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Effect of various surface preparation techniques on the delamination properties of vacuum infused Carbon fiber reinforced aluminum laminates (CARALL): Experimentation and numerical simulation


Carbon fiber reinforced aluminum laminates (CARALL) are one of the aluminum based Fiber metal laminates (FMLs) which, due to their high strength to weight ratio and good impact resistance are greatly replacing aluminum alloys in aircraft structures. In this research work, interlaminate shear strength of Vacuum assisted resin transfer molding (VARTM) manufactured CARALL has been investigated. Numerical simulation model incorporated with real time material data has been developed to predict the delamination behavior of CARALL laminates. Standard CARALL specimens with different surface morphologies were prepared by electric discharge machining, mechanical, chemical and electrochemical surface treatments. T-peel tests were carried out according to standard ASTM D1876-08 to find out inter laminate shear strength. FMLs made out of mechanically, chemically and electrochemically cleaned metal sheets depicted high interlaminate shear strength. SEM micrographs of failed surfaces verify the high adhesive strength of epoxy. Developed numerical simulation model accurately predicts the delamination behavior of CARALL as observed during experimentation.

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Corresponding author

Correspondence to Zeeshan Anjum.

Additional information

Recommended by Associate Editor Seung-Hwan Chang

Zeeshan Anjum completed his B.Sc. in Mechanical Engineering from University of AJK in 2011 and M.Sc. degree in Applied Mechanics and Design from University of Engineering and Technology Taxila, Pakistan in 2014. He is currently doing Ph.D. from the same university.

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Khan, F., Qayyum, F., Asghar, W. et al. Effect of various surface preparation techniques on the delamination properties of vacuum infused Carbon fiber reinforced aluminum laminates (CARALL): Experimentation and numerical simulation. J Mech Sci Technol 31, 5265–5272 (2017).

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  • FMLs
  • Numerical simulation
  • Surface treatments
  • T-peel