An exemplary method of indicating a condition of grout within a post-tensioned tendon involves positioning a magnet and a metallic sensing plate in close proximity to an outer surface of the post-tensioned tendon; rotating the magnet and the metallic sensing plate around the outer surface of the post-tensioned tendon; measuring an amount of magnetic forces applied to the magnet during rotation of the magnet around the post-tensioned tendon; measuring an impedance between the metallic sensing plate and metallic strands within the post-tensioned tendon during rotation of the metallic sensing plate around the post-tensioned tendon; and generating an image of a cross-section of the post-tensioned tendon indicating one or more grout conditions in spatial proximity to the metallic strands within the post-tensioned tendon based on measurement data using the magnet and the metallic sensing plate.

An exemplary method of indicating a condition of grout within a post-tensioned tendon involves positioning a magnet and a metallic sensing plate in close proximity to an outer surface of the post-tensioned tendon; rotating the magnet and the metallic sensing plate around the outer surface of the post-tensioned tendon; measuring an amount of magnetic forces applied to the magnet during rotation of the magnet around the post-tensioned tendon; measuring an impedance between the metallic sensing plate and metallic strands within the post-tensioned tendon during rotation of the metallic sensing plate around the post-tensioned tendon; and generating an image of a cross-section of the post-tensioned tendon indicating one or more grout conditions in spatial proximity to the metallic strands within the post-tensioned tendon based on measurement data using the magnet and the metallic sensing plate.

A rope tester to ascertain the condition of a wire rope in advance without increasing workload, Including a magnetization detector having a magnetizer for generating a magnetic force, and a detector for detecting a change in magnetism produced in a wire rope magnetized by the magnetic force generated by the magnetizer; a digital camera, which is provided a predetermined distance away from the magnetization detector along the traveling direction of the wire rope, for imaging the wire rope; and a controller, which is connected to the magnetization detector and to the digital camera, for detecting the location of a defect in the wire rope based on a change in magnetism detected by the magnetization detector, and outputting a drive signal that actuates the digital camera at a timing at which the defect location arrives at the location at which the digital camera is installed.

A rope tester to ascertain the condition of a wire rope in advance without increasing workload, Including a magnetization detector having a magnetizer for generating a magnetic force, and a detector for detecting a change in magnetism produced in a wire rope magnetized by the magnetic force generated by the magnetizer; a digital camera, which is provided a predetermined distance away from the magnetization detector along the traveling direction of the wire rope, for imaging the wire rope; and a controller, which is connected to the magnetization detector and to the digital camera, for detecting the location of a defect in the wire rope based on a change in magnetism detected by the magnetization detector, and outputting a drive signal that actuates the digital camera at a timing at which the defect location arrives at the location at which the digital camera is installed.

Provided is a metal property measurement system and method. Impedance tomography can be performed by means of magnetic field signals reflected from a metal by applying various frequencies to the metal component, and crack or heat treatment defect inspection, classification, correction inspection, and the like for the component can be performed by means of magnetic resonance, without having to strike the component, by using a magnetic resonance sensor for measuring impedance by generating magnetic resonance by applying multi-frequency currents.

Provided is a metal property measurement system and method. Impedance tomography can be performed by means of magnetic field signals reflected from a metal by applying various frequencies to the metal component, and crack or heat treatment defect inspection, classification, correction inspection, and the like for the component can be performed by means of magnetic resonance, without having to strike the component, by using a magnetic resonance sensor for measuring impedance by generating magnetic resonance by applying multi-frequency currents.

A sensor includes a flexible cable arranged to provide a plurality of independent electrical coils and a connector. Each of the plurality of independent electrical coils extend from a first end to a second end and is configured to be wrapped at least partially around a surface of a structure to be tested. The connector is electrically coupled to the first end of at least one of the plurality of independent electrical coils. The plurality of independent electrical coils is configured such that current will flow in a common direction between the first ends and the second ends within each said independent coil. Systems and methods also are disclosed.

A sensor includes a flexible cable arranged to provide a plurality of independent electrical coils and a connector. Each of the plurality of independent electrical coils extend from a first end to a second end and is configured to be wrapped at least partially around a surface of a structure to be tested. The connector is electrically coupled to the first end of at least one of the plurality of independent electrical coils. The plurality of independent electrical coils is configured such that current will flow in a common direction between the first ends and the second ends within each said independent coil. Systems and methods also are disclosed.

A system includes a scanner body, a sensor package, a magnet, an actuator mechanism, and a retention mechanism. The sensor package includes a ferromagnetic strip and a flexible coil configured to at least one of transmit and detect a guided wave. The magnet is for applying a biasing magnetic field to the ferromagnetic strip. The actuator mechanism is configured to provide a mechanical pressure coupling between the magnetostrictive strip and a structure, and the retention mechanism is configured to counteract a force applied by the actuator mechanism. A processor is in communication with the sensor package and is configured to record guided wave signals detected by the flexible sensor coil, record scanner body location data provided by a position encoder, and generate two-dimensional image data of an anomaly in the structure based on the guided wave signals and location data. Methods of use and operation also are disclosed.

A system includes a scanner body, a sensor package, a magnet, an actuator mechanism, and a retention mechanism. The sensor package includes a ferromagnetic strip and a flexible coil configured to at least one of transmit and detect a guided wave. The magnet is for applying a biasing magnetic field to the ferromagnetic strip. The actuator mechanism is configured to provide a mechanical pressure coupling between the magnetostrictive strip and a structure, and the retention mechanism is configured to counteract a force applied by the actuator mechanism. A processor is in communication with the sensor package and is configured to record guided wave signals detected by the flexible sensor coil, record scanner body location data provided by a position encoder, and generate two-dimensional image data of an anomaly in the structure based on the guided wave signals and location data. Methods of use and operation also are disclosed.