1. Residual strength estimation of CFRP laminates subjected to impact at different velocities and temperatures
- Author
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Andrew J. Jefferson, R. Bhoominathan, Vellayaraj Arumugam, and Thompson Ashok
- Subjects
Materials science ,Polymers and Plastics ,02 engineering and technology ,General Chemistry ,Epoxy ,Composite laminates ,Fibre-reinforced plastic ,021001 nanoscience & nanotechnology ,Residual strength ,020303 mechanical engineering & transports ,0203 mechanical engineering ,Acoustic emission ,Flexural strength ,Energy absorbing ,Deflection (engineering) ,visual_art ,Materials Chemistry ,Ceramics and Composites ,visual_art.visual_art_medium ,Composite material ,0210 nano-technology - Abstract
This paper demonstrates the results of an experimental study on cross ply carbon/epoxy composite laminates fabricated from high temperature hardener HT972 subjected to impact loading at different velocities and temperatures. The carbon fiber reinforced plastic (CFRP) samples were impacted at velocities 1.5 m/s and 2.5 m/s, each at a temperature level of 30°C, 60°C, 90°C, and 120°C. The impact response of the material towards various velocities and temperatures was determined using impact parameters like peak force, absorbed energy, maximum deflection, and rebound velocity. Result reveals that the velocity and temperature play a significant role in the impact response of the material. The variation in the trend of Flexural After Impact (FAI) strength of composite laminates at different velocities and temperatures was determined using FAI test and these results were further correlated with impact results. The dominating failure modes affecting the residual strength of the samples were found using acoustic emission (AE) monitoring. POLYM. COMPOS., 2015. © 2015 Society of Plastics Engineers
- Published
- 2015