The present invention relates to a method for manufacturing a wind turbine blade part. The method comprises providing one or more wind turbine blade components including a wind turbine blade component comprising a fibre material element, an electrically conductive element, a magnetic field generator for generating an Eddy current in the electrically conductive element; arranging the electrically conductive element, the magnetic field generator, and the fibre material element such that at least a part of the fibre material element is positioned between the electrically conductive element and the magnetic field generator; generating an Eddy current in the electrically conductive element using the magnetic field generator; generating, using a magnetic sensor, a signal representing a magnetic field induced by the generated Eddy current, and forming the wind turbine blade part by assembling the wind turbine blade components.

Systems and methods are provided for analyzing magnetic hysteresis of anisotropic magnetic materials. Magnetic hysteresis loops associated with a local coordinate of a coordinated system based on a magnetic field successively applied to each principal axis with an isotropic vector play model are determined. A relaxation factor associated with the convergence behaviors of estimated solution points is applied along with a correction, either a magnetic field correction or a flux density correction, to determine target points on magnetic hysteresis loops. An error between magnetic hysteresis loops and the estimated solution points is determined. The iteration process continues up to a preset number of iterations with alternating correction schemes based on the determined error.

A method and system for estimating a pipe property for a plurality of nested pipes. The method may comprise disposing an electromagnetic logging tool in a wellbore. The electromagnetic logging tool may comprise a transmitter disposed on the electromagnetic logging tool and a receiver disposed on the electromagnetic logging tool. The method may further comprise transmitting an electromagnetic field from the transmitter into a pipe string to energize the pipe string with the electromagnetic field thereby producing an eddy current that emanates from the pipe string, measuring the eddy current in the pipe string with the receiver on at least one channel to obtain a plurality of measurements, forming a log from the plurality of measurements, zoning the log into a plurality of zones based at least in part on a well plan, and extracting a representative signal for each zone of the plurality of zones.

Systems and methods for non-invasively determining a water content, a solute content, and a thickness of plant tissue are disclosed. A system includes a sensing device having a first piece and a second piece, where the first piece and the second piece are coupled together to form a clip. The system further includes a capacitive tissue sensor including a capacitor. The capacitor includes a plurality of coplanar conductive plates. The first piece and the second piece are biased in a closed position to provide a gripping force around the plant tissue such that at least a portion of the plant tissue contacts the plurality of coplanar conductive plates.

Apparatus and methods can be implemented to monitor the condition of the production and intermediate casing strings in oil and gas field operations. A series of measurements can be made in a multi-pipe structure and received responses can be operated on by employing a mapping optimization procedure in which a surrogate model is updated. Estimates of one or more properties of the pipes of the multi-pipe structure can be generated using coefficients of the updated surrogate model. Additional apparatus, systems, and methods are disclosed.

Systems and methods for reducing effects of pipe couplings in electromagnetic log data. A method for corrosion detection comprises disposing an electromagnetic logging tool within a plurality of concentric pipes in a wellbore; obtaining electromagnetic log data along the concentric pipes; and identifying a location of at least one pipe coupling on at least one of the concentric pipes; and processing the electromagnetic log data to determine one or more attribute of the concentric pipes as a function of depth, wherein the processing uses the location of at least one pipe coupling to account for effect of the at least one pipe coupling on the electromagnetic log data.

A shaft furnace, in particular a blast furnace, includes a metal jacket defining the furnace outer wall and a protective layer protecting the inner surface of the outer wall. At least one condition monitoring probe is arranged inside within the protective layer to monitor the latter. The condition monitoring probe is connected to a wireless module arranged outside the outer wall to transmit condition monitoring data. The wireless module is located inside a casing mounted to the outer surface of the metal jacket. The condition monitoring probe includes one or more conductive loops positioned at predetermined depths below the front face of the cooling plate body, or of the refractory lining, so that wear of the body, resp. refractory, can be detected by a change of an electrical characteristic of the loop(s) due to abrasion.

A method and system for determining properties of a pipe string using multi-channel induction measurements. The method may comprise disposing a multi-channel induction tool in a cased hole, obtaining a multi-channel measurement, forming a log from the multi-channel measurement, extracting at least one abnormality that corresponds to known metal thickness, performing a search to find a set of pipe material properties that minimize a mismatch between the abnormality and a simulated response, and inverting the log to estimate the set of pipe material properties at one or more depth points using the set of pipe material properties. The system may comprise a multi-channel induction tool. The multi-channel induction tool may comprise at least one transmitter, at least one receiver, and an information handling system.

An apparatus for determining the thickness of media is provided and includes a ferrous plate, a solenoid mounted perpendicular to the ferrous plate, and a magnet at the end of the solenoid piston. The solenoid piston ranges from a retract position to a down position where the magnet presses on media fed in the gap between the solenoid piston and the ferrous plate. A current source connected to the solenoid moves the piston to the retract position when the current source is energized. A detector is provided to determine when the solenoid piston is in the retract position. A programmable device controls the current source and a time measurement device. The programmable device simultaneously starts the time measurement device and increases current to the solenoid, thereby retracting the piston and timing the retraction.

An in-pipe inspection or maintenance apparatus comprises: a single rotational and radial deployment mechanism to both rotationally deploy a probe or tool about an inner circumference of a pipe with respect to the axis of the pipe and radially deploy the probe or tool to first and second target points on the inner circumference; and a single actuator to automatically actuate the rotational and radial deployment mechanism to perform both the rotational and radial deployments of the probe or tool. The rotational and radial deployment mechanism is further configured to: rotate the probe or tool and radially extend the probe or tool to the first target point in response to the single actuator actuating the rotational and radial deployment mechanism; and rotate the probe or tool from the first target point to the second target point in response to the single actuator further actuating the rotational and radial deployment mechanism.