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The Strathprints institutional repository is a digital archive of University of Strathclyde research outputs. Strathprints provides access to thousands of Open Access research papers by University of Strathclyde researchers, including those from the School of Psychological Sciences & Health - but also papers by researchers based within the Faculties of Science, Engineering, Humanities & Social Sciences, and from the Strathclyde Business School.

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Reliable thermosonic inspection of aero engine turbine blades

Bolu, Gabriel and Gachagan, Anthony and Pierce, Stephen and Harvey, Gerald (2010) Reliable thermosonic inspection of aero engine turbine blades. Insight: The Journal of the British Institute of Non-Destructive Testing, 52 (9). pp. 488-493. ISSN 1354-2575

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The application of Thermosonics as a screening technique for identifying cracked aero engine turbine blades is described. Thermosonics is a rapid and potentially, a cost-saving non-destructive testing (NDT) technique for rejecting cracked turbine blades as part of the regular inspection cycle. However, there remains a question over the reliability of the Thermosonic approach. The aim of this work is to assess the reliability of Thermosonics as a screening method for cracks in turbine blades. This work involved the use of 60 turbine blades with known cracks. First, a repeatability study was conducted on a subset of the 60 blades to establish a robust and repeatable experimental procedure, after which all 60 blades were inspected. Results from this work showed the experimental process to be robust and also that the known cracks in 52 out of the 60 blades were detected.