Abstract: There is described an Eddy current probe for non-destructive testing, comprising: a first leg extending along a first longitudinal axis between a first proximal end and a first distal end; a second leg extending along a second longitudinal axis between a second proximal end and a second distal end; a high magnetic permeability body extending at least partially between the first and second longitudinal axes, the high magnetic permeability body being spaced apart from the first and second legs by a gap and the high magnetic permeability body and the first and second legs being each made of a high magnetic permeability material; and at least one excitation coil each secured to at least one of the first leg and the second leg.

Abstract: The invention relates to a device for examining a workpiece, wherein the device comprises a carrier; at least one transceiver, which is arranged on the carrier; and a protective device, which is designed to protect the at least one transceiver from soiling. The invention further relates to a system for examining a workpiece, comprising such a device.

Abstract: An apparatus for cleaning heat exchangers may include a cleaning lance for cleaning a plurality of bores of the heat exchanger and an examination lance for examining a plurality of bores of the heat exchanger. The apparatus may further include a first feeder configured to extend and retract the cleaning lance and a second feeder configured to extend and retract the examination lance. The apparatus may further include a controller. The controller may be configured to control the first feeder to feed the cleaning lance into a first bore, to control the cleaning lance to clean the first bore, and to control the first feeder to retract the cleaning lance from the first bore. The controller may be further configured to control the first feeder to extend the cleaning lance into a second bore, to control the cleaning lance to clean the second bore, to control the second feeder to extend the examination lance into the first bore, and to control the examination lance to examine the first bore.

Abstract: There is described an eddy current array probe for detection and depth sizing of a surface-breaking defect in a metallic material, said eddy current array probe comprising: a probe body comprising a plurality of probe elements arranged in a linear configuration, the probe elements each comprising at least one coil, the probe body being adapted to be displaced along a surface of the metallic material so that a longitudinal axis of the coil be parallel to the surface of the metallic material, the coil, when in use, being adapted to induce an eddy current within the metallic material detect the eddy current; and a set of active elements of the plurality of probe elements being adapted to be selectively operated at a plurality of time-spaced instances.

Abstract: A form-fitting eddy current array probe for inspecting helical gears is provided, the probe comprising: a leg which includes a sensor zone with a plurality of eddy current arrays; an arm attached to and normal with the leg to provide an L-shaped probe, the arm including a sensor zone with a plurality of eddy current arrays; a resilient layer underlying the sensor zones; a gel layer attached to an upper surface of the sensor zones, the gel layer including a fluid gel and an outer covering encasing the fluid gel; and an encoder distally located on the leg. A method of inspecting a girth gear set including a helical gear and a girth gear using the form-fitting eddy current array probe is also provided.

Abstract: A drone may be flown into proximity of a structure to measure one or more parameters of the structure. An electromagnet of the drone may be activated to electromagnetically attach the drone to the structure for inspection. A probe may be activated to inspect the structure by measuring one or more parameters of the structure.

Abstract: A system, apparatus, and method of quickly inspecting tubes of chemical plants is provided, where one or more tube inspection apparatuses are used to simultaneously perform electromagnetic testing (“ET”) of multiple tubes of a chemical plant by simultaneously lowering probes into separate tubes and transmitting the data to a processor. In some embodiments, the data from the probes can be transmitted in real or near-real time to a remote processor for analysis to determine whether any defects exist in the tubes and the extent of such defects.

Abstract: The present invention relates to a wet planar heating element and a method manufacturing the same. The element including: a planar heating unit including an upper waterproof film layer, a lower waterproof film layer, a planar heating layer, and an electrode layer; an external waterproof film layer; and a non-woven fabric layer. According to the present invention, it is possible to minimize leakage current due to pores of a non-woven fabric substrate and a low dielectric constant of air in air pockets, thereby solving problems that an earth leakage circuit breaker operates. Accordingly, wet construction can be performed, power consumption can be reduced, and an electrical fire risk can be remarkably lowered. In addition, it is possible to improve flexibility of the planar heating element, whereby the use of the planar heating element can be expanded and the efficiency of the construction work can be increased.

Abstract: A modular carriage for recording magnetic terrain data, notably for the non-invasive inspection of pipelines, electric cables or the like. The carriage includes an articulated chassis mounted on wheels including means for accommodating a device for recording the magnetic field coupled to sensors, a rear frame allowing the carriage to be handled by an operator, at least two positioning bars equipped with housings for securing the sensors along a first and a second axis respectively, the positioning bars forming a detection plane P substantially perpendicular to the direction of travel of the carriage.

Abstract: The present invention relates to an improved food waste dryer utilizing waste heat, which includes a main frame, a dryer drum with an access door, to be positioned in the main frame, and an agitator positioned in the dryer drum. The improved food waste dryer comprises: a waste heat supply unit, a heating jacket positioned on the outer surface of the dryer drum, with a hot-air inlet to receive the waste heat from the waste heat supply unit and a hot-air outlet to discharge the waste heat inside the dryer drum, and a condensation system positioned in the main frame, to remove moisture included in the interior air of the dryer drum to increase the drying efficiency of the food waste dryer utilizing waste heat.

Abstract: A Pulsed Eddy Current (PEC) probe for PEC testing of a ferromagnetic object covered with a ferromagnetic protective jacket, the PEC probe comprising: at least one coil for at least one of generating an inspection magnetic field and detecting an induced magnetic field; at least one permanent magnet for magnetically saturating the ferromagnetic protective jacket; and means for selectively reducing an attraction between the at least one magnet and the ferromagnetic protective jacket.

Abstract: Ambient light can cause a user to experience a loss of contrast of an object or subject under observation by the user via a microscope, particularly when the user is observing the object or subject using fluorescence microscopy. An embodiment of the present invention is an ambient light restrictor for a microscope. The ambient light restrictor defines a port to provide a user with access to oculars of the microscope. The restrictor may be freestanding and provide additional port(s) to enable physical access to the microscope or viewing region. Through use of the restrictor, ambient lights need not be turned off, in cases of indoor use, such as when dozens of microscopes are being used by many scientists in a laboratory, and, in cases of outdoor use, microscopes can be used with little to no loss of contrast of objects or subjects under observation.

Abstract: A Pulsed Eddy Current device for inspecting an object made of an electrically conductive material comprising: at least one dual-purpose coil serving a dual purpose of producing a supplied magnetic field in the object and measuring a produced magnetic field emitted by the object, a transmitter circuit driving the dual-purpose coil(s) with an electrical signal, a shut-off current circuit for the transmitter circuit for cutting-off a current in the dual-purpose coil(s) during a cut-off phase of the electrical signal, the shut-off current circuit applying a voltage inversion on the dual-purpose coil(s) and a receiver circuit for reading the produced magnetic field from the dual-purpose coil(s). A method for inspecting an object comprising supplying a voltage on at least one dual-purpose coil, cutting-off a current in the dual-purpose coil(s) by applying a voltage inversion on the dual-purpose coil(s) and receiving, at the dual-purpose coil(s), a produced magnetic field.

Abstract: Measuring distance along a wire rope, by steps that include moving the wire rope across a sensor head; counting rotations of a rotary encoder driven by the moving wire rope; detecting a first distance marker crossing the sensor head at a first position of the wire rope; detecting a second distance marker crossing the sensor head at a second position of the wire rope; and establishing calibration parameters for producing a calibrated distance measurement corresponding to any output of the rotary encoder, based at least on correlating a known distance between the first and second distance markers to a counted number of pulses of the rotary encoder between the first and second positions of the wire rope.

Abstract: Provided is a wet-use plane heater using a positive temperature coefficient (PTC) constant heater-ink polymer, wherein the wet-use plane heater has unique characteristics in that it may not only be safe from the damage to the heater and the risk of fire due to self-temperature control characteristics, but a plane heater, which has been mainly installed in dry-use applications due to limitations of leakage current and induced current caused by an increase in contact area with an installation floor, may also be used for wet installation which uses a mortar.

Abstract: There is described an eddy current array probe for detection and depth sizing of a surface- breaking defect in a metallic material, said eddy current array probe comprising: a probe body comprising a plurality of probe elements arranged in a linear configuration, the probe elements each comprising at least one coil, the probe body being adapted to be displaced along a surface of the metallic material so that a longitudinal axis of the coil be parallel to the surface of the metallic material, the coil, when in use, being adapted to induce an eddy current within the metallic material detect the eddy current; and a set of active elements of the plurality of probe elements being adapted to be selectively operated at a plurality of time-spaced instances.

Abstract: A calibration method for calibrating a phased array probe that is used for testing girth welds for defects. The method utilizes a calibration device on which is defined a series of reflectors that correspond to a series of target zones. The phased array probe is placed via a wedge relative to the calibration device and the phased array probe is configured with an initial set of acoustic parameters which define at least a transmitting aperture, a receiving aperture and a beam steering angle. Using a Full Matrix Capture (FMC) acquisition process and a ray-tracing module, the values of the initial set of acoustic parameters are optimized to evolve a final set of acoustic parameters which the phased array probe utilizes for testing actual devices for weld defects.

Abstract: A pulse generation circuit and method includes using digital signals to trigger a first and second varying analog signals and detecting when they reach one or more reference levels. In response to the first and second varying analog signals reaching one or more reference levels, a first and a second digital control signals are produced and provided as input to a pulser producing a voltage excitation pulse having a width and timing defined by the first and second digital control signals.

Abstract: An electromagnetic probe for non-destructive inspection of a twisted tube of a twisted tube heat exchanger comprising a probe body having a sensing section being configured to allow circulation of the probe body within the length of circular tube and the length of helical oval tube and to allow displacement of the electromagnetic sensor(s) from a radially inward contracted position to a radially outward expanded position in close proximity to an interior surface of a crest of the oval tube; a conduit attached to a proximal end of the probe body, the at least one conductor extending within the conduit to a remote end of the electromagnetic probe.