Abstract
The dynamic crack curving criterion proposed by Ramulu and Kobayashi1 is based on a micro-mechanic model of continuous micro- flaw growth and coalescence in the vicinity of the moving crack tip. It is a dynamic extension of the crack curving criterion proposed by Streit and Finnie.2 When an off-axis micro-flaw connects with the crack tip, the crack is momentarily kinked or bifurcated. Figure 1 shows several attempts for a rapidly propagating crack to branch in a Homalite-100 plate. Also shown is a successful crack branching under presumably a favorable state of stress.
Access this chapter
Tax calculation will be finalised at checkout
Purchases are for personal use only
Preview
Unable to display preview. Download preview PDF.
References
M. Ramulu and A. S. Kobayashi, Dynamic Crack Curving - A Pho- toelastic Evaluation, to be published in Experimental Mechanics.
R. Streit and I. Finnie, An Experimental Investigation of Crackpath Stability, Exp. Mech., 20:17, (1980).
M. Ramulu, A. S. Kobayashi and B. S.-J. Kang, Dynamic Crack Branching - A Photoelastic Evaluation, presented at 15th National Symposium on Fracture Mechanics, University of Maryland, July 7–9, (1982).
M. Ramulu, A. S. Kobayashi and B. S.-J. Kang, Dynamic Crack Curving and Branching in Line-Pipe, to be presented at 1982 ASME WAM, PVP Division, Phoenix, AZ, November 14–19, (1982)
E. H. Yoffe, The Moving Griffith Crack, Phil. Mg., 42:739, (1951).
J. W. Craggs, On the Propagation of a Crack in an Elastic Brittle Material, J. Mech. and Phy. Solids, 8:66, (1960).
G. R. Irwin, J. W. Dally, T. Kobayashi, W. L. Fourney, M. J. Etheridge and H. P. Rossmanith, On the Determination of the a-K Relationships for Birefrigent Polymers, Exp. Mech., 19:121 (1979).
J. Congleton, Practical Application of Crack Branching Mea surements, Dynamic Crack Propagation, ed. by G. C. Sih, Noord- hoff Publ., pp. 427–438 (1973).
J. Eftis, N. Subramanian and H. Liebowitz, Crack Border Stress and Displacement Equations Revisited, Eng. Frac. Mech., 9:189 (1977).
J. Eftis, N. Subramanian and H. Liebowitz, Biaxial Load Effects on the Crack Border Elastic Strain Energy and Strain Energy Release Rate, Eng. Frac. Mech., 9:753 (1977).
Y. J. Sun, M. Ramulu, A. S. Kobayashi and B. S.-J. Kang, Further Studies on Dynamic Crack Curving, Developments in Theoretical and Applied Mechanics, Vol. XI, ed. by T. J. Chang and G. R. Karr, University of Alabama in Huntsville, pp. 203–218, (1982).
A. S. Kobayashi and C. F. Chan, A Dynamic Photoelastic Analysis of Dynamic-Tear-Test Specimen, Exp. Mech., 18:176 (1976).
A. S. Kobayashi and M. Ramulu, Dynamic Stress Intensity Factors for Unsymmetric Dynamic Isochromatics, Exp. Mech., 21:41 (1981).
T. Kobayashi and J. W. Dally, The Relation Between Crack Velocity and Stress Intensity Factor in Birefringent Polymers, Fast Fracture and Crack Arrest, ed. by G. T. Hahn and M. F. Kanninen, ASTM STP 627, 257 (1977).
J. W. Dally, Dynamic Photoelastic Studies of Fracture, Exp. Mech., 19:349 (1979).
A. S. Kobayashi, B. G. Wade, W. B. Bradley and S. T. Chiu, 1974, Crack Branching in Fracturing Homalite-100 Plates, Eng. Fract. Mech. 6:81 (1974
Author information
Authors and Affiliations
Editor information
Editors and Affiliations
Rights and permissions
Copyright information
© 1983 Plenum Press, New York
About this chapter
Cite this chapter
Ramulu, M., Kobayashi, A.S. (1983). Dynamic Crack Curving and Crack Branching. In: Mescall, J., Weiss, V. (eds) Material Behavior Under High Stress and Ultrahigh Loading Rates. Sagamore Army Materials Research Conference Proceedings, vol 29. Springer, Boston, MA. https://doi.org/10.1007/978-1-4613-3787-4_12
Download citation
DOI: https://doi.org/10.1007/978-1-4613-3787-4_12
Publisher Name: Springer, Boston, MA
Print ISBN: 978-1-4613-3789-8
Online ISBN: 978-1-4613-3787-4
eBook Packages: Springer Book Archive