Ultrasonic testing of grain distortion direction in cold formed aluminium profile

• Autorzy: Keran Z. , Mihaljević M. , Runje B. , Markučič D.

Identyfikatory

DOI

10.1016/j.acme.2016.11.003

• Języki publikacji: EN

Abstrakty

EN

Cold deformation process of metals causes distortion of crystalline structure. When a material is formed, the grains are usually distorted and elongated in one or more directions which make the material anisotropic. Anisotropy can be defined as a difference in a material's physical or mechanical properties in different directions of taking of testing samples. In exploitation, it is very important to recognize the direction of grain elongation so that the best orientation of working part can be chosen. For that purpose ultrasonic testing is used. The ultrasonic velocity of the material is determined by using a digital oscilloscope under condition that thickness of the material is known. Testing shows the difference in wave velocity for different orientations of grain structure. In order to determine whether there is a significant difference in the ultrasonic velocity, the measurement results were statistically analyzed and graphically presented. The results are verified by performing the same measurement procedure on annealed homogenous testing samples. The result of this work leads to a non-destructive, simplified way of anisotropy recognition, without more expensive, destructing, testing by cutting out a large number of testing samples.

Słowa kluczowe

EN

cold deformation; grain distortion; mechanical properties; ultrasound velocity

PL

odkształcenie; właściwości mechaniczne; ultradźwięki

• Wydawca: Springer ; Wrocław University of Science and Technology
• Czasopismo: Archives of Civil and Mechanical Engineering
• Rocznik: 2017
• Tom: Vol. 17, no. 2
• Strony: 375--381
• Opis fizyczny: Bibliogr. 14 poz., rys., tab., wykr.

Twórcy

autor

Keran Z.

• Faculty of Mechanical Engineering and Naval Architecture, University of Zagreb, Ivana Lučića 5, 10000 Zagreb, Croatia

autor

Mihaljević M.

• Faculty of Mechanical Engineering and Naval Architecture, University of Zagreb, Ivana Lučića 5, 10000 Zagreb, Croatia

autor

Runje B.

• Faculty of Mechanical Engineering and Naval Architecture, University of Zagreb, Ivana Lučića 5, 10000 Zagreb, Croatia

autor

Markučič D.

• Faculty of Mechanical Engineering and Naval Architecture, University of Zagreb, Ivana Lučića 5, 10000 Zagreb, Croatia

Bibliografia

• [1] D. Pandey, S. Pandey, in: D. Dissanayake (Ed.), Ultrasonics: A Technique of Material Characterization, Acoustic Waves, InTech, 2010, http://dx.doi.org/10.5772/10153, Available from: http://www.intechopen.com/books/acoustic-waves/ ultrasonics-a-technique-of-material-characterization.
• [2] V. Krstelj, Ultrasonic Control, University of Zagreb, Faculty of Mechanical Engineering and Naval Architecture, Zagreb, 2003.
• [3] G.A. Alers, J.R. Neighbours, The elastic constants of zinc between 4.2 and 670 K, Journal of Physics and Chemistry of Solids 7 (1958) 58–64.
• [4] G.A. Alers, Use of sound velocity measurements in determining the Debye temperature of solids, in: W.P. Mason (Ed.), Physical Acoustics IIIB, Academic Press Inc., New York, 1965 1–42.
• [5] L.C. Lowrance, Industrial applications of ultrasound: a review-measurements, test and process control using low intensity ultrasound, IEEE Transactions on Sonics and Ultrasonics, SU-22 2 (1975) 71–101.
• [6] R.E. Green, Ultrasonic Investigation of Mechanical Properties, Academic Press, New York, 1973.
• [7] W.P. Mason, A. Rosenberg, Photon and electron drag coefficient in single crystal aluminium, Physical Review 151 (2) (1966) 434–441.
• [8] W.P. Mason, A. Rosenberg, Thermal and electronic attenuation and dislocation drag in hexagonal crystal cadmium, Journal of Acoustical Society America 45 (2) (1969) 470–475.
• [9] J. Krautkramer, H. Krautkramer, Ultrasonic Testing of Materials, Narosa Publishing House, New Delhi, India, 1993.
• [10] M.G.S. Ali, N.Z. Elsayed, A.M. Eid, Ultrasonic attenuation and velocity in steel standard reference blocks, Romanian Journal of Acoustics and Vibration 10 (2013) 33–38.
• [11] C. Hakan Gur, O.B. Tuncer, Characterization of microstructural phases of steels by sound velocity measurement, Materials Characterization 55 (2005) 160–166.
• [12] V.L. Araújo Freitas, V.H.C. Albuquerque, E. Macedo Silva, A. Almeida Silvaa, R.S.J.M. Tavares, Nondestructive characterization of microstructures and determination of elastic properties in plain carbon steel using ultrasonic measurements, Ultrasonics 52 (2012) 117–124.
• [13] F.S. Crawford Jr., Waves, Berkeley Physics Course, vol. 3, Mcgraw-Hill Book Company, Berkley, 1968.
• [14] EN 12223:2000, Non-destructive testing. Ultrasonic examination. Specifications for calibration block No.1.

Uwagi

PL

Opracowanie ze środków MNiSW w ramach umowy 812/P-DUN/2016 na działalność upowszechniającą naukę (zadania 2017)