Influence of different random pattern creation forms on the results of experimental modal analysis performed by high-speed digital image correlation

• Autorzy: Hagra M. , Schrötter M. , Lengvarsky P.
• Języki publikacji: EN

Abstrakty

EN

In this contribution an influence of random contrast patterns creation on the quality of the obtained results of experimental modal analysis performed by high-speed digital image correlation is described. Three common forms of random pattern creation were investigat-ed. While the first form was presented by the black speckles printed on white matt vinyl foil and bonded on the sample surface, in the sec-ond and the third case, respectively, the black speckles were sprayed on white sprayed sample surface or on paint white one. For the pur-poses of modal parameters estimation in the form of natural frequencies, mode shapes and damping ratios the program called Modan3D, developed in the authors department, was used. The results obtained by Modan3D were compared with the results achieved by system Pulse specialized for vibration analysis.

Słowa kluczowe

EN

digital image correlation; experimental modal analysis; random pattern; Modan3D

PL

korelacja obrazu cyfrowego; eksperymentalna analiza modalna; Modan3D

• Wydawca: Oficyna Wydawnicza Politechniki Białostockiej
• Czasopismo: Acta Mechanica et Automatica
• Rocznik: 2014
• Tom: Vol. 8, no. 1
• Strony: 22--26
• Opis fizyczny: Bibliogr. 10 poz., rys., tab., wykr.

Twórcy

autor

Hagra M.

• Faculty of Mechanical Engineering, Department of Applied Mechanics and Mechatronics, Technical University of Košice, Letná 9, 042 00 Košice, Slovakia

autor

Schrötter M.

• Faculty of Mechanical Engineering, Department of Applied Mechanics and Mechatronics, Technical University of Košice, Letná 9, 042 00 Košice, Slovakia

autor

Lengvarsky P.

• Faculty of Mechanical Engineering, Department of Applied Mechanics and Mechatronics, Technical University of Košice, Letná 9, 042 00 Košice, Slovakia

Bibliografia

• 1. Allemangr R. J., Brown L. (2006), A Complete Review of the Complex Mode Indicator Function (CMIF) with Applications, International Conference on Noise and Vibration Engineering, ISMA.
• 2. Brandt A. (2011), Noise and Vibration Analysis: Signal Analysis and Experimental Procedures, John Wiley & Sons, Ltd., United Kingdom.
• 3. Chen F., Chen X., Xie X., Feng X., Yang L. (2013), Full-field 3D measurement using multi-camera digital image correlation system, Optics and Lasers in Engineering, Vol. 51, No. 9, 1044-1052.
• 4. Herbst C., Splitthof K., Ettemeyer A. (2005), New Features in Digital Image Correlation Techniques, SAE Technical Paper 2005-01-0897.
• 5. Huňady R., Hagara M., Schrötter M. (2012), Using High-speed Digital Image Correlation to Determine the Damping Ratio, Procedia Engineering, Vol. 48, 242-249.
• 6. Madej J., Sitek M (2011), Modal and frequency analysis of electrovibrator kit for different configuration of activators (in Polish), Acta Mechanica et Automatica, Vol. 5, No. 3, 87-90.
• 7. Trebuňa F., Hagara M. (2014), Experimental modal analysis performed by high-speed digital image correlation system, Measurement: Journal of the International Measurement Confederation, Vol. 50, No. 1, 78-85.
• 8. Trebuňa F., Huňady R., Bobovský Z., Hagara M. (2013), Results and Experiences from the Application of Digital Image Correlation in Operational Modal Analysis, Acta Polytechnica Hungarica, Vol. 10, No. 5, 159-174.
• 9. Trebuňa F., Šimčák F. (2007), Handbook of experimental mechanics (in Slovak), TypoPress, Kosice, Slovakia.
• 10. Trebuňa F., Šimčák F., Huňady R. (2012), Vibration and modal analysis of mechanical systems (in Slovak), Technical University of Kosice, Slovakia.