PSI - Issue 14

Shashidhar Naik H. G. et al. / Procedia Structural Integrity 14 (2019) 900–906 Shashidhar Naik H. G. et.al./ Structural Integrity Procedia 00 (2018) 000–000

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0 0.5 1 1.5 2 2.5 3 0 10 20 30 40 50 60 70 80 90 100 SERR values Diameter of delamination Combined SERR plot

SERR in Mode I

SERR in Mode II

SERR in Mode III

Total SERR

Eff. SERR

Figure 5. Combined SERR plot across all delamination sizes

0 0.5 1 1.5 2 2.5 3 3.5 0 10 20 30 40 50 60 70 80 90 100 G T /G C values Diameter of delamination G T /G C GT/GC

Figure 6. G T /G c plot across all delamination sizes

4. Conclusion The values of SERR obtained in shearing mode (Mode III delamination) during the analyses, is predominant over to the other modes of failure. From the contact stress results obtained, it is inferred that the shear stresses in Mode II and Mode III play a vital role in propagation of delamination. Therefore, it can be concluded that for the chosen material and the loading condition, the delamination size must be quite substantial in the studied fiber-metal interface for the structure to fail. Acknowledgements Authors wish to take up this opportunity to thank and acknowledge Prof. B. Dattaguru for his kind support and guidance. Also, authors would like to thank Ms. Swathi S., Project Officer, IIT Madras for her unbiased reviews and inputs.