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Failure analysis of gas turbine burner tips

Pelaseyed, S. S ; Sharif University of Technology | 2019

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  1. Type of Document: Article
  2. DOI: 10.1016/j.engfailanal.2019.01.078
  3. Publisher: Elsevier Ltd , 2019
  4. Abstract:
  5. In this study, the causes of failure in gas turbine burner tips were investigated. For this purpose, two burner tips used in a petrochemical company with different failure evidence as well as service times were inspected. These parts showed signs of deterioration such as multiple cracks, corrosion, and wear following 4000 h and 8000 h operations. The examinations included chemical composition analysis using optical emission spectroscopy (OES), stereo-, optical-, and scanning electron microscopy studies, and macro/micro-hardness measurements. These investigations revealed high thermal stresses to be the main failure cause of the burner tips. Moreover, due to flame inclination, a local increase in the temperature in some parts occurred. So, hot oxidation was a further reason for the fracture of these burner tips. Last but not least, improper jointing processes facilitated the failure in the studied components. © 2019
  6. Keywords:
  7. Failure ; Gas turbine burner ; Hot oxidation ; Improper jointing ; Thermal stresses ; Chemical analysis ; Computer system recovery ; Corrosion ; Deterioration ; Failure (mechanical) ; Fuel burners ; Optical emission spectroscopy ; Scanning electron microscopy ; Thermal stress ; Burner tip ; Chemical composition analysis ; Gas turbine burners ; Multiple crack ; Optical emission spectroscopies (OES) ; Petrochemical company ; Service time ; Gas turbines
  8. Source: Engineering Failure Analysis ; Volume 99 , 2019 , Pages 7-17 ; 13506307 (ISSN)
  9. URL: https://www.sciencedirect.com/science/article/pii/S1350630718313475