Abstract: Embodiments are disclosed for generating an intelligent change summary are described. In some embodiments, a method of generating an intelligent change summary includes obtaining a representation of a plurality of versions of a document, determining a distance score based on a comparison of a first of version of the document and a second version of the document, the distance score representing a magnitude of changes made from the first version of the document to the second version of the document, and generating a change summary of the document based on the distance score.

Abstract: A method and device for cleaning a hollow article and specifically a turbine blade assembly utilizes a cleaning solution flowed through the turbine blade assembly and a transducer that generates an ultrasonic frequency that is transmitted through the flowing cleaning solution to the internal surfaces of the turbine blade. Ultrasonic waves emitted by the transducer generate energy that is transmitted through the cleaning solution within the internal cavity and against interior surfaces of the turbine blade. Ultrasonic waves that contact the internal surfaces dislodge and remove dirt and grim.

Abstract: A gas turbine engine includes alternating rows of rotary airfoils or blades and static airfoils or vanes. The vanes are made of a base metal, such as cobalt or nickel superalloy. If a crack forms in one of the vanes, a braze alloy is applied to the crack. The braze alloy is a powdered slurry. The braze alloy includes approximately 50 to 100% of a base material and approximately 0 to 50% of a braze material. The base material of the braze alloy has the same composition as the composition of the base metal of the vane. The airfoil is then exposed to microwaves which melt the braze alloy in preference to the base metal to repair the crack in the vane.