Abstract:
A detection process is disclosed. The detection process includes applying a load to a preselected portion of an article. The applying of the load permits visually indiscernible cracks in the preselected portion of the article to be detected. The treated article includes a preselected portion having treated visually indiscernible cracks. The treated visually indiscernible cracks are substantially devoid of damage due to the treatment of the visually indiscernible cracks.
Abstract:
A method, system and article adapted for ultrasonic inspection of the article. The article is disk-shaped and has axially-oriented slots circumferentially spaced from each other at a periphery of the article, with members secured at the periphery of the article such that each member has a retention feature that extends into and engages a corresponding one of the slots so as to secure the members to the slots. Cavities are defined by and between the slots and radially-inward extremities of the retention features within the slots. The inspection method and system entail the use of at least one ultrasonic transducer placed within at least a first of the cavities defined by a first of the slots. The transducer is configured and oriented to perform a diagnostic technique on the article by emitting an ultrasonic signal that intersects an interior surface of a second of the slots immediately adjacent the first slot.
Abstract:
A method in a computer system having a display for producing a representation of an article having embedded features including calibration target(s) or simulated defect(s) on the display. The method can include generating a representation of a test component on the display, generating a representation of embedded features on the display and combining the representations of the test component and the embedded features on the display to generate a combined representation. The method can further include converting the combined representation to a layer-by-layer format including manufacturing parameters for additive manufacturing, and producing the test article with an additive manufacturing process.
Abstract:
A method, system and article adapted for ultrasonic inspection of the article. The article is disk-shaped and has axially-oriented slots circumferentially spaced from each other at a periphery of the article, with members secured at the periphery of the article such that each member has a retention feature that extends into and engages a corresponding one of the slots so as to secure the members to the slots. Cavities are defined by and between the slots and radially-inward extremities of the retention features within the slots. The inspection method and system entail the use of at least one ultrasonic transducer placed within at least a first of the cavities defined by a first of the slots. The transducer is configured and oriented to perform a diagnostic technique on the article by emitting an ultrasonic signal that intersects an interior surface of a second of the slots immediately adjacent the first slot.
Abstract:
Processes and systems for detecting surface anomalies in components generally includes contacting a surface of the component with a detection apparatus, wherein the detection apparatus comprises at least one post, a wire extending from the post and a sensor in operative communication the wire; and sensing the surface anomaly as an increase in resistance of the wire across the surface.
Abstract:
A pulsed eddy current two-dimensional sensor array probe for electrically conducting component inspection includes a drive coil disposed adjacent to a structure under inspection, a pulse generator connected to the drive coil and operable to energize in a pulsed manner the drive coil to transmit transient electromagnetic flux into the structure under inspection, and an array of sensors arranged in a two-dimensional array and substantially surrounded by the drive coil and operable to sense and generate output signals from the transient electromagnetic flux in the structure under inspection.
Abstract:
A self referencing eddy current probe for determining conductive coating thickness includes a housing having a reference sample area, for accommodating a reference sample, and a testing edge, for positioning on a component during a coating thickness measurement. The eddy current probe further includes a reference eddy current coil situated in the housing adjacent to the reference sample area and a test eddy current coil, which is located at the testing edge. A self referencing eddy current measurement system, for measuring a thickness of a conductive coating on a component, includes the self referencing eddy current probe. The system further includes a signal generator for energizing the test and reference coils and a comparison module for comparing a test signal received from the test coil and a reference signal received from the reference coil and outputting a compared signal.
Abstract:
A method of inspecting a preselected area of an electrically conductive component to determine whether flaws are present. The method includes the steps of permanently mounting an eddy current element on the component over the preselected area and energizing the element to generate alternating magnetic fields proximate the component. An electrical signal generated by a secondary magnetic field formed proximate the component is detected using the element and the detected electrical signal is compared to a reference signal to determine whether the detected signal is different than the reference signal. Differences indicate the presence of a flaw in the component. Inspection apparatus for performing this method is also disclosed.
Abstract:
A method and system for ultrasonically inspecting turbine wheels and other disk-shaped articles having a central opening and multiple secondary openings radially spaced outward from the central opening. At least one ultrasonic transducer is placed in at least one of the secondary openings of the wheel. The transducer is configured and oriented to perform a pulse-echo diagnostic technique on the wheel by emitting ultrasonic signals that intersect radials of the wheel at angles of approximately ninety degrees to the radials. The ultrasonic signals intersect the radials at points so that a plurality of points are located on a plurality of radials. The points define a locus of points through the volume of the wheel between the central opening and the secondary opening, such that the volume is inspected for defects. The transducer receives ultrasonic signals that are reflected from one or more points when a defect is encountered.
Abstract:
An omnidirectional eddy current probe includes a number of sense coils arranged in a stack having a principal axis. At least two of the sense coils are rotationally skewed about the principal axis relative to one another. The sense coils are operatively connected to each other and a drive coil is also positioned in the stack. An impulse through the drive coil induces a magnetic influx through a conducting material specimen having a surface, thereby generating eddy currents on the surface. Secondary magnetic field generated from the eddy currents produces corresponding signals in the sense coils, and the signals are then analyzed for the possibility of surface flaw in the conducting material.