mixture of gas and liquid. The flow rate of the liquid is measured, and the presence of a defect is judged by deviation of the ratio ΔV from unity, which is determined for each elementary area of the article surface .
EFFECT: enhanced precision.
3 cl, 2 dwg
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