Birgit Fehrmann

Papers

Total Citations

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About

Birgit Fehrmann is a specialist in gas turbine (GT) component repair and non-destructive evaluation, with a focus on extending the service life of advanced turbine parts. Her key research areas include thermal barrier coating analysis, laser-based material processing, and in-service temperature diagnostics. Fehrmann’s major contributions center on solving critical challenges in GT maintenance: she developed an innovative non-destructive method for estimating in-service metal surface temperatures of coated GT airfoils, enabling more accurate part lifetime analysis without destructive metallography. She also pioneered an automated laser re-opening technique for film cooling holes, addressing a major bottleneck in commercial GT repair—where protective coatings consumed during service intervals plug critical cooling pathways. Though her most-cited works (each with 3 citations) reflect a niche but impactful focus, their practical significance is underscored by the direct industrial relevance to power generation and aviation. Fehrmann’s work bridges the gap between material science and field engineering, offering tangible solutions that improve reliability and reduce repair costs for high-value turbine components. Her research is particularly valuable for engineers and scientists working on hot-section component life management and advanced repair technologies.