Analysis of ply-wise failure of composite laminates with open holes

Fatih Daricik

doi:10.1515/mt-2021-2090

Article

Analysis of ply-wise failure of composite laminates with open holes

Fatih Daricik
Fatih Daricik, born in 1982, received his PhD from Sivas Cumhuriyet University, Turkey in Mechanical Engineering in 2017. He is currently Assistant Professor in the Mechanical Engineering Department of Alanya Alaaddin Keykubat University in Antalya, Turkey. His research interests include experimental and numerical determination of failure and fracture mechanics of fiber-reinforced laminated composites.

Published/Copyright: June 8, 2022

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From the journal Materials Testing Volume 64 Issue 6

Abstract

Fiber-reinforced composite materials may contain open holes according to the needs of service conditions. This research aims to determine the effect of the shape and size of the open-holes on the compressive strength of the carbon fiber/epoxy laminated composite material. The mechanical properties and the open-hole compressive failure of the laminate were introduced first. The experimental study was simulated with Finite element analysis and the difference between the experimental and numerical methods used to determine the compressive strength were compared. The results showed that the failure starts with matrix shear failure at the interface between the consecutive plies that have the greatest angle difference in fiber directions. The angle difference between the load and the reinforcement fibers is also important in determining the interface where the damage occurs. In terms of compressive strength, the shape and orientation of the holes are at least as important as the size of the holes.

Keywords: failure mechanisms; laminated composite; open-hole compressive strength; shape effect; size effect

Corresponding author: Fatih Daricik, Department of Mechanical Engineering, Alanya Alaaddin Keykubat University, 07425 Alanya, Antalya, Turkey, E-mail: fatih.daricik@alanya.edu.tr

About the author

Fatih Daricik

Fatih Daricik, born in 1982, received his PhD from Sivas Cumhuriyet University, Turkey in Mechanical Engineering in 2017. He is currently Assistant Professor in the Mechanical Engineering Department of Alanya Alaaddin Keykubat University in Antalya, Turkey. His research interests include experimental and numerical determination of failure and fracture mechanics of fiber-reinforced laminated composites.

Author contribution: All the authors have accepted responsibility for the entire content of this submitted manuscript and approved submission.
Research funding: None declared.
Conflict of interest statement: The authors declare no conflicts of interest regarding this article.

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Published Online: 2022-06-08

Published in Print: 2022-06-27

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https://doi.org/10.1515/mt-2021-2090

Keywords for this article

failure mechanisms; laminated composite; open-hole compressive strength; shape effect; size effect