Abstract
A technique for the determination of stress intensity factors from caustics by means of an interactive image processing system has been developed where a multipoint overdeterministic data reduction technique makes use of a number of data points along the recorded caustic. The method requires minimum manual input from the analyst. The selection of data points along the experimentally recorded caustic curve for the analysis is done automatically. Results of this procedure are checked by comparing for acceptable coincidence the numerically generated caustic on the basis of the result of the iterative data reduction technique with the experimentally recorded caustic.
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References
P. Manogg. Anwendwig der Schattenoptik zur Untersuchung des Zerreißvorganges von Platten.PhD Thesis, Universität Freiburg i. B., Freiburg, Germany, 1964.
P. Manogg. Investigation of the rupture of a Plexiglas plate by means of an optical method involving high speed filming of the shadows originating around holes drilling in the plate. Int. J. Fracture Mechanics, 2:604–613, 1966.
P.S. Theocaris. Local yielding around a crack tip in Plexiglas. J. Applied Mechanics, 37:409–415, 1970.
P.S. Theocaris. Reflected shadow method for the study of constrained zones in cracked plates. Applied Optics, 10(10):2240–2247, 1971.
J. Beinert and J.F. Kalthoff. Experimental determination of dynamic stress intensity factors by the method of shadow patterns. Mechanics of Fracture, 7:281–330, 1981.
H.P. Rossmanith. The method of caustics for plane elasticity problems. Elasticity, 12:193–200, 1982.
S. Suzuki and S. Fukuchi. Some experiments on measurement of dynamic stress intensity factor of fast propagating cracks. This volume.
L.B. Freund and A.J. Rosakis. The influence of transient effects on the asymptotic crack tip field during dynamic crack growth. This volume.
P. Manogg. Die Lichtablenkung durch eine elastisch beanspruchte Platte und die Schattenfiguren von Kreis und Rißkerbe. Glastechnische Berichte, 39:323–329, 1966.
R. Podleschny and J.F. Kalthoff. Improved methodology for the determination of fracture mechanics shear-(mode-2)-stress intensity factors by means of the shadow optical method of caustics. In: 13.GESA-Symposium, pages 323-335, Bochum, Germany, 1990.
J.F. Kalthoff. The shadow optical methods of caustics. In: A.S. Kobayashi (Editor), Handbook on Experimental Mechanics, chapter 9, pages 430-500. Prentice Hall, Inc., 1987.
H.P. Rossmanith. The method of caustics. In: Wang W.C. (Editor), Advanced Photomechanics, pages 1-450. Dynamic Engineering Institute, National Tsing-Hua University, Hsinchu, Taiwan, 1988.
G.R. Irwin. Lecture Notes on Fracture Mechanics. Dept. of Mechanical Engineering, University of Maryland, 1979.
H.P. Rossmanith. Determination of stress intensity factors by the dynamic method of caustics for optically isotropic materials. Ingenieur-Archiv, 48:363–381, 1979.
H. Nigam and A. Shukla. Comparison of the techniques of transmitted caustics and photoelasticity as applied to fracture. Experimental Mechanics, pages 123-130, 1988.
L.B. Freund. Dynamic Fracture Mechanics. Cambridge University Press, 1990.
R.E. Knasmillner. Vielpunktmethode zur Bestimmung des Spannungsintensitätsfaktors mit Hilfe der Methode der Kaustik. ÖIAZ, 131:318–320, 1986.
H.P. Rossmanith and R.E. Knasmillner. An interactive caustic-based method of stress intensity factor determination. In: D. Firrao (Editor), Proc. ECF-8, volume 2, pages 1093-1098. EMAS, October 1990.
H.P. Rossmanith and R.E. Knasmillner. Interaction of Rayleigh waves with surface breaking and embedded cracks. In: Y. Kanto H. Homma (Editor), Proc. of OJI Int. Seminar on Dynamic Fracture, pages 236-262, Toyohashi University of Technology, Japan, 1989.
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© 1991 Elsevier Science Publishers Ltd
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Rossmanith, H.P., Knasmillner, R.E. (1991). Recent Advances in Data Processing from Caustics. In: Rossmanith, H.P., Rosakis, A.J. (eds) Dynamic Failure of Materials. Springer, Dordrecht. https://doi.org/10.1007/978-94-011-3652-5_18
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DOI: https://doi.org/10.1007/978-94-011-3652-5_18
Publisher Name: Springer, Dordrecht
Print ISBN: 978-1-85166-665-2
Online ISBN: 978-94-011-3652-5
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