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.

A readout circuit for an electromagnetic inspection system for nondestructive testing of a test object is disclosed. The inspection system includes a plurality of sensors for sensing an electromagnetic response from the test object and generating therefrom a plurality of response signals. The readout circuit can include a plurality of anti-aliasing filters, each configured to receive the response signal from one of the sensors and bandlimit the response signal to produce one of a plurality of bandlimited signals. The readout circuit can also include a time-division multiplexer configured to multiplex the bandlimited signals into a time-division multiplexed (TDM) signal including a sequence of frames outputted at a TDM frame rate, each frame including a plurality of time slots, each time slot assigned to one of the bandlimited signals, wherein the anti-aliasing filters are configured to operate based on the TDM frame rate to attenuate aliasing artifacts in the TDM signal.

Reconfigurable electromagnetic pipe inspection tools are designed and assembled using optimized parameters determined using modeling. The reconfigurable tools include multiple modules connected to one another in a stackable fashion guided by optimized tool parameters customized based on well diagrams.

Reconfigurable electromagnetic pipe inspection tools are designed and assembled using optimized parameters determined using modeling. The reconfigurable tools include multiple modules connected to one another in a stackable fashion guided by optimized tool parameters customized based on well diagrams.

A probe including a plurality of links connected together in series, wherein the plurality of links create a flexible compartment containing at least a first and second exciter means and at least one pair of detector means, wherein the exciter means are driven by an alternating current to produce an alternating magnetic field, and the detector means are configured to detect the magnetic field of an induced eddy current caused by the exciter means magnetic field.

A probe including a plurality of links connected together in series, wherein the plurality of links create a flexible compartment containing at least a first and second exciter means and at least one pair of detector means, wherein the exciter means are driven by an alternating current to produce an alternating magnetic field, and the detector means are configured to detect the magnetic field of an induced eddy current caused by the exciter means magnetic field.

The device for the impedance-based probing of materials described herein comprises a two-dimensional array of coils (1) and a measurement unit (4) adapted to determine, for each coil (1), a parameter indicative of its impedance. A pulse generator (3) is able to generate current pulses in each coil (1). The circuitry drives and senses the coil array through row and column lines (rp1 . . . rpN1, cp1 . . . cpN2, c21 . . . csN2) in order to minimize the number of required components. The device can, in particular, be used for probing concrete.

A shoe for analyzing a component is provided. The shoe includes a housing, a NDT probe disposed on a side of the housing, and a shoe interface. The shoe interface is disposed at the side of the housing and contacts the component during the analyzing of the component. The shoe interface separates the NDT probe from the component during the analyzing of the component and moves along the component during the analyzing of the component. The shoe also includes first and second wear indicators. The first wear indicator indicates that the shoe interface is usable during the analyzing of the component. The second wear indicator indicates that the shoe interface should be replaced. Both of the wear indicators are configured similar to the shoe interface and move along the component while the shoe analyzes the component.

A probe capable of inducing a rotating magnetic field to excite a conductive tube includes an array of magnetic field sensors to detect and characterize defects in the tube. The probe includes a circumferential coil assembly and an axial coil assembly both positioned to induce eddy currents in the conductive tube, such that the magnetic field sensors can detect defects in the tube, including defects extending circumferentially, axially, or any combination thereof, whether at the surface or sub-surface of the tube inner and outer walls.

A device and method of eddy current based nondestructive testing of tubular structures made of electrically conductive materials is disclosed. The device includes a plurality of excitation electromagnets having an axis of symmetry and magnetoresistive sensors having an easy axis for magnetic field sensing; wherein the magnetoresistive sensors are arranged in a circular array on a single plane with the easy axis aligned radially with respect to the circular pattern and wherein the electromagnets are arranged in a circular pattern on both sides of the plane with their axes of symmetry being arranged parallel to the plane and orthogonal to radii of the circular pattern on which the electromagnets are placed.