Extended evaluation of Erichsen cupping test results by means of laser speckle

• Autorzy: Kocańda A. , Jasiński C.

Identyfikatory

DOI

10.1016/j.acme.2015.10.007

• Języki publikacji: EN

Abstrakty

EN

Erichsen cupping test has usually been used to determine the height of the cup at the moment of sheet metal fracture, defined as the Erichsen Number IE. The paper presents a proposal of using Erichsen cupping test to determine the additional parameter – the height of the cup LN-IE at the moment of localized necking in sheet metal, which usually precedes fracture of sheet metal. For this purpose, a method of localized necking detection was developed. It is based on the phenomenon of laser speckle. The results of height measurements were presented for three different grades of sheet metals used in the automotive industry: 5754 H22 aluminum alloy, DC04 deep drawing steel, and Dogal 800DP high strength steel. The differences in cup heights at the moments of localized necking (LN-IE) and fracture (IE) of the tested sheet metals were in the range of 0–8%.

Słowa kluczowe

EN

Erichsen cupping test; laser speckle; localized necking; fracture; LN-IE

PL

pęknięcie; blacha; przemysł motoryzacyjny

• Wydawca: Springer ; Wrocław University of Science and Technology
• Czasopismo: Archives of Civil and Mechanical Engineering
• Rocznik: 2016
• Tom: Vol. 16, no. 2
• Strony: 211--216
• Opis fizyczny: Bibliogr. 10 poz., rys., tab., wykr.

Twórcy

autor

Kocańda A.

• Warsaw University of Technology, Faculty of Production Engineering, Department of Metal Forming and Foundry, 85 Narbutta St., 02-524 Warsaw, Poland

autor

Jasiński C.

• Warsaw University of Technology, Faculty of Production Engineering, Department of Metal Forming and Foundry, 85 Narbutta St., 02-524 Warsaw, Poland

Bibliografia

• [1] A.M. Erichsen, Process and apparatus for testing metal sheets and plates, GB Patent no. 91228571 (A), 1913, (applied 1912-12- 11).
• [2] Erichsen cupping test, ISO standard 20482:2013.
• [3] Erichsen, Sheet Metal Testing Machine, Model 102, Technical Description.
• [4] A. Gavrus, M. Banu, E. Ragneau, C. Maier, An inverse analysis of the Erichsen test applied for the automatic identification of sheet materials behaviour, Engineering 2 (2010) 471–476.
• [5] F. Abbassi, T. Belhadj, S. Mistou, A. Zghal, Parameter identification of a mechanical ductile damage using Artificial Neural Networks in sheet metal forming, Materials and Design 45 (2013) 605–615.
• [6] C. Jasiński, A. Kocańda, Application of laser speckles to localized necking and cracking detection in Erichsen cupping test, Mechanical Review (Przegląd Mechaniczny), 9 (2014) 49–54.
• [7] H.J. Rabal, R.A. Braga, Dynamic Laser Speckle and Applications, CRC Press, Taylor & Francis Group, Boca Raton, London, New York, 2009.
• [8] I. Yamaguchi, K. Kobayashi, L. Yaroslavsky, Measurement of surface roughness by speckle correlation, Optical Engineering 43 (11) (2004) 2761.
• [9] S. Ulyanov, Laser speckle metrology: implication for biomedical diagnostics, Journal of X-Ray Science and Technology 11 (2003) 45–59, IOS Press.
• [10] R. Hofling, W. Osten, Speckle pattern correlation using digital image processing, Theoretical and Applied Mechanics (Mechanika Teoretyczna i Stosowana), 2 (26) (1988) 253–262.

Uwagi

PL

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