Damage Initiation and Growth in Notched Laminates Under Reversed Cyclic Loading

CE Bakis; HR Yih; WW Stinchcomb; KL Reifsnider

doi:10.1520/STP10409S

SYMPOSIA PAPER Published: 01 January 1989

STP10409S

Damage Initiation and Growth in Notched Laminates Under Reversed Cyclic Loading

Source

The initiation and growth of fatigue damage in notched Cycom AS4/1808 graphite/epoxy laminates were investigated experimentally. Two layups, (0/45/90/−45)_s4 and (0/45/0/−45)_s4, provided contrasting responses to the fully reversed fatigue loads. Full-field strains and stresses surrounding the circular notch were evaluated at several stages of fatigue life with the photoelastic coating and adiabatic thermal emission measurement techniques and were related to the corresponding damage state and residual strength, stiffness, and life.

Author Information

Bakis, CE

Virginia Polytechnic Institute and State University, Blacksburg, VA

Yih, HR

Virginia Polytechnic Institute and State University, Blacksburg, VA

Stinchcomb, WW

Virginia Polytechnic Institute and State University, Blacksburg, VA

Reifsnider, KL

Virginia Polytechnic Institute and State University, Blacksburg, VA

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Details

Developed by Committee: E08

Pages: 66–83

DOI: 10.1520/STP10409S

ISBN-EB: 978-0-8031-5075-1

ISBN-13: 978-0-8031-1190-5

Damage Initiation and Growth in Notched Laminates Under Reversed Cyclic Loading

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