Scanning inductive pulse phase thermography with changing scanning speed for non-destructive testing
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In: Quantitative InfraRed Thermography Journal, Vol. 21.2024, No. 3, 02.02.2023, p. 156-171.
Research output: Contribution to journal › Article › Research › peer-review
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TY - JOUR
T1 - Scanning inductive pulse phase thermography with changing scanning speed for non-destructive testing
AU - Tuschl, Christoph
AU - Oswald-Tranta, Beata
AU - Agathocleous, Timotheos
AU - Eck, Sven
N1 - Publisher Copyright: © 2023 The Author(s). Published by Informa UK Limited, trading as Taylor & Francis Group.
PY - 2023/2/2
Y1 - 2023/2/2
N2 - This work aims at non-destructive detection of surface and subsur-face defects in metallic specimens (e.g. railway track components) via pulsed inductive thermography in a moving setup. A new approach for scanning with changing speed has been developed to enable manual scanning of components in track. A steel speci-men is heated with an inductor, and the surface temperature, including its variation over time, is recorded with an infrared cam-era. The infrared sequence is evaluated by Fourier transform to phase image, in order to increase the image quality. The proposed method uses a referencing object with AprilTags visible in each frame, allowing an adjustment by image registration. Changes in velocity during the scanning process are possible, as demonstrated by a manually performed scan of the specimen and the correspond-ing evaluation. Results obtained with different infrared cameras and scanning speeds were condensed into an estimation of the max-imum scanning speed for a given camera specification.
AB - This work aims at non-destructive detection of surface and subsur-face defects in metallic specimens (e.g. railway track components) via pulsed inductive thermography in a moving setup. A new approach for scanning with changing speed has been developed to enable manual scanning of components in track. A steel speci-men is heated with an inductor, and the surface temperature, including its variation over time, is recorded with an infrared cam-era. The infrared sequence is evaluated by Fourier transform to phase image, in order to increase the image quality. The proposed method uses a referencing object with AprilTags visible in each frame, allowing an adjustment by image registration. Changes in velocity during the scanning process are possible, as demonstrated by a manually performed scan of the specimen and the correspond-ing evaluation. Results obtained with different infrared cameras and scanning speeds were condensed into an estimation of the max-imum scanning speed for a given camera specification.
KW - inductive thermography
KW - image registration
KW - scanning
KW - defect detection
KW - rolling contact fatigue
KW - Inductive thermography
KW - image registration
KW - scanning
KW - defect detection
KW - Rolling contact fatigue
UR - http://www.scopus.com/inward/record.url?scp=85147567141&partnerID=8YFLogxK
U2 - 10.1080/17686733.2023.2170159
DO - 10.1080/17686733.2023.2170159
M3 - Article
VL - 21.2024
SP - 156
EP - 171
JO - Quantitative InfraRed Thermography Journal
JF - Quantitative InfraRed Thermography Journal
SN - 1768-6733
IS - 3
ER -
