Next Article in Journal
Optimization of the Energy Storage of Series-Hybrid Propelled Aircraft by Means of Integer Differential Evolution
Previous Article in Journal
Accurate 2-D Modelling of Transonic Compressor Cascade Aerodynamics
Previous Article in Special Issue
Innovating the Maintenance Repair and Overhaul Phase through Digitalization
Article Menu
Issue 5 (May) cover image

Export Article

Open AccessArticle

Taxonomy of Gas Turbine Blade Defects

Department of Mechanical Engineering, University of Canterbury, Christchurch 8041, New Zealand
Author to whom correspondence should be addressed.
Aerospace 2019, 6(5), 58;
Received: 4 April 2019 / Revised: 27 April 2019 / Accepted: 17 May 2019 / Published: 21 May 2019
(This article belongs to the Special Issue Managing Data and Information of Aerospace Product Lifecycle)
PDF [18443 KB, uploaded 28 May 2019]
  |     |  


Context—The maintenance of aero engines is intricate, time-consuming, costly and has significant functional and safety implications. Engine blades and vanes are the most rejected parts during engine maintenance. Consequently, there is an ongoing need for more effective and efficient inspection processes. Purpose—This paper defines engine blade defects, assigns root-causes, shows causal links and cascade effects and provides a taxonomy system. Approach—Defect types were identified from the literature and maintenance manuals, categorisations were devised and an ontology was created. Results—Defect was categorised into Surface Damage, Wear, Material Separation and Material Deformation. A second categorisation identified potential causes of Impact, Environmental causes, Operational causes, Poor maintenance, Poor manufacturing and Fatigue. These two categorisations were integrated with an ontology. Originality—The work provides a single comprehensive illustrated list of engine blade defects, and a standardised defect terminology, which currently does not exist in the aviation industry. It proposes a taxonomy for both engine blade defects and root-causes, and shows that these may be related using an ontology. View Full-Text
Keywords: aero engine; blade defects; blade failure; gas turbine; NDI; NDT; MRO; ontology; visual inspection aero engine; blade defects; blade failure; gas turbine; NDI; NDT; MRO; ontology; visual inspection

Graphical abstract

This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).

Supplementary material


Share & Cite This Article

MDPI and ACS Style

Aust, J.; Pons, D. Taxonomy of Gas Turbine Blade Defects. Aerospace 2019, 6, 58.

Show more citation formats Show less citations formats

Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Related Articles

Article Metrics

Article Access Statistics



[Return to top]
Aerospace EISSN 2226-4310 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert
Back to Top