Systems and methods are provided for implementing and utilizing magnetic inspection machines with true gauss magnetic measurements.

Systems and methods are provided for implementing and utilizing magnetic inspection machines with true gauss magnetic measurements.

A riblet film for reducing the air resistance of aircraft, comprising a suspension with magnetic particles enclosed therein. Depending on the pattern of a magnetic field acting on the riblet film, the magnetic field that is acting can be made visible, at least in certain regions, by changing the orientation of the magnetic particles. The riblet film allows an inspection of the aircraft structure located under the riblet film through the riblet film.

A riblet film for reducing the air resistance of aircraft, comprising a suspension with magnetic particles enclosed therein. Depending on the pattern of a magnetic field acting on the riblet film, the magnetic field that is acting can be made visible, at least in certain regions, by changing the orientation of the magnetic particles. The riblet film allows an inspection of the aircraft structure located under the riblet film through the riblet film.

A computer-implemented method is described for detecting, identifying and locating an object feature in a ferromagnetic object. At least one hardware processor executes program instructions to: define a planned scan trajectory for scanning the ferromagnetic object with a sensor array comprising a plurality of magnetometer sensors, measure magnetic fields of the ferromagnetic object with the sensor array along an actual scan trajectory at locations adjacent to the ferromagnetic material to produce object scanning data representing magnetic characteristics of the ferromagnetic object along the actual scan trajectory. The actual scan trajectory includes deviation motion of the scanning array from the planned scan trajectory. The deviation motion is then compensated for to identify and locate the object feature in the ferromagnetic object. The compensation includes adjusting the object scanning data for the deviation motion and/or using a feature model that reflects the deviation motion.

A computer-implemented method is described for detecting, identifying and locating an object feature in a ferromagnetic object. At least one hardware processor executes program instructions to: define a planned scan trajectory for scanning the ferromagnetic object with a sensor array comprising a plurality of magnetometer sensors, measure magnetic fields of the ferromagnetic object with the sensor array along an actual scan trajectory at locations adjacent to the ferromagnetic material to produce object scanning data representing magnetic characteristics of the ferromagnetic object along the actual scan trajectory. The actual scan trajectory includes deviation motion of the scanning array from the planned scan trajectory. The deviation motion is then compensated for to identify and locate the object feature in the ferromagnetic object. The compensation includes adjusting the object scanning data for the deviation motion and/or using a feature model that reflects the deviation motion.

A method for identifying an artifacts disposed on concentric pipes may comprise disposing an electromagnetic logging tool into a first wellbore, broadcasting an electromagnetic field from a transmitter disposed on the electromagnetic logging tool, energizing a casing with the electromagnetic field, and recording a secondary electromagnetic field from the casing at a plurality of depths and at a plurality of frequencies. The method may further comprise picking a first plurality of artifacts in the first signal, constructing a target value matrix from the first plurality of artifacts, producing a first input matrix from the first signal and a first well plan, and constructing a predictor from the first input matrix and the target value matrix. Additionally, disposing the electromagnetic logging tool into a second wellbore and producing a second plurality of artifacts from the predictor and the second input matrix.

A method for identifying an artifacts disposed on concentric pipes may comprise disposing an electromagnetic logging tool into a first wellbore, broadcasting an electromagnetic field from a transmitter disposed on the electromagnetic logging tool, energizing a casing with the electromagnetic field, and recording a secondary electromagnetic field from the casing at a plurality of depths and at a plurality of frequencies. The method may further comprise picking a first plurality of artifacts in the first signal, constructing a target value matrix from the first plurality of artifacts, producing a first input matrix from the first signal and a first well plan, and constructing a predictor from the first input matrix and the target value matrix. Additionally, disposing the electromagnetic logging tool into a second wellbore and producing a second plurality of artifacts from the predictor and the second input matrix.

A method of making a fiber reinforced composite material having a two-part liquid solution forming magnetic nanoparticles. The method includes the steps of preparing a fiber reinforced composite having dispersed fibers and a polymer matrix and having a plurality of vascular channels therethrough. A first liquid solution is incorporated in at least one of the vascular channels and a second liquid solution is incorporated in at least one other of the vascular channels. When the liquid solutions are joined together because of damage or cracking to the composite, the liquids form a ferrous magnetic material. Non-destructive evaluation of internal damage to the fiber reinforced composite material may be accomplished by magnetic field disturbance detection, thermal detection, or visual detection.

The present application discloses an apparatus and a method for detecting flaws in a wall of a metallic pipe containing a fluid. The apparatus includes a collapsible supporting structure for supporting the apparatus, wherein an axis of the apparatus is at or near an axis of the metallic pipe; a plurality of sensors for sensing magnetic field signal from the metallic pipe, the plurality of sensors configured to be distributed around an inner circumference of the pipe without contacting a surface of an inner wall of the metallic pipe; a processing module for receiving sensed data from the plurality of the sensors; and one or more battery module for electrically powering the plurality of sensors and the processing module.