Abstract: A method for predictive maintenance of a machine includes collecting feature data for the machine which includes a plurality of feature vectors. At least some of the feature vectors are standardized to facilitate compatibility between different vectors. At least some of the standardized feature vectors are transformed into corresponding two-dimensional feature vectors. At least some of the two-dimensional feature vectors are clustered together based on operating modes of the machine. Similar steps are performed on additional feature data collected from the machine. Recently gathered two-dimensional feature vectors are compared to previously clustered feature vectors to provide predictive maintenance information for the machine.

Abstract: A structurally tuned, vibration-based component checking system for detecting anomalies in a component of an assembly prior to the component being installed in the assembly is provided. The component checking system operates the component being tested at a speed that is different from the speed at which the component operates during normal use in the assembly, and also under a different load. To compensate for this difference in speed and load, the component checking system is structurally tuned such that a relationship exists between the modal frequencies and speed of operation of the component checking system and the modal frequencies and speed of operation of the assembly.

Abstract: A structurally tuned, vibration-based component checking system for detecting anomalies in a component of an assembly prior to the component being installed in the assembly is provided. The component checking system operates the component being tested at a speed that is different from the speed at which the component operates during normal use in the assembly, and also under a different load. To compensate for this difference in speed and load, the component checking system is structurally tuned such that a relationship exists between the modal frequencies and speed of operation of the component checking system and the modal frequencies and speed of operation of the assembly.

Abstract: A method for analyzing waviness of a surface. The method includes measuring a height of the surface, producing a set of data points indicative of a waviness profile, selecting a subset of the set of data points, calculating a waviness height of the subset, repeating the selecting, determining, and calculating steps for additional subsets until all members of the set of data points have been selected, and selecting a maximum waviness height value from the waviness heights calculated for each subset. The height of the surface may be measured over a distance longer than the length over which waviness assessment is required.

Abstract: A structurally tuned, vibration-based component checking system for detecting anomalies in a component of an assembly prior to the component being installed in the assembly is provided. The component checking system operates the component being tested at a speed that is different from the speed at which the component operates during normal use in the assembly, and also under a different load. To compensate for this difference in speed and load, the component checking system is structurally tuned such that a relationship exists between the modal frequencies and speed of operation of the component checking system and the modal frequencies and speed of operation of the assembly.

Abstract: A method for analyzing waviness of a surface. The method includes measuring a height of the surface, producing a set of data points indicative of a waviness profile, selecting a subset of the set of data points, calculating a waviness height of the subset, repeating the selecting, determining, and calculating steps for additional subsets until all members of the set of data points have been selected, and selecting a maximum waviness height value from the waviness heights calculated for each subset. The height of the surface may be measured over a distance longer than the length over which waviness assessment is required.