Abstract: A contactless odometer system can include a sensor array. The sensor array can include a plurality of sensing elements adjacent to a target surface and configured to receive signals based on a distance separating the sensing element from the adjacent surface and a defect present below the adjacent surface of the target. The system can also include a controller configured to receive the signals from first and second locations within the target and to generate first and second defect maps corresponding to the first and second locations. The controller can identify overlapping portions of first and second defect maps and can determine a translation distance in at least one direction. Related methods of determining a distance traveled by a contactless odometer system are also provided.

Abstract: A contactless odometer system can include a sensor array. The sensor array can include a plurality of sensing elements adjacent to a target surface and configured to receive signals based on a distance separating the sensing element from the adjacent surface and a defect present below the adjacent surface of the target. The system can also include a controller configured to receive the signals from first and second locations within the target and to generate first and second defect maps corresponding to the first and second locations. The controller can identify overlapping portions of first and second defect maps and can determine a translation distance in at least one direction. Related methods of determining a distance traveled by a contactless odometer system are also provided.

Abstract: In one embodiment, a method of discriminating defects is provided. The method can include receiving data characterizing a first portion of a magnetic field, a second portion of the magnetic field, and a speed associated with a second sensor that acquired the second portion of the magnetic field. The method can also include discriminating, using the received data, a defect in a pipe as one of internal and external. The method can further include providing data characterizing the defect as one of internal and external.

Abstract: In one embodiment, a method of discriminating defects is provided. The method can include receiving data characterizing a first portion of a magnetic field, a second portion of the magnetic field, and a speed associated with a second sensor that acquired the second portion of the magnetic field. The method can also include discriminating, using the received data, a defect in a pipe as one of internal and external. The method can further include providing data characterizing the defect as one of internal and external.