Robot-assisted infrared thermography for surface breaking crack detection on complex shaped components

N. W. Pech-May; P. Hirsch; J. Lecompagnon; M. Ziegler

doi:10.1117/12.2666757

22 May 2023 Robot-assisted infrared thermography for surface breaking crack detection on complex shaped components

N. W. Pech-May, P. Hirsch, J. Lecompagnon, M. Ziegler

Proceedings Volume 12327, SPIE Future Sensing Technologies 2023; 1232715 (2023) https://doi.org/10.1117/12.2666757
Event: SPIE Future Sensing Technologies, 2023, Yokohama, Japan

Abstract

Infrared thermography using a focused (spot or line) beam has proved to be effective for detection of surface breaking cracks on planar samples. In this work, we use the same principle, but applied to complex shaped components, like a rail section, a gear, and a gas turbine blade. We use a six-axis robot arm to move the sample in front of our thermographic setup. Several scanning paths and thermographic parameters are explored: scanning speed, density of points in each scanning slice, laser power and camera frame-rate. Additionally, we explore semi-automatic evaluation algorithms for crack detection, as well as 2D-to-3D registration of the found indications.

Conference Presentation

Citation Download Citation

N. W. Pech-May, P. Hirsch, J. Lecompagnon, and M. Ziegler "Robot-assisted infrared thermography for surface breaking crack detection on complex shaped components", Proc. SPIE 12327, SPIE Future Sensing Technologies 2023, 1232715 (22 May 2023); https://doi.org/10.1117/12.2666757

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