SYMPOSIA PAPER Published: 01 January 1990

Mechanics of Instability-Related Delamination Growth


Local buckling of a delaminated group of plies can lead to high interlaminar stresses and delamination growth. The mechanics of instability-related delamination growth (IRDG) had been described previously for the through-width delamination. This paper uses the results of finite-element analyses to gain insight into the mechanics of IRDG for the embedded delamination subjected to either uniaxial or axisymmetric loads. This insight is used to explain the dramatic differences in strain energy release rates observed for the through-width delamination, the axisymmetrically loaded embedded delamination, and the uniaxially loaded embedded delamination.

Author Information

Whitcomb, JD
National Aeronautics and Space Administration, Langley Research Center, Hampton, VA
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Developed by Committee: D30
Pages: 215–230
DOI: 10.1520/STP24113S
ISBN-EB: 978-0-8031-5120-8
ISBN-13: 978-0-8031-1287-2