Volodymyr Puyda, Maksym Oleksiv, Andriy Myts
The paper is devoted to the first stage of airplanes intelligent visual monitoring system development. The system will consist of 2 videocameras, video input, video output and video processing units (nowadays the model of the system with one camera is developed). Cameras are positioned on a two opposite sides of a landing strip in a way to provide for a visual measurement of distance from camera to a landing plane using sterescopic method. Each videocamera inputs one frame that is digitized and transferred to the video processing unit. Airplanes are recognized and identified on each video...
TC14 ISMQC 2013
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· 2013
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Christoph Ohrt, Andreas Pösch, Markus Kästner, Eduard Reithmeier
Fringe projection offers a great variety of application fields in geometry measurement of free form elements. From large measuring areas down to geometry elements with sizes in the millimeter range it can be used for fast areal measurements. With advanced deviation analyses methods errors in fabrication lines can be found promptly after their appearance which can minimize rejections. However, there are still fields that cannot be covered by classical fringe projection. One of these fields is the measurement of filigree form elements on narrow or internal carrier geometries. To overcome this...
TC14 ISMQC 2013
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Ksenia Ostrowska, Adam Gaska, Robert Kupiec, Jerzy Sladek
Along with fast development of industry and manufacturing techniques, also the coordinate metrology, which is closely linked with requirements of modern manufacturing systems, is developing. The increase in products quality requirements provides a new tasks for manufacturers of measuring instruments. Time of measurement, as well as requirements for its accuracy generate development of the new solutions in coordinate metrology systems, as well as the continuous improvement of existing ones. Undoubtedly, one of the newest and fastest growing solutions are Coordinate Measuring Arms. The paper...
TC14 ISMQC 2013
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Matteo Lancini, Ileana Bodini, Simone Pasinetti, David Vetturi Ration, David Vetturi
The increasing integration between electronics and mechanical engineering brings to the industrial market very hi-tech sensors, often non-linear, capable of more than a single input and single output. A problem more and more relevant for sensors like these is calibration. Classic linear calibration procedures, when applied to this extremely engineered sensors, lead to poor accuracy and are generally not satisfactory. The case study is the calibration of a bi-dimensional laser based position sensor, in particular a positive sensitive detector, that is an optical position transducer based on...
TC14 ISMQC 2013
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Andrzej Kawalec, Marek Magdziak
The objective of the research presented in the paper is the selection of suitable probe radius correction method in the case of coordinate measurements of a turbine blade. The investigations are based on theoretical analysis ofgeometric data and on further computer simulation of measurements and data processing. In the paper two methods for computing coordinates of corrected measured points are verified. Those so-called local methods of probe radius correction are based on the 2 nd degree and the 4 th degree Bézier curves. They are dedicated first of all to coordinate measurements of...
TC14 ISMQC 2013
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Piotr Garbacz, Tomasz Giesko
The paper presents the capability of an infrared thermography for surface inspection of hot aluminium extrusion. Monitoring the exit temperature of the extruded profile is the key component of the manufacturing control system. In hot metal forming technologies, the run of process and product quality are critically related to temperature. From the nature of aluminium forming, temperature is the important factor which affects the process kinetics and grain recrystallization within the material. The exit temperature of the extruded profile is usually applied as feedback value for the automatic...
TC14 ISMQC 2013
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Gisela Lanza, Benjamin Haefner
Computed tomography provides large potential for the quality assurance of micro gears due to its high information density. In this article, an advanced data evaluation strategy based on areal gear parameters, as well as a methodology to determine the task-specific measurement uncertainty by means of computed tomography are presented.
TC14 ISMQC 2013
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Srinagalakshmi Nammi, Sree Lakshmi Uppu, Ramamoorthy B
In this work, surface roughness of milled surfaces is quantified using digital images obtained by a machine vision system. Images captured are pre-processed for waviness profile elimination using digital filters. The influence of various filters at different cut-offs on the image based surface roughness value ‘G a ’ is studied in comparison with the conventional surface roughness parameter, ‘R a ’. In addition, Grey Level Co-occurrence Matrix (GLCM) is used to determine the image quantification parameters namely contrast, correlation, and energy using the images of machined components...
TC14 ISMQC 2013
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Gianluca Tristo, Manuel Balcon, Simone Carmignato, Giuliano Bissacco, Enrico Savio
In micro electrical discharge milling material is removed by electrical discharges while driving a cylindrical tool electrode along tool paths as in conventional milling operations from the workpiece and the tool electrode. Hence, to achieve high precision machining it is necessary to accurately adjust the tool-workpiece relative position implementing a tool wear compensation strategy, which has to be empirically calibrated for the specific machining conditions. The measurement of the material removed from both tool and workpiece is of paramount importance, since tool wear compensation and...
TC14 ISMQC 2013
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Wito Hartmann, Andreas Loderer
The paper describes an approach how to measure function-oriented with appropriate measurement technology and evaluation methods. At first important features of the surface, which have a large influence on the functional behaviour, are determined based on a physical-mathematical model of the function. Then – adapted to the measuring task – it is described how to measure these features starting with the selection of suitable measurement procedures (optical/tactile, 2D/3D, multi-scale data fusion). Moreover, the evaluation of the measurement values is also crucial. Automated evaluation...
TC14 ISMQC 2013
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· 2013
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