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Strength of Materials

, Volume 51, Issue 4, pp 624–632 | Cite as

Effect of Drilling-Induced Delamination on Buckling Behavior of Open Hole Composite Laminate Specimens Under Compressive Loading

  • Q. F. Duan
  • S. X. Li
  • P. H. Song
  • W. Cheng
  • D. F. CaoEmail author
  • H. X. HuEmail author
Article
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The effect of drilling-induced delamination defects on the buckling behavior of open-hole composite laminates specimens is experimentally studied. PTFE (polytetrafluoroethylene) films are inserted into the ply interface around the hole as artificial delaminations to quantify the drilling-induced one. Artificial delaminations in two shapes (circular and square) and three sizes (10, 15, and 20 mm) are designed. The effect of various drilling-induced delaminations on local buckling, local buckling-induced delamination and general buckling are examined and evaluated using an ultrasonic C-Scan UPK-T48-HS and the digital image measurement system (VIC-3D). Quantitative information, including critical buckling loads, are provided to assess the effect of drilling-induced delamination on the compressive behavior of composite laminates with open holes. The results are expected to give an insight into the assessment of the damage tolerance of the interstage design and establishment of appropriate thresholds for a safety inspection.

Keywords

drilling defect buckling open hole digital image correlation (DIC) C-scan 

Notes

Acknowledgments

This research work was supported by the Fundamental Research Funds for the Central Universities (WUT: 2018III066GX) and China Postdoctoral Science Foundation (No. 2018M632933).

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Copyright information

© Springer Science+Business Media, LLC, part of Springer Nature 2019

Authors and Affiliations

  1. 1.State Key Laboratory of Materials Synthesis and ProcessingWuhan University of TechnologyWuhanChina
  2. 2.School of ScienceWuhan University of TechnologyWuhanChina
  3. 3.Structure Department, The First Aircraft InstituteYanliangChina
  4. 4.Institute of Advanced Materials and Manufacturing TechnologyWuhan University of TechnologyWuhanChina

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