Abstract
This study presents the metallurgical analysis results of fracture failure occurred on the turbine wheel of Jet Fuel Starter (JFS) used on F16 Military Aircraft. A lot of cracks, main material loss, metal deposit and pitting were observed on turbine wheel. When the investigable turbine wheel blade surface was examined, the cracks on blade surfaces were started from multiple points assisted by thermal fatigue. Then, the repeated loads enhanced the cracks from blade edge to center. Finally, the residual cross-section surface was completely broken off because the residual cross-section surface did not endure the overload effects overcoming on it. The imbalance malfunction took place in JFS after the turbine wheel blades were broken. In this situation, the compressor wheel rubbed to the casing, than some damages occurred on the casing surface and compressor wheel blades as a result of rubbing, and the JFS rear bearing disintegrated.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
