![]() The CTAD program has produced data in a number of reports demonstrating the quantitative measurement capability of CT and its advantages for castings. (MM)Ĭomputed tomography (CT) has been applied to cast products demonstrating benefits to product development, dimensional measurements and critical region evaluation. The CD presentation package is available from Wright Laboratory. The presentation contains the summary conclusions of the CTAD program, background material on basic X-Ray CT, examples of the applications of computed tomography that were demonstrated in the CTAD program, an image processing program for demonstrating CT image analysis, and references for more information. The interactive multimedia allows the users to move through the material at their pace, entering deeper levels of detail as desired. The package can be used by an individual to review information or can be used by a presenter to an audience with an LCD screen and overhead projector. The approach for summarizing the data has been to create a presentation package for use on a Macintosh computer containing the major conclusions of the CTAD program with a number of specific examples. Over 18 formal technical reports have been written for WL publication. The 'Advanced Development of X-ray Computed Tomography Applications' demonstration (CTAD) program, sponsored by Wright Laboratory, generated significant amounts of data and conclusions on the application of X-ray computed tomography (CT) to aircraft structures, materials and components. The Interactive Multimedia Presentation for Applied Computed Tomography (IMPACT) package includes the following areas: (1) Conclusions and Recommendations, (2) X-Ray Computed Tomography, (3) CT Application Stories, (4) Interactive Imaging Program and (5) For More Information. Computed Tomography (CT), Failure analysis, Electromechanical, Materials, Electrical, Components, Honeycomb, Nondestructive Evaluation (NDE).Īn interactive multimedia presentation has been developed for viewing on a Macintosh workstation that summarizes the results of the 'Advanced Development of X-ray Computed Tomography Applications' demonstration (CTAD) program. High resolution (>4 lp/mm) CT with combined radioscopy (real- time radiography) capability is advocated for failure analysis facilities. CT also can be applied to systems to observe the internal positions as a function of test conditions. Examples have included mechanical and electrical system assembly, system internal measurements and fitups, and material damage evaluation. In some cases, CT can directly resolve the problem, and in other cases, provides key supplemental information for guiding further investigations and reducing the risk of incorrect or incomplete analysis. Case studies of failure analyses have been demonstrated to the Air Force and industry showing the ability of CT to significantly benefit such studies. Failure analysis laboratories of sufficient size can justify the cost saving benefits of using CT for equipment procurement. Savings are realized in reduced risk, determining proper direction for irreversible failure analysis activities and schedule improvement. Savings are realized in reduced risk, determination of proper direction for irreversible failure analysis activities and schedule improvement. The volumetric feature detection and three-dimensional positioning capability of X- ray computed tomography are valuable and cost saving assets to a failure analysis laboratory. Computed Tomography (CT), Geometry acquisition, Castings, Computer Aided Design/Engineering (CAD/E), Workstation.įailure analysis is an important engineering evaluation in any product development cycle essential to product reliability and evolution. The process of obtaining digital definition of an existing component is referred to as geometry acquisition. Once data are transferred to a workstation, the designer can manipulate the data to create a part drawing. Multiple slice CT data may be used to completely define the object, or CT data at selected orientations may be used to define specific features. In the case of components that do not have adequate drawing documentation, particularly ergonomically, aesthetically or aerodynamically shaped parts, the CT data provide a highly cost effective approach for generating digital format documentation. Productivity gains are realized in generating computer drawings for as-built components. By converting the CT data to computer aided design/engineering (CAD/E) workstations, the designer/engineer can access the as-built component geometry. The data are available in digital format to be input not only to NDE workstations but also design workstations. X-ray computed tomography (CT) provides quantitative measures of component feature dimensions and density as related to the linear X-ray attenuation of the material under study.
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