Low Velocity Impact Analysis of Hybrid Kevlar/Glass Laminate Composites

Abstract:

This research paper investigates the impact of Kevlar fiber in Glass Fiber fiber-reinforced polymer (GFRP) composite laminates for aerospace applications. The study focuses on a hybrid combination of glass and Kevlar fibers developed through the Vacuum Bagging process. Low-velocity impact tests were conducted according to ASTM D7136 using a 12.7 mm hemispherical impactor at energy levels 10J and 20J with a constant mass of 4.1 kg. The study's objective is to explore the behavior of different impact scenarios resulting from symmetric stacking sequences, including damage mechanisms, peak force, displacement, and energy absorption. The influence of Kevlar on top, followed by Glass at the bottom and vice versa is studied for the different parameters. In conclusion, this study emphasizes the potential advantages of integrating Kevlar fibers into GFRP composite laminates for aerospace applications, enabling improved impact performance and facilitating the choice of appropriate configurations based on desired performance characteristics. The findings contribute to developing lightweight and robust materials for the aerospace industry, ensuring enhanced safety and efficiency for various applications.

• Periodical: Materials Science Forum (Volume 1149)
• Pages: 99-108
• DOI: https://doi.org/10.4028/p-arF94r
• Online since: May 2025
• Authors: Bangarpet Shankar Sridhar*, Babu L. Sunith, Jaya Christian
• Keywords: Cumulative Damage, Delamination, Impact Energy Distribution, Repeated Impact, Vacuum Bagging

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