Lufthansa Technik Ag

The Boeing Company

Sven Rasche

Jan Oke Peters

Michael Thies

Werner Neddermeyer

Thorsten Schueppstuhl

Tomas Domaschke

Soenke Bahr

Mattes Schumann

Maik Dammann

Oliver Neumann

Tarek Mostafa

Lukas Bath

Ronald Blöcher

Sönke Bahr

Thorsten Schüppstuhl

Jens-Peter Tuppatsch

Sören Wedow

Martin Brak

Philipp Färber

Nicholas Chin Reasoner

Andrei Draghici

Ronald Blocher

Soren Wedow

Sonke Bahr

Thorsten Schuppstuhl

There is provided a system for measuring a bulb diameter of an installed one-sided fastener in a structure. The system includes the structure and the installed one-sided fastener installed through a hole in the structure. The installed one-sided fastener has a fastener body having a fastener bulb with the bulb diameter. The system includes an optical imaging system having a probe, a camera sensor, and a linear axis slide. The system includes image data, including a first image of the fastener bulb taken from a first position, and a second image of the fastener bulb taken from a second position positioned a predetermined distance from the first position. The system includes a post image processing system, to process the image data, and to determine a bulb diameter measurement of the bulb diameter, and includes an edge detection process, an ellipse fitting process, and a stereo vision process.

System and method for measuring a bulb diameter of an installed one-sided fastener in a structure

An apparatus investigates a technical device using a borescope. The apparatus has: a guide tube which is introducible through a borescope opening on the technical device to be inspected using the borescope; and a repeatedly plastically deformable carrier configured to guide a borescope head arranged at one end of the carrier. The guide tube is designed to deform the carrier during the passage of the carrier through the guide tube.

Apparatus for borescope inspection of technical devices

A method uses a flexible endoscope to inspect one or more hard-to-reach components of a gas turbine. The flexible endoscope has at least one image capture unit, which is configured to capture visual image information and associated 3D data, and which is located at a free end of the flexible endoscope. The method includes: introducing the flexible endoscope through an inspection opening; capturing the visual image information and the associated 3D data by the at least one image capture unit; comparing the captured 3D data to a 3D model of a component to be examined, and based on the comparison, ascertaining a relative pose of the at least one image capture unit in relation to the component; and texturing the 3D model with the visual image information captured by the at least one image capture unit, in accordance with the ascertained relative pose of the image capture unit.

Method and device for inspecting hard-to-reach components

A borescope is for optically inspecting gas turbines of aircraft engines. The borescope having an electronic image capture unit as a borescope objective at an end of a shaft, which is suitable for insertion into a borescope opening and configured for accurate positioning of the borescope objective relative to the borescope opening and through which data lines and supply lines for the image capture unit are guided. The image capture unit has: two spaced apart image capture sensors, recording cones of which overlap in a specified recording plane forming a recording region, in such a way that image data of the two image capture sensors are configured to be processed into 3-D data by way of triangulation.

Borescope that processes image data into 3-d data for optically inspecting gas turbines

A borescope includes an electronic image capture unit having two image capture sensors as a borescope lens at an end of a shaft that is designed for being inserted into a borescope opening, a position and alignment of the image capture sensors in relation to one another being suitable for ascertaining three-dimension (3D) information using triangulation; and a pattern projector configured to project a pattern into a common recording region of the image capture sensors. The pattern projector includes: a fundamentally optically imaging light-guide bundle, which is made up of statistically distributed optical fibers having differing transmittances, to whose input surface a light source is coupled and whose output surface is aligned with the region captured by the image capture sensors.

Borescope with pattern projection

A method for borescope inspection of a component uses a stereo borescope for recording the component. The method includes: generating two stereoscopic partial images by means of the stereo borescope; calculating 3D triangulation data from the two stereoscopic partial images; registering the 3D triangulation data to a 3D CAD reference model of the component captured by the stereo borescope, while determining a projection point; projecting 2D image data determined from the two stereoscopic partial images onto the 3D CAD reference model from the determined projection point; and determining damage by image analysis of the projected 2D image data and by ascertaining deviations of the registered 3D triangulation data vis-&#xe0;-vis the 3D CAD reference model.

Borescope inspection method and device

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Hamburg, Germany

Sven Rasche