Automated systems for acquiring sequential data on the conditionof many transportation facilities generate a huge volume of data tobe processed. Aggregation of automatically collected and processed data is required in order to make the information appropriate and useful for maintenance management. The problem of data aggregation andtechniques that can be adopted to divide linear structures into homogeneous segments for modeling deterioration and assigning maintenance actions are described. The objective is to use the disaggregate sequential condition data from a data acquisition system to determinepoints of transition from one homogeneous segment to another. The theory and general methodologies are explained in the context of transportation facilities, and an application to maintenance-based aggregation of rail surface condition data is described.
Abstract