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Experimental Mechanics

, Volume 23, Issue 4, pp 431–437 | Cite as

Further studies on dynamic crack branching

  • M. Ramulu
  • A. S. Kobayashi
  • B. S. J. Kang
  • D. B. Barker
Article

Abstract

The newly derived dynamic-crack-branching criterion with its modifications is verified by the dynamicphotoelastic results of dynamic crack branchings in thinpolycarbonate, single-edged crack-tension specimens. Successful crack branching was observed in four specimens and unsuccessful branching in another. Crack branching consistently occurred when the necessary conditions ofK I =K I b =3.3 MPa\(\sqrt m\) and the sufficiency condition ofr o =r c =0.75 mm were satisfied simultaneously. In the unsuccessful branching test, the necessary condition was not satisfied sinceK I was always less thanK I b .

Keywords

Mechanical Engineer Fluid Dynamics Dynamic Crack Sufficiency Condition Successful Crack 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Society for Experimental Mechanics, Inc. 1983

Authors and Affiliations

  • M. Ramulu
    • 1
  • A. S. Kobayashi
    • 1
  • B. S. J. Kang
    • 1
  • D. B. Barker
    • 2
  1. 1.Department of Mechanical EngineeringUniversity of WashingtonSeattleUSA
  2. 2.Department of Mechanical EngineeringUniversity of MarylandCollege ParkUSA

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