Dynamic Crack Branching—A Photoelastic Evaluation

M Ramulu; AS Kobayashi; BS-J Kang

doi:10.1520/STP32553S

SYMPOSIA PAPER Published: 01 January 1984

STP32553S

Dynamic Crack Branching—A Photoelastic Evaluation

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A necessary and sufficient condition for crack branching based on a crack branching stress intensity factor, K_Ib, accompanied by a minimum characteristic distance of r_c is proposed. This crack branching criterion is evaluated by dynamic photoelastic experiments involving crack branching of six single-edged notch specimens and six wedge-loaded rectangular double cantilever beam specimens. Consistent crack branching at K_Ib = 2.04 MPa√m and r_c = 1.3 mm verified this crack branching criterion. The crack branching angle predicted by this crack branching criterion agreed well with those measured in the crack branching experiments.

Author Information

Ramulu, M

University of Washington, Seattle, Wash.

Kobayashi, AS

University of Washington, Seattle, Wash.

Kang, BS-J

University of Washington, Seattle, Wash.

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Details

Developed by Committee: E08

Pages: 130–148

DOI: 10.1520/STP32553S

ISBN-EB: 978-0-8031-4900-7

ISBN-13: 978-0-8031-0208-8

Dynamic Crack Branching—A Photoelastic Evaluation

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