United Technologies Corporation

Randall Joyner

Jesse R Boyer

Jeffry K Pearson

James Romanelli

Benjamin W Meissner

Jeffrey S Beattie

Daniel A Snyder

James R Murdock

Joseph D Drescher

David A Krause

Michael A Morden

Robert E Erickson

Thomas H Rogers

Stephen D Doll

Kun Tong

Gene P Allocca

Jeffrey K Pearson

Zbigniew Przeszlo

Andrew J Brinks

A method of optical data acquisition includes shaping a flexible reference system to be at least partially within a limited line of sight volume with respect to a workpiece.

Flexible reference system

A method of inspecting components between a pre-coated state and a post-coated state is provided. The method entails providing at least first and second datum points onto the component in the pre-coated state, where each of the at least first and second datum points have a substantially hemi-spherical shape and a center point. The center points of each of the at least first and second datum points are utilized for measurement of a selected portion on the component in the pre-coated state. Then, the component is coated. Next, the center points of each of the at least first and second datum points are utilized for measurement of the selected portion on the component in the post-coated state. The pre-coated state measurements and the post-coated state measurements are then correlated for inspection purposes.

Datum transfer apparatus and method for inspecting coated components

A method is provided for inspecting a plurality of parts with an electronic measurement device and a processing system. The method includes a step of creating surface geometry maps of the parts utilizing the electronic measurement device, where each part was manufactured utilizing the manufacturing device. Geometric part models of the parts are generated from the surface geometry maps. The part models can subsequently be analyzed to determine whether a manufacturing device that manufactured the plurality of parts manufactures parts that comply with a part design specification.

Method for inspecting a manufacturing device

A method and system are provided for inspecting a surface of an object with an optical scanner and a laser vibrometer. The method includes the steps of: (a) mapping at least a portion of the object surface using the optical scanner; (b) projecting a beam of light from the laser vibrometer onto the object surface at a measurement point; (c) locating the measurement point relative to the object surface using the optical scanner; and (d) measuring a position of the object surface using the laser vibrometer to determine, for example, a deflection of the object surface.

Method and system for locating a laser vibrometer during non-contact scanning

A method for creating an artifact for use with an optical three-dimensional measuring system includes steps of: (a) providing an artifact that comprises an inspection surface, which artifact is configured to be scanned by a non-contact sensor included in the optical three-dimensional measuring system, which artifact comprises at least one of a substantially spherical body and a turbine engine component, and which inspection surface comprises a surface of one of the substantially spherical body and the turbine engine component; (b) heating the artifact to a predetermined temperature; and (c) coating the inspection surface of the heated artifact with an approximately uniform coating of dry film lubricant.

Artifacts, method of creating such artifacts and methods of using such artifacts

A method for inspecting geometrical shapes of objects to determine selected dimensions thereof based on data characterizing such objects obtained through stereoscopic photographs taken by a pair of cameras with fields of view intersecting to thereby provide a photographic event measurement volume that includes at least a portion of each of such objects being photographed. The method involves using previously specified procedures to check on the cameras performance consistency in photographing from different positions, preparing the object to be inspected including providing reference point targets thereon, scanning that object with the cameras from different camera pair positions, processing the resulting data to represent the scan basis geometrical shape of the object, and orient it to compare with the dimensional specifications therefor.

Method for repeatable optical determination of object geometry dimensions and deviations

Artifacts, methods of creating such artifacts and methods of using such artifacts are provided. In this regard, an exemplary embodiment of a method for creating an artifact for quantifying measurement accuracy of non-contact sensors included in optical three-dimensional (3-D) measuring systems, comprises: fabricating an artifact using a base material; and coating the artifact with an approximately uniform coating of dry film lubricant.

Artifacts, methods of creating such artifacts and methods of using such artifacts

A method for evaluating three-dimensional (3-D) coordinate system measurement accuracy of an optical 3-D measuring system using targeted artifacts is provided. In this regard, an exemplary embodiment of a method for evaluating 3-D coordinate system measurement accuracy using targeted artifacts comprises: taking a series of measurements from different positions and orientations using target dots on a targeted artifact with an optical 3-D measuring system; and calculating measurement errors using the series of measurements. An exemplary embodiment of a targeted artifact used with the method includes a base and target dots located on the base.

Targeted artifacts and methods for evaluating 3-D coordinate system measurement accuracy of optical 3-D measuring systems using such targeted artifacts

A method for measuring dimensions between selected points on a side of interest in objects selected for measurement by an optical measuring system comprising a flatbed scanner and a connected computer system through acquiring a reference image to provide corresponding image distance errors; and also acquiring a measurement object image. Deviation curves are provided as the basis for determining deviation errors in the measurement object image. Corrected measurement object image distances are formed through combining the deviation errors in the measurement object image distances with the corresponding measurement object image. These corrected measurement object image distances are used to determine distances between chosen pairs of those selected locations.

Scanner based optical inspection system

A method of inspecting an internal feature of a gas turbine component includes removing a portion of the turbine component to expose the internal feature, treating the surfaces of the internal feature to provide the surfaces with a substantially uniform coloration, generating an electronic model of the internal feature, analyzing the electronic model generated with reference to a nominal electronic model, and providing an output based on the analysis of the electronic model generated.

Method of inspecting turbine internal cooling features using non-contact scanners

A method of measuring a coating thickness involves projecting a pattern of light on a surface. A first reflection of the pattern of light is received by a first image capturing device. A second reflection of the pattern of light is received by an image capturing device which may be the same or a different image capturing device. The first reflection is compared with the second reflection. A first dated map of the surface is created by comparing the first reflection and the second reflection. A coating is deposited on the surface. A second data map of the surface with the coating is created by comparing reflections. The first data map and the second data map are then compared to determine a thickness of the coating.

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Union, CT, United States of America

Randall Joyner