摘要:
The method of validating a calibration of a phased-array inspection instrument uses a calibration block having two reflectors located below an inspection surface at two different depths. The method comprises: obtaining angle reference data associating expected angles with corrected angles, each corrected angle being usable to propagate a phased-array beam into the calibration block at a true angle relative to the inspection surface that corresponds to the corresponding expected angle; propagating, from the inspection surface and targeting each one of the two reflectors, phased-array beams into the calibration block at a true angle using the angle reference data, and measuring echo signals associated with the propagated phased-array beams; determining time-of-flight values corresponding to the reflection of the phased-array beams on the two reflectors using the echo signals; and validating the calibration of the phased-array inspection instrument using the time-of-flight values, the two different depths and the true angle.
摘要:
A phased array system and the inspection method which is configured to inspect the weld seam of an HSAW for all standard types of flaws located both near pipe's internal and external surfaces in one scan pass, diminishing the need of making mechanical adjustment for the probes during the one pass of scan. The configuration includes the usage of at least one linear PA probe for Lamination inspection right above HAZ zone, at least one pair of PA probes for longitudinal defects inspection and holes detection and at least two pairs of PA probes for transversal defect inspections.
摘要:
The invention herein disclosed provides a 2D coil and a method of using the 2D wound EC sensor for reproducing the Eddy Current Testing (ECT) response of a prior art 3D orthogonal sensor. The 3D orthogonal sensor is conventionally wound onto a 3D core, with at least some of the surfaces being un-parallel to the surface be inspected. Using the herein disclosed 2D configuration allows the use of printed circuit board technologies for the manufacturing of these EC sensors. The herein disclosed method and the associated 2D EC sensors are particularly useful for reproducing the EC effect of conventional orthogonal probe arrays.
摘要:
A touch screen is disclosed which responds to a user's touch for re-drawing, re-scaling, re-translating and re-positioning an impedance plane signal received from non-destructive testing equipment, such as an eddy current sensor. The impedance plane is manipulated by slidingne, two or more fingers simultaneously to an end position to effectuate a complete re-drawing operation of the image.
摘要:
Disclosed is an ECA probes assembly capable of providing reliable and durable ECA inspections of dovetail slots without the use of an external guiding mechanism. The design combines a novel universal probe manipulator with a probe support suited for a wide range of probe supports which fit a rage of turbine disks. The probe support embodies a rigid yet expandable core, exerting a force pushing the array probe against the inner cavity of the dovetails. The pushing force is strategically located in critical areas of the dovetail leading to array probe to be self-guiding into the dovetail, and to provide optimum performance with consistent and stable lift-off.
摘要:
A touch screen is disclosed which responds to a user's touch for re-drawing, re-scaling, re-translating and re-positioning an impedance plane signal received from non-destructive testing equipment, such as an eddy current sensor. The impedance plane is manipulated by slidingne, two or more fingers simultaneously to an end position to effectuate a complete re-drawing operation of the image.
摘要:
An orthogonal eddy current probe with at least three coils, each of the coils is wound across the two facing sides of an at least six-sided right polygonal [b1] prism. At each time interval, two of the three coils are used as driver coils, being charged simultaneously with electric current driven in coherent directions to induce a combined eddy current and one of the coils is used as a receiver coil to sense the eddy current, with the combined eddy current to be orthogonal to the receiver coil. Each coil alternates to be one of the driver coils or the receiver coil at a predetermined switching sequence and a predetermined switching frequency during consecutive time intervals. The eddy current probe provides advantages of inspecting a test surface for flaws of any flaw orientation with one pass of scan, providing sufficient sensitivity and desirable noise cancellation in all directions.
摘要:
The invention herein disclosed provides a 2D coil and a method of using the 2D wound EC sensor for reproducing the Eddy Current Testing (ECT) response of a prior art 3D orthogonal sensor. The 3D orthogonal sensor is conventionally wound onto a 3D core, with at least some of the surfaces being un-parallel to the surface be inspected. Using the herein disclosed 2D configuration allows the use of printed circuit board technologies for the manufacturing of these EC sensors. The herein disclosed method and the associated 2D EC sensors are particularly useful for reproducing the EC effect of conventional orthogonal probe arrays.
摘要:
Disclosed are a method and an improvement to the existing conventional magnetic flux leakage inspection device that employ some fixed magnets that are fixed inside the magnet yoke and some movably adjustable magnets, allowing their dipole orientation to be adjusted between 0° and 180° relative to that of the fixed magnets. A lever and gear set connected to the adjustable magnets can be operated to achieve desired level of magnetic strength of the device, including turning off the whole magnetic field, by causing the fields of the fixed and adjustable magnets to cancel each other. The disclosed adjustable yoke can also be used in other NDT/NDI applications where providing an adjustable magnetic strength is desirable.
摘要:
An eddy current probe assembly suitable for inspecting a test object with longitudinal shape, being passed through the assembly in the object's axial direction during an inspection session, the probe assembly comprising multiple probe modules being disposed in a radial plane and with the modules partially overlaying on each other forming an iris structure encircling an inspection zone, wherein a movement in unison of each of the probe modules closer to or further away from the center of the inspection zone makes the inspection zone enlarged or contracted. Spring tension is applied on each of the probe modules so that constant life-off in maintained between the probe modules and the test surface. Array of eddy current elements for each probe module and multiple layers of probe modules can be employed to achieve complete coverage of the test surface. The radial cross-sectional shapes of the test objects can be of round or polygonal.