Title: Experimental investigation of time-power transformation method for flash-pulse thermographic testing
Other Titles: Experimentální výzkum metody "time power transformation" pro flash pulzní termografii
Authors: Muzika, Lukáš
Švantner, Michal
Moskal, Denys
Citation: MUZIKA, L., ŠVANTNER, M., MOSKAL, D. Experimental investigation of time-power transformation method for flash-pulse thermographic testing. Applied Optics, 2020, roč. 59, č. 17, s. E89-E96. ISSN 1559-128X.
Issue Date: 2020
Publisher: Optical Society of America
Document type: článek
URI: 2-s2.0-85086499174
ISSN: 1559-128X
Keywords: termografie;termografické testování;termografická inspekce;flash-pulzní termografie
Keywords in different language: thermography;thermographic testing;thermographic inspection;flash-pulse thermography
Abstract: článek se zabývá flash-pulzní termografií - metody pro termografické testování. Je popsán experimentální výzkum metody "time power transformation" pro vyhodnocení výsledků flash-pulzní termografie. Je popsán proces měření a vyhodnocení, na příkladech jsou provedeny vyhodnocení různými metodami a je ukázáno porovnání výsledků. Na příkladech jsou prezentovány výhody metody time power transformation.
Abstract in different language: The paper deals with flash-pulse thermography, which is one of the most used thermographic inspection methods. The method is based on flash excitation of an inspected object and an analysis of its thermal response recorded by an infrared camera. This paper deals with a time-power transformation method (P-function) for an evaluation of the flash-pulse thermography measurement. The method is based on a transformation of the measured thermalresponse using a power function of time. An adaptation of the method is introduced, and an experimental investigation of the method is presented. The method and the evaluation procedure are described. A flash-pulse inspection of an experimental sample is performed, and the results of the inspection obtained by the P-function method and by a fast Fourier transform evaluation are compared using a contrast-to-noise ratio ranking. Advantages of the P-function method resulting from its numerical outputs for an estimation of the depth of defects are described. An influence of noise reduction and data preprocessing is discussed
Rights: Plný text není přístupný.
© Optical Society of America
Appears in Collections:Články / Articles (CT3)

Please use this identifier to cite or link to this item: http://hdl.handle.net/11025/39574

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