Metrological evaluation of a flaw detector used in non-destructive testing by ultrasound

8th Brazilian Congress on Metrology

Mayworm, R.C.^1 ; Alvarenga, A.V.^1 ; Costa-Felix, R.P.B.^1

Laboratory of Ultrasound (Labus), Directory of Scientific and Industrial Metrology (Dimci), National Institute of Metrology, Quality and Technology (Inmetro), Av. Nossa Sra. das Graças 50, Duque de Caxias

RJ

25250-020, Brazil^1

关键词: Flaw detection;    Flaw detector;    Maximum error;    Non destructive testing;    Non-destructive test;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/733/1/012051/pdf
DOI  :  10.1088/1742-6596/733/1/012051

来源: IOP

【 摘 要 】

Nondestructive tests are widely used in various sectors of industry, and its main techniques are based on the use of ultrasound. The flaw detector is a device used in ultrasonic testing. In this article, it is studied the influence of the flaw detection settings on the measurement result. It was observed that when the speed of sound and the thickness of the standard block are known, the equipment gives the best results, with a maximum error of 08%. The results show the importance of having a standard block calibrated in order to minimize errors.