Applied Composite Materials

, Volume 25, Issue 2, pp 365–379 | Cite as

Analysis of Mode I and Mode II Crack Growth Arrest Mechanism with Z-Fibre Pins in Composite Laminated Joint

  • N. Jeevan Kumar
  • P. Ramesh Babu


This paper presents the numerical study of the mode I and mode II interlaminar crack growth arrest in hybrid laminated curved composite stiffened joint with Z-fibre reinforcement. A FE model of hybrid laminated skin-stiffener joint reinforced with Z-pins is developed to investigate the effect of Z- fibre pins on mode I and mode II crack growth where the delamination is embedded inbetween the skin and stiffener interface. A finite element model was developed using S4R element of a 4-node doubly curved thick shell elements to model the composite laminates and non linear interface elements to simulate the reinforcements. The numerical analyses revealed that Z-fibre pinning were effective in suppressing the delamination growth when propagated due to applied loads. Therefore, the Z-fibre technique effectively improves the crack growth resistance and hence arrests or delays crack growth extension.


Mode-I delamination Mode-II delamination Mode-III delamination VCCT SERR Bridging mechanics Z-fiber pins 



This work is supported by Department of Mechanical Engineering, Osmania University, Hyderabad. The authors would like to acknowledge the Faculty for their constant support and encouragement.


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Copyright information

© Springer Science+Business Media B.V. 2017

Authors and Affiliations

  1. 1.Department of Mechanical Engineering, CMR Engineering College & Research ScholarOsmania UniversityHyderabadIndia
  2. 2.Osmania UniversityHyderabadIndia

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