Biaxial fatigue damage in quasi isotropic laminates

Travis Skinner, Siddhant Datta, Aditi Chattopadhyay, Asha Hall

Research output: Chapter in Book/Report/Conference proceedingConference contribution

2 Scopus citations


An investigation into the biaxial fatigue damage mechanisms in quasi isotropic carbon fiber reinforced polymer (CFRP) composite laminates has been conducted. The goal is to capture early stage damage and obtain an improved understanding of the physics of damage and failure under complex multiaxial loading in anisotropic laminates. Specimen geometry is designed using an optimization technique and digital image correlation (DIC) is performed during static biaxial load tests to validate specimen design. To understand the propagation of damage from the micro-to the macroscale, the fractured surfaces are analyzed during various stages of fatigue using scanning electron microscope (SEM) assisted fractography, and a high-resolution camera is used to capture real time macroscale damage. Specimen stiffness degradation is measured and correlated to the micro-and macroscale damage mechanisms and the biaxial fatigue loading parameters. The results provide critical understanding of the initiation and propagation of damage mechanisms in quasi isotropic laminates under biaxial fatigue.

Original languageEnglish (US)
Title of host publicationAIAA Scitech 2020 Forum
PublisherAmerican Institute of Aeronautics and Astronautics Inc, AIAA
ISBN (Print)9781624105951
StatePublished - 2020
EventAIAA Scitech Forum, 2020 - Orlando, United States
Duration: Jan 6 2020Jan 10 2020

Publication series

NameAIAA Scitech 2020 Forum
Volume1 PartF


ConferenceAIAA Scitech Forum, 2020
Country/TerritoryUnited States

ASJC Scopus subject areas

  • Aerospace Engineering


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