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Improvement the impact damage resistance of composite materials by interleaving Polycaprolactone nanofibers

In this study, the impact response of glass/epoxy laminates interleaved by Polycaprolactone (PCL) nanofibers is considered. PCL is a thermoplastic polymer, which is a good choice for toughening epoxy-based composite. The impact tests were conducted on curved laminates and under 24 and 36J. | Improvement the impact damage resistance of composite materials by interleaving Polycaprolactone nanofibers Engineering Solid Mechanics 3 2015 21-26 Contents lists available at GrowingScience Engineering Solid Mechanics homepage www.GrowingScience.com esm Improvement the impact damage resistance of composite materials by interleaving Polycaprolactone nanofibers H. Saghafi T. Brugo G. Minak and A. Zucchelli Department of Industrial Engineering DIN Alma Mater Studiorum Universita di Bologna viale Risorgimento 2 40136 Bologna Italy ARTICLE INFO ABSTRACT Article history In this study the impact response of glass epoxy laminates interleaved by Polycaprolactone Received September 6 2014 PCL nanofibers is considered. PCL is a thermoplastic polymer which is a good choice for Accepted 22 November 2014 toughening epoxy-based composite. The impact tests were conducted on curved laminates and Available online under 24 and 36J. The results showed that the effect of interleaving on impact parameters such 23 December 2014 as maximum load is negligible but on the other hand could decrease damaged area Keywords Nanofibers significantly. By inserting 30 m of PCL nanofibers between each layer of laminate the Electrospinning damaged area decreased about 27 . Impact loading Interleaving 2015 Growing Science Ltd. All rights reserved. 1. Introduction Compared with more traditional materials such as metals and ceramics fiber reinforced composites have several specific features such as high stiffness and strength to weight ratio. The most common failure mode of this high performance laminated material is delamination as a consequence of low velocity impact. Insufficient fracture toughness and delamination are the main issues affecting the long- term reliability of thermosetting matrix composites. Matrix-toughening seems to be one of the recommended methods in which interleaf layers of toughened materials are inserted into the middle plies of the composites. Generally thermoplastic .