Combined loading fracture trajectories of viscoelastic materials.
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Author
Marinshaw, Stephen Alfred Jr.
Date
1973-06Advisor
Lindsey, G.H.
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Show full item recordAbstract
The critical stress intensity factors and fracture
trajectories for both filled and unfilled viscoelastic plane
stress specimens were experimentally determined by
controlled crack elongation. Fracture testing included
combined displacement loadings both of single and
bi-material specimens with initial cracks located in each
material and at the bi-material interface.
The feasibility of trajectory prediction using an
elastic linear-strain finite-element analysis was
investigated. Techniques for adapting the elastic model
grid patterns to predict viscoelastic trajectories were
developed.
Measured trajectories correlated well with the
directions of maximum principal stress as determined by the
finite-element solution of a blunt crack- tip model.
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This publication is a work of the U.S. Government as defined in Title 17, United States Code, Section 101. Copyright protection is not available for this work in the United States.Collections
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