Abstract:
An EMI shoe body having generally arcuate shape, a non-working major face, a working major face, a trough configured to hold one or more sensors embedded in a potting material, and at least one through hole for mechanical connection to an EMI apparatus. The generally arcuate body includes at least one non-central through hole configured to position respective externally threaded cylindrically-shaped set screws, each of the at least one non-central through holes configured to have a wear-resistant friction member movably secured therein and positioned such that a distal portion of each friction member protrudes away from the major working face an initial distance (d1) and configured to wear down over time to a generally arcuate surface that is a distance d2 from the major working face, where d2
Abstract:
A metal structure evaluator for rolled steel sheets includes: a magnetic property measuring unit configured to measure a magnetic property of an evaluation target point in at least two or more different magnetization directions by performing, in the at least two or more different magnetization directions, processing of: applying a magnetic field on a surface of a rolled steel sheet in one direction; and measuring a magnetic property of the evaluation target point on the surface of the rolled steel sheet; and a determination unit configured to determine a metal structure of the evaluation target point based on the magnetic property measured by the magnetic property measuring unit.
Abstract:
Apparatus and method for detecting flaws in a wall of a metallic pipe containing a fluid are disclosed. The apparatus includes: a plurality of sensors distributed around an inner circumference of the metallic pipe, for sensing magnetic field signals from the metallic pipe; a collapsible supporting structure, including a plurality of supporting petals, at a front side of the plurality of sensors for supporting the apparatus; a sail mounted on and extended from bottom ends of the plurality of supporting petals, when the plurality of supporting petals are in an extended state, the sail is expanded to form a shape capable for containing the fluid; a processing module receiving sensed data from the plurality of sensors; and one or more battery modules for electrically powering the plurality of sensors and the processing module.
Abstract:
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.
Abstract:
A wire rope inspection device (100) includes a controller 21 configured or programmed to detect a state of a wire rope (W) based on a difference at substantially a same position between a first detection signal acquired by a differential coil (10) in a first measurement and a second detection signal acquired by the differential coil in a second measurement after the first measurement.
Abstract:
Embodiments relate to a system and method for detecting and remediating selective seam weld corrosion in conduits such as steel pipes that transport oil and gas products. In particular, a probe detects magnetic flux leakage in at least two orientations. Anomalies in the conduit are then identified and assessed for selective seam weld corrosion based on factors that include the magnetic flux leakage detection and the depth of the anomalies. For certain categories of assessed anomalies, the corresponding portions of the conduit are selectively remediated in accordance with these factors.
Abstract:
Embodiments related to a system and method for detecting and remediating selective seam weld corrosion in conduits such as steel pipes that transport oil and gas products. In particular, a probe detects magnetic flux leakage in at least two orientations. Anomalies in the conduit are then identified and assessed for selective seam weld corrosion based on factors that include the magnetic flux leakage detection and the depth of the anomalies. For certain categories of assessed anomalies, the corresponding portions of the conduit are selectively remediated in accordance with these factors.
Abstract:
A device for checking bent tubes by means of a probe, such as a pneumatically propelled eddy-current probe. The device comprises a sealing-tight enclosure adapted to communicate with the tube to be checked via a connecting tube. The introduction pressure of the probe is produced by a pneumatic circuit. The probe comprises a checking head and a cable having floaters and is wound on a coil driven by a torque motor. The introduction speed of the probe is controlled by passing it over a drive pulley, to which it is permanently applied by a strap tensioned by a spring, the pulley being mounted on the shaft of a constant-speed motor. Application to the checking of the tubes of heat exchangers, condensers and steam generators, more particularly of nuclear reacters.
Abstract:
A probe 100 includes exciter units 102 arranged in an array and detector units 104 and 106, also arranged in arrays, with the arrays positioned proximal to and in the shape of the exterior circumference of an individual boiler tube 108. The detector units 104 are “absolute” coil detectors which are used to detect and quantify general wall loss, for example, resulting from steam impingement erosion. The detectors 106 are differential, axial pairs which are used for detecting pits in the boiler tubers. The exciter units and detector units are mounted in a stainless steel housing 110 of the probe. The housing 110 is shaped to closely match the contour of the boiler tube 108. The probe can be moved along the boiler tubes by hand to inspect the flame side of boiler tubes, one at a time. Wheels 112 are provided to roll the probe along the boiler tubes.