To provide a surface property inspection device and method capable of inspecting the surface treatment state of treated material subjected to surface treatments. A surface property inspection device 1 includes an AC power supply 10, an AC bridge circuit 20, and an evaluation apparatus 30, and the AC bridge circuit 20 is formed by a variable resistor 21 with a distribution ratio of ?, a reference detector 22, and an inspection detector 23. The inspection detector 23 includes a coil 23b wound so as to oppose the surface property inspection area of the test object M; an eddy current is excited in the test object M by supplying AC power to the coil 23b. A reference test object S with the same structure as the test object M is placed in the reference detector 22 to cancel inspection environment effects.

A calibration system for an electromagnetic (EM) tool includes a processor. The processor employs the EM tool to measure responses at each of a plurality of channels. The processor records the measured responses at each of the channels in an EM data log for the channel. The processor determines a nominal value of each of the channels, as being equal to a histogram peak of the EM data log. The processor selects one or more calibration points from the EM data log for a particular channel, based on a difference between the nominal value of the particular channel and the measured response at the calibration point being greater than a particular threshold. The processor determines a plurality of parameters by reducing a misfit between synthetic data and both the nominal values of the channels and the measured responses of the channels at the selected one or more calibration points.

A calibration device for a non-destructive inspection/measurement system is provided, including an excitation coil; a detection coil; and a computer that applies a sinusoidal signal or a combined signal including multiple sinusoids having mutually different frequencies to the excitation coil in order to excite a pipe body, and that detects changes in the output voltage of the detection coil. The calibration device calibrates the detection results in the computer by entering, as variables in simultaneous equations, the amplitudes and phase differences of the output voltage of the detection coil at multiple calibration points of known thickness on the pipe body. The calibration device performs calibrations by using multiple different calibration conditions at each of the calibration points, and entering, into the simultaneous equations, the amplitudes and phase differences of the output voltage of the detection coil for each of the calibration conditions.

An inspection system is provided including one or more magnetic probes configured to acquire stress measurements at a plurality of points along a surface of a specimen, wherein the stress data is acquired at a plurality of angles for each of the plurality of points and a computing system communicatively coupled to the one or more magnetic probes, the computing system including at least one data processor and a memory storing a plurality of predetermined material calibration parameters and material properties for a plurality of materials and instructions which, when executed by the at least one processor, cause the at least one processor to receive, from the one or more magnetic probes, the stress measurements, compare the stress measurements to the material calibration parameters and material properties, determine material properties of the specimen based on the comparing and provide the material properties of the specimen to a user interface display.

A fabricated sample of a bearing ring including sub-surface non-metallic inclusions, including a first bore and a second bore extending but not penetrating a bearing raceway surface, a non-metallic material inserted into the second bore and a first and a second plug for the first and the second hole, respectively. A method of fabricating a bearing detection sample including a sub-surface non-metallic inclusion and using the fabricated sample to detect sub-surface non-metallic inclusions in production parts, including fabricating the detections sample, tuning a suitable detection probe using the sample, and using the tuned and optimized probe to detect sub-surface non-metallic inclusions in production bearing components.

A method of examining a wheel or rim on site is provided using a system comprising an eddy current array probe in electronic communication with a computer, the computer having a processor and a memory, the memory to provide instructions to the processor. The method comprises: standardizing the eddy current array probe with a reference standard; adjusting the eddy current array probe with a lift off screw to provide a suitable distance between the probe and a surface of the wheel or rim; scanning the wheel or rim with an alternating current; sending a data set to the computer; the computer analyzing the data set; and the computer displaying a three-dimensional image of the data set on a user interface. This method is particularly developed for off road vehicles at mining sites or any off road vehicle wheels and rims.

A magnetic field sensor system has a plurality of magnetic field sensor elements, which each are configured to provide an individual sensor value, and of which a first portion is arranged in a first contiguous area and a second portion is arranged in a second contiguous area, and a coil wire arrangement with a first coil portion and at least a second coil portion being connected to the first coil portion, wherein the first coil portion is arranged close to the sensor elements of the first area and the second coil portion is arranged close to the sensor elements of the second area such that, if a predetermined current is applied to the coil wire arrangement, a first magnetic field component is generated at the first area and a second magnetic field component is generated at the second area being opposite to the first magnetic field component. The magnetic field sensor system is configured to produce a total sensor value that is based on a difference between the individual sensor values provided within the areas.

A method of calibrating a sensor array having elements spaced from one another in a first direction, the array defining an array spatial response function, includes: providing a test workpiece having at least first and second calibrated defects spaced apart in the first direction by a characteristic distance such that when the first calibrated surface defect is located at a position corresponding to an array response function maximum, the second calibrated surface defect is located at a position corresponding to an array response function minimum; passing the array across the first and second calibrated surface defects in a direction normal to the first direction and determining a peak sensor signal from at least two of the elements in the array to determine an array spatial response function root mean squared average; and setting a rejection threshold as a predetermined proportion of the array spatial response function root mean squared average.

Standards for non-destructive testing methodologies and methods of fabricating the standards are disclosed herein. The standards include a void-defect coupon that includes a spheroidal void and an elongated void. The spheroidal void has a maximum dimension and a spheroidal void volume. The elongated void had a longitudinal dimension, a maximum transverse dimension, and an elongated void volume. The longitudinal dimension of the elongated void is greater than the maximum dimension of the spheroidal void. The maximum transverse dimension of the elongated void is less than the maximum dimension of the spheroidal void. The methods include forming a first void-defect coupon and forming a second void-defect coupon.

An eddy current sensor with a remote current sense has a drive conductor, current sense conductor, and one or more sense conductors. The drive conductor has first and second loop portions, the current sense conductor has a third loop portion, and the sense conductor has a sense loop portion. The first and third loop portions are proximal to each other to form the remote current sense. The sense loop portion and the second loop portion are proximal to each other to form a sense element. The remote current sense and sense element are suitably distant from one another to have separate environments of sensitivity. The sensor may be used by collecting transimpedance measurements from both the remote current sense and sense element under known conditions, and with the sense element under unknown conditions. These measurements are combined to provide a calibrated measurement result suitable for further analysis.