Abstract: A method to account for foreign material in a zone includes the steps of training an object detection model to identify an object using a set of database images of objects on a computer utilizing AI algorithms to create a trained object detection model, receiving an object in an area within a field of view of a camera, distinguishing whether the object is entering the foreign material zone or exiting the foreign material zone, and identifying the object using the trained object detection model. In response to the distinguishing step, the method includes storing the image in a log representing the objects in the foreign material exclusion zone in response to the object being identified by the AI-based trained object detection model when the object is entering he foreign material zone or removing the image from the log when the object is exiting the foreign material zone.

Abstract: In a general methodology for insulation defect identification in a generator core, a Chattock coil is used to measure magnetic potential difference between teeth. Physical knowledge and empirical knowledge is combined in a model to predict insulation damage location and severity. Measurements are taken at multiple excitation frequencies to solve for multiple characteristics of the defect.

Abstract: Steam turbine engine cross over pipe or other pipe internal inspection is performed with a selectively steerable pipe inspection crawler apparatus with a chassis having a longitudinal axis, with front and rear Mechanum wheels capable of independently-selected forward or rearward driven rotational direction, for selectively steering the apparatus within the pipe interior under control of a human-machine interface (HMI). The crawler apparatus has at least one inspection camera having a field of view, for capturing images of a pipe interior that is also under control of the HMI. Embodiments of the crawler apparatus include a selectively orientable inspection camera and/or a deployable bore scope that is selectively deployed and retracted from a descending section of the cross over pipe.

Abstract: Steam turbine engine cross over pipe or other pipe internal inspection is performed with a selectively steerable pipe inspection crawler apparatus with a chassis having a longitudinal axis, with front and rear Mechanum wheels capable of independently-selected forward or rearward driven rotational direction, for selectively steering the apparatus within the pipe interior under control of a human-machine interface (HMI). The crawler apparatus has at least one inspection camera having a field of view, for capturing images of a pipe interior that is also under control of the HMI. Embodiments of the crawler apparatus include a selectively orientable inspection camera and/or a deployable bore scope that is selectively deployed and retracted from a descending section of the cross over pipe.

Abstract: A device for removing a coating formed in a slot of a stator core. The device includes a carriage movably attached to a first guide rail assembly to enable movement of the carriage in a longitudinal direction. The device also includes a first drive screw wherein rotation of the first drive screw moves the first guide rail assembly in the longitudinal direction. In addition, the device includes a second guide rail assembly that is attached to the carriage wherein the second guide rail assembly enables movement of the carriage in a direction transverse to the longitudinal direction. Further, the device includes a second drive screw wherein rotation of the second drive screw moves the carriage in the transverse direction. The carriage includes a nozzle that moves within the slot in either or both the longitudinal or transverse directions wherein the nozzle sprays an abrasive media for removal of the coating.

Abstract: A device for removing a coating formed in a slot of a stator core. The device includes a carriage movably attached to a first guide rail assembly to enable movement of the carriage in a longitudinal direction. The device also includes a first drive screw wherein rotation of the first drive screw moves the first guide rail assembly in the longitudinal direction. In addition, the device includes a second guide rail assembly that is attached to the carriage wherein the second guide rail assembly enables movement of the carriage in a direction transverse to the longitudinal direction. Further, the device includes a second drive screw wherein rotation of the second drive screw moves the carriage in the transverse direction. The carriage includes a nozzle that moves within the slot in either or both the longitudinal or transverse directions wherein the nozzle sprays an abrasive media for removal of the coating.

Abstract: In a general methodology for insulation defect identification in a generator core, a Chattock coil is used to measure magnetic potential difference between teeth. Physical knowledge and empirical knowledge is combined in a model to predict insulation damage location and severity. Measurements are taken at multiple excitation frequencies to solve for multiple characteristics of the defect.

Abstract: An ultrasonic inspection tool (100) for inspecting the brazed joint (76) between two generator stator coils (18A and 18B) and an interconnecting copper bar (74). The inspection tool (100) is automatically serially positioned at a plurality of inspection sites on the surface of the copper bar (74). At each site an ultrasonic signal is emitted from the tool (100) and the return echo is sensed. Analysis of the return echo at each of the plurality of sites determines the characteristics of the brazed joint (76) at the site, from which a determination can be made as to the quality of the joint between coils (18A and 18B) and the copper bar (74).

Abstract: An ultrasonic inspection tool (100) for inspecting the brazed joint (76) between two generator stator coils (18A and 18B) and an interconnecting copper bar (74). The inspection tool (100) is automatically serially positioned at a plurality of inspection sites on the surface of the copper bar (74). At each site an ultrasonic signal is emitted from the tool (100) and the return echo is sensed. Analysis of the return echo at each of the plurality of sites determines the characteristics of the brazed joint (76) at the site, from which a determination can be made as to the quality of the joint between coils (18A and 18B) and the copper bar (74).