@inproceedings{9efad99561834f559d08706afbc93285,
title = "Repair of Damaged Fiber Reinforced Polymer Composites with Cold Spray",
abstract = "The promising structural properties of fiber-reinforced polymer composites make them widely popular in the energy, automotive, defense, and aerospace industries. One of the most challenging limitations associated with the use of composites in the above applications is the maintenance and repair protocols. In this study, a novel cold spray approach is introduced as an efficient alternative for the structural repair of fiber composites. Damages in the form of circular tapered holes are created in glass fiber-reinforced polymer (GFRP) composite substrates using a conventional drilling process. The in-lab created damages are repaired by cold spray with thermoplastic (nylon 6) and thermoset (polyester epoxy resin, PER) materials. The fundamental adhesion mechanisms are investigated through microstructural observations, which point to adiabatic shear instability due to the occurrence of severe plastic deformation as a governing factor. Microstructural examinations also suggest that no significant fiber damage or surface degradation occurs after the repair by cold spray. Mechanical tests performed on neat, damaged, and repaired composites reveal the partial recovery of structural performance and load-bearing capacity after cold spray repair. Results obtained in this work highlight cold spray as a promising alternative technique for onsite structural repair of composite structures with minimal pre/post-processing requirements.",
author = "Anni, \{Ibnaj Anamika\} and Kaminskyj, \{Madison S.\} and Uddin, \{Kazi Zahir\} and Haas, \{Francis M.\} and Behrad Koohbor and Stanzione, \{Joseph F.\}",
note = "Publisher Copyright: Copyright {\textcopyright} 2023 ASM International{\textregistered} All rights reserved.; 2023 International Thermal Spray Conference and Exposition, ITSC 2023 ; Conference date: 22-05-2023 Through 25-05-2023",
year = "2023",
doi = "10.31399/asm.cp.itsc2023p0741",
language = "English (US)",
series = "International Thermal Spray Conference and Exposition: Next-Generation Thermal Spraying for Future Surfaces, ITSC 2023 - Conference Proceedings",
publisher = "ASM International",
pages = "740--745",
editor = "Fardad Azarmi and X. Chen and J. Cizek and Jazi, \{H. Salimi\} and H. Koivuluoto and Y. Lau and R. Ortiz-Fernandez and Ozdemir, \{Ozan C.\} and F. Toma and J. Veilleux and H. Che",
booktitle = "International Thermal Spray Conference and Exposition",
address = "United States",
}