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Measurement strategy as a determinant of the measurement uncertainty of an optical scanner

Systems, XXII, 4, 2015, 565-576. [4] Wieczorowski M., Koteras R., Znaniecki P., Use of optical scanner for car body quality control, PAK, 1, 2010, 40-41. [5] Keller P., Contactless measurement of flat dimensions using digital image processing methods, In. XIV. Gemeinsames Wissenschaftliches Kolloquium TU Dresden-TU Liberec, TU Dresden, Germany, 2003, 7-12. [6] Palousek D., Omasta M., Koutny D., Bednar J., Koutecky T., Dokoupil F., Effect of matte coating on 3D optical measurement accuracy, Optical Materials, 40, 2015, 1-9. [7] Barbero B., Ureta R

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Reduction of Milling Time by Using CAQ Technologies

Abstract

The paper is focused on reducing machining time by using 3D optical scanner of ATOS Triplescan II. Workpiece was a forging die, which was renovated by hard facing. The contribution deals with comparing the CAM simulation of roughing process according to the STL model imported from ATOS, and simulation without thus-defined workpiece. The results indicate a significant improvement of machining time based on CAQ technology and usage of the ATOS device for measuring the errors of weld deposit.

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Application of Replica Technique and SEM in Accuracy Measurement of Ceramic Crowns

Application of Replica Technique and SEM in Accuracy Measurement of Ceramic Crowns

The paper presents a comparative study of the measuring values of the marginal gap related to the ceramic crowns made by dental CAD/CAM system using the replica technique and SEM. The study was conducted using three experimental groups, which consisted of ceramic crowns manufactured by the Cerec CAD/CAM system. The scanning procedure was carried out using three specialized dental 3D digitization systems from the Cerec family - two types of extraoral optical scanning systems and an intraoral optical scanner. Measurements of the marginal gap were carried out using the replica technique and SEM. The comparison of aggregate values of the marginal gap using the replica technique showed a statistically significant difference between the systems. The measured values of marginal gaps of ceramic crowns using the replica technique were significantly lower compared to those measured by SEM. The results indicate that the choice of technique for measuring the accuracy of ceramic crowns influences the final results of investigation.

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WinCELL - an image analysis tool for wood cell measurements

Program WinCELL - narzędzie do analizy preparatów mikroskopowych komórek drewna

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Proposed Use of Monte Carlo Simulated Images to Evaluate the Accuracy of Measurements on X-Ray Computed Tomography

] Gapinski, B., Wieczorowski, M., Marciniak-Podsadna, L., Dybala, B., Ziolkowski, G. (2013). Comparison of different method of measurement geometry using CMM, optical scanner and computed tomography 3D. In 24th DAAAM International Symposium on Intelligent Manufacturing and Automation . [8] Hermanek, P., Carmignato, S. (2016). Reference object for evaluating the accuracy of porosity measurements by X-ray computed tomography. Case Studies in Nondestructive Testing and Evaluation , 6, 122-127. [9] Kiekens, K., Welkenhuyzen, F., Tan, Y., Bleys, P., Voet, A

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