Author Name(s):
Umar Farooq & Peter Myler
Abstract:
This work reports low-velocity impact-induced damage and energy absorption predictions of carbon fibre-reinforced laminated composite panels using analytical and data filtering techniques. Flat nose low-velocity impact of fibrous composite panels inflicts barely visible impact damage that could result in unexpected catastrophic failure that is a major concern to the aerospace industry. Extensive studies are being conducted to improve damage resistance and damage tolerance and energy absorption capabilities of the structures to prevent such failures. Previous studies on the topic revealed that load-deflection based approach works well for the onset of damage. However, flat nose impacts of relatively thick laminates produce level off load-deflection curves once certain displacement energy is reached. A very little information is available to extract serious damages from the levelled off loads. Thus, the analytical and data filtering approach was employed to quantify the energy absorbed by different mechanisms during flat and round nose impacts of 8- and 16-Ply laminates. Moreover, advanced data filtering techniques were applied to characterize load thresholds and absorbed energies from the levelled off curves. Comparisons of the results showed that the energy-based approach was more suitable for the determination of the initiation, propagation, accumulation, and extent of internal damage modes. The information could useful to be utilised at pre-design development and analysis.
Key words:
Fibre-reinforced composite panels, Low-velocity impact, Absorbed energy.
Please cite this article as:
Umar Farooq & Peter Myler (2021). Damage and energy absorption behaviour of low-velocity impacted fibre-reinforced composite panels using analytical and data filtering techniques. International Journal of Recent Research and Applied Studies, 8, 3(16), 87-106.
Leave a Reply