Present Status of Investigation of Foreign Object Damage to Blade in Aeroengine

Abstract

Foreign object damage(FOD)is one of the damage forms of blades in aeroengine.The present status of investigation of FOD to blades in aeroengine is presented in the paper.The damage of blade by bird impacting is a damage due to soft object impacting.The three aspects of theory,experiment and computation for blade by bird impacting are introduced in detail.The damage of blade by ice impacting is a damage due to soft or hard object impacting.There is a few papers on the damage of blade due to ice impact.The brief introduction on the ice damage of blades is given in the paper.The hard damages of blade consist of metalwork,stone and ice damages.The various aspects of the hard damage of blade,that is to say,the form of hard damage of blade,the fatigue strength of blade by hard object damage,crack emerging and growth in blade by hard object damage,are presented in detail.At last the directions of investigation of blade by FOD at home are put forward.