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has been cited by the following article:

• TITLE: Low Velocity Impact Response on GFRP and GF-SMP Panels in Structural and High Frequency Bands

  AUTHORS: R. Basavanna, S. Raja, Karisiddappa  

  KEYWORDS: Impact, Low Velocity, PZT Patches, GFRP, Composite Laminate, Transient Dynamics

  JOURNAL NAME: Advances in Aerospace Science and Technology, Vol.5 No.2, June 28, 2020

  ABSTRACT: A low velocity impact response study has been carried out on glass fibre composite laminates, made up of regular aircraft grade epoxy (GFRP) and shape memory polymer (GF-SMP). Under various impact loading intensities (4J, 6J, 12J), the responses are measured by a network of PZT (Lead Zirconate Titanate) sensors. A signal analysis methodology is subsequently developed to process the very high frequency (60 MHz) sampled data. In two frequency bands, namely 0 - 2000 Hz and 0 - 100 KHz, the results are examined and the transient dynamic behaviours of the composite laminates are evaluated. It is observed that both the laminates have generated the high frequency structural waves (0 - 100 KHz), which can be exploited to examine the BVID. However, GF-SMP laminate has shown some advantage in terms of energy dissipation in the structural frequency band (