Brief survey on mechanical failure and preventive mechanism of turbine blades

Abstract

Failure of components is one of the serious concerns especially in case of turbines. A comprehensive review is conducted in view of failure mechanism especially of the turbine blades. Further, various tools and techniques used in the analysis and investigation of failure mechanism are delineated in the present work. A summary of prevention of failure mechanism in various categories of turbines is presented as well. Moreover, turbines especially the gas turbine, steam turbine, hydro turbines, wind turbine etc. which are extensively used in the generation of power are considered for the investigation of failure mechanism in the current review approach. Results revealed that there are various types of failures such as crack, fatigue, corrosion, erosion, material defect, thermo-mechanical failure etc. which commonly occur at turbine blades and hub. The failures in the gas turbine include the crack, corrosion, fatigue failure etc. whereas in hydro turbines erosion and fatigue occur mainly. Consequently, the present work can be referred as a guide for failure mechanism and their prevention in the turbines.