Damage Progression in Stitched Composites Containing Circular Hole under Fatigue Loads

Abstract

Damage progression of stitched composites containing 6.35-mm circular holes subjected to cyclic load was experimentally studied. Fatigue tests were carried out using servo-hydraulic machine (Instron 8802) under sinusoidal tension control with load ratio of R = 0.1 and frequency of 2 Hz. Maximum load (S max) in the sinusoidal pattern was defined as a fraction of static ultimate tensile strength (UTS). Results showed that static failure mode of stitched composites was localized fracture, whilst fatigue failure mode was mainly delamination. Damage types and damage progression mechanism in stitched composites during fatigue tests were elucidated. Relationship between stiffness and projected delamination area was empirically established.

Department(s)

Mechanical and Aerospace Engineering

International Standard Book Number (ISBN)

978-161782013-7

Document Type

Article - Conference proceedings

Document Version

Citation

File Type

text

Language(s)

English

Rights

© 2025 DEStech Publications Inc., All rights reserved.

Publication Date

01 Dec 2010

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