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VIRTUAL INSPECTION

IP.com Disclosure Number: IPCOM000199446D
Publication Date: 2010-Sep-04
Document File: 6 page(s) / 31K

Publishing Venue

The IP.com Prior Art Database

Abstract

A technique which enables modeling part inspection to attain similar sophistication as shop floor techniques and tools is disclosed. This technique proposes coupling a light gauge system which inspects part geometry, with output from forming and or forging simulations to facilitate the inspection of simulated compressor blades.

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RP13488

BRIEF ABSTRACT

    A technique which enables modeling part inspection to attain similar sophistication as shop floor techniques and tools is disclosed. This technique proposes coupling a light gauge system which inspects part geometry, with output from forming and or forging simulations to facilitate the inspection of simulated compressor blades.

KEYWORDS

    Visual inspection, Finite Element Analysis (FEA), part geometry, light gauge system, compressor blades, part modeling, point cloud, simulation

DETAILED DESCRIPTION

    Generally, modern analysis techniques, such as Finite Element Analysis (FEA), Computational Fluid Dynamics (CFD) and/or the like are commonly utilized to determine the configuration of bodies under loading. Such techniques are utilized in the analysis of loading properties, such as point and body forces, torques, moments, accelerations, heat and electromagnetic radiation among others. Examples of such analysis include evaluation of the deflection of a part due to thermal expansion, deflection of a mirror under the load of gravity and estimation of the final equilibrated shape of a sheet-metal automobile panel after forming considering residual stresses and spring back. Such characteristics, the

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VIRTUAL INSPECTION

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RP13488

resulting shape a body attains under some loading is of great interest to engineers and designers.

    While it has become commonplace to perform such types of analytical techniques, conventional techniques for analyzing and comparing the results with experimental values are not advanced. Results from analysis codes are typically given as displacements at discrete locations or interpolated to yield continuous values throughout the body. A common reference frame is used, usually the reference frame used to establish the initial configuration. However, it is difficult to relate such a frame and hence the displacement results, to the datum of interest on a part. In contrast, actual parts or experimental trials are analyzed with traditional metrological equipments like coordinate measurement machines, light diffraction measuring equipment, profilometry among others. In measurements taken for actual parts one cannot rely on a reference to an initial configuration as with modeling but the datum must necessarily be established to determine a reference frame to give meaning to the data.

    Therefore consider a process modeled with state of the art analysis software and also a process performed on a shop floor. Both types of techniques yield results. The shop floor results are collected and presented with a rich set of metrological tools. However, the tools available to process and analyze the modeling results are undeveloped and often difficult to relate to the empirical results. There is a need in the art for a technique and/or tools to bring modeling part inspection to the current level of sophistication as shop floor tools.

    According to the present technique, a system to inspect part geometry, ca...