Research on aeroengine detection technology based on machine vision

Currently, advanced aero engines are developing towards high rotational speed, efficiency, thrust weight ration, reliability and turbine inlet temperature, which needs measuring and inspection technology of high level to support the design and manufacturing procedure. Along with the development of measurement technology and other related disciplines, as a kind of non-contact measuring method, optical measuring technology could be used to cope with so many problems which may be difficult or un-solvable for those traditional inspecting manners. Further, as a branch of the optical measuring technology, machine vision uses industrial cameras etc. to distinguish, measure and locate the target and 2D of the target to derive information, which possesses such advantages as compact structure, rich information and flexible application etc. Under this background, fruitful research has been carried out in the aspect of machine vision measuring and inspecting technology of key geometrical features of aero engine such as film cooling hole, blade-shaped hole and blade defect. Also, related special equipments have been developed to realize the efficient inspection of those key geometrical features.