Zastosowanie metod wizyjnych do monitorowania stanu konstrukcji

• Autorzy: Uhl T. , Kohut P. , Holak K.

Warianty tytułu

EN

Application of vision techniques for construction state monitoring

• Języki publikacji: PL

Abstrakty

PL

W pracy dokonano przeglądu dostępnych na rynku trójwymiarowych wizyjnych systemów pomiarowych. Przedstawiono koncepcję nowego systemu wizyjnego do pomiaru deformacji i struktury obiektów inżynierii lądowej oraz pomiaru przebiegów drgań, oraz wizualizacji operacyjnych postaci drgań. W artykule przedstawiono wstępne wyniki testów metody pomiaru ugięcia konstrukcji z wykorzystaniem współczynnika korelacji obrazów na stanowisku laboratoryjnym oraz na obiektach rzeczywistych.

EN

Review of 3D vision measurement systems available on the market is presented in the paper. A concept of new vision systems dedicat-ed to measurements of deformation and geometry of civil engineer-ing objects as well as vibrations of structures and visualization of operational shape modes is introduced. The first system described in the paper enables in-plane defection course to be obtained by means of homography matrix and digital image correlation. As a result the deflection field can be computed from two images of the structure acquired from two different points in space. Epipolar geometry methods were introduced in order to provide 3D deformation's of the structures. The second system enables obtaining amplitudes of vibrations of analyzed scene objects along with their structure based upon data derived from one or two calibrated digital fast cameras. For this purpose techniques based on epipolar geometry are employed. Courses of vibrations computed by the system can be used as data for experimental modal analysis. Mode shapes visualization can be carried out by a high resolution digital camera and developed lock-in techniques. Results of preliminary tests of 2D vision deflection measurement method using digital image correlation coefficient in the laboratory as well as on the real construction are presented.

Słowa kluczowe

PL

współczynnik korelacji obrazów cyfrowych; trójwymiarowe wizyjne techniki pomiarowe; pomiar odkształceń; pomiar drgań

EN

digital image correlation; 3D measurement techniques; deformation measurements; vibration measurements

• Wydawca: Wydawnictwo PAK
• Czasopismo: Pomiary Automatyka Kontrola
• Rocznik: 2010
• Tom: R. 56, nr 6
• Strony: 569--572
• Opis fizyczny: Bibliogr. 17 poz., rys., schem.

Twórcy

autor

Uhl T.

autor

Kohut P.

autor

Holak K.

• Akademia Górniczo-Hutnicza, Katedra Robotyki i Mechatroniki, Al. Mickiewicza 30, 30-059 Kraków,

Bibliografia

• [1] Lee, M., Precht, M., Tyson, J., Schmidt, T.: Application of 3D Measurement System with CCD Camera in Microelectronics, Advanced Packaging, November 2003.
• [2] Schmidt, T., Tyson, J., Galanulis, K.: Full-Field Dynamic Displacement and Strain Measurement Using Advanced 3D Image Correlation Photogrammetry, Experimental Techniques, Vol. 27, No 3, pp. 41-44, May/June 2003.
• [3] Schmidt, T., Tyson, J., Galanulis, K.: Dynamic Strain Mea-surement Using Advanced 3D Photogrammetry, Proceedings of IMAC XXI, Orlando, FL, Feb. 2003.
• [4] Bergmann D., Ritter R.: 3D deformation measurement in small areas based on grating method and photogrammetry. Proceedings of Society of Photo-Optical Instrumentation Engineers (SPIE) Conference, Optical Inspection and Micromeasurements, vol. 2782, 1996, pp. 212-223.
• [5] Steinchen, W. & Yang, L.: Digital Shearography, Theory and Application of Digital Speckle Pattern Shearing Interferometry, SPIE Press, 2003.
• [6] Tyson, J.: Dynamic Deformation Analysis with Pulsed ESPI, Society of Experimental Mechanics Conference, June 1999.
• [7] Tyson, John: Portable Interferometry Systems for Rapid NDI, USAF Aircraft Structural Integrity Conference, Dec. 1998.
• [8] Uhl T., Kohut P., Holak K.: Zastosowanie korelacji obrazów do pomiaru zmian stanu konstrukcji. Wybrane zagadnienia analizy modalnej konstrukcji mechanicznych, s. 330-331, Kraków, grudzień 2007.
• [9] Kohut P., Holak K., Uhl T.: Application of image correlation for SHM of steel structures, Structural Health Monitoring 2008: proceedings of the fourth European workshop, Cracow, Poland, , July 2-4 2008, pp. 1257-1264.
• [10] Uhl T., Kohut P., Holak K..: Diagnozowanie konstrukcji z zastosowaniem korelacji obrazu. Diagnostyka, 3/2007, pp. 15–24.
• [11] Uhl T., Kohut P., Holak K.: Construction deflection examination by means of correlation coefficient, Proceedings of the 13th School of Modal Analysis, Cracow, Poland 2009.
• [12] Uhl T., Kohut.P, Szwedo M., Holak K.: Static and dynamic optical measurement in SHM of civil structures, Proceeding of the 7th international workshop on Structural Health Monitoring, DESTech publications, Lancaster 2009.
• [13] Uhl T., Kohut P., Holak K.: Image correlation techniques in structures deflection measurement, Proceedings of the international conference on Experimental Vibration Analysis for Civil Engineering Structures EVACES’09. Dolnośląskie Wydawnictwo Edukacyjne, Wrocław 2009.
• [14] Kohut P., Kurowski P.: The integration of vision system and modal analysis for SHM applications, Proc. Of the IMAC-XXIV a conference and exposition on structural dynamics, January 30-February 02 St. Louis, 2006, pp. 1-8.
• [15] Holak K, Kohut P., Cieślik J.: Application of three-dimensional vision techniques in mechanical vibrations measurement (in polish), Proceedings of the 8th Workshop of Mechatronics Design, 2008, pp. 63-70.
• [16] Kohut P., Kurowski P.: The integration of vision system and modal analysis for SHM applications. Proc. Of the IMAC-XXIV a conference and exposition on structural dynamics, January 30-February 02 St. Louis, 2006, pp. 1-8.
• [17] Kohut P. Giergiel M.: Optical measurement of amplitude of vibration of machine. Mechanics and Mechanical Engineering ; ISSN 1428-1511. - 2008 vol. 12 no 2 s. 147–156. - Bibliogr. s. 156.