An Experimental and Numerical Study of Low Velocity Impact of Unsaturated Polyester/Glass Fibre Composite
Materials Science = Medžiagotyra 2011
Sanita Zīke, Kaspars Kalniņš, Kārlis Dzelzītis, Oļģerts Ozoliņš, Māris Knite

In this paper validation of experimental and numerical results of low-velocity impact tests of unsaturated polyester/glass fibre composite laminate has been carried out. Impact response of composite laminates was experimentally studied with drop-tower Instron 9250HV determining impact force, energy absorption and deflection. In addition, quasi-static testing equipment Zwick Z100 has been used to determine material mechanical properties to ensure good input data for numerical predictions. Numerical model has been created with the finite element commercial code LS-DYNA to simulate impact response of composite laminate. Also non-destructive ultrasonic C-scan imagining system USPC 3010 has been used to identify the deformation regions in the specimens and compare to simulation results. During impact test all samples were perforated, showing brittle response followed by matrix cracking and delamination. Overall good agreement between experimental and simulation results was achieved, comparing impact characterizing parameters as load, energy and deflection. Discrepancy has been observed between C-scan and simulation code LS-DYNA results of rupture and delamination. Simulation shows less uniform and larger deformation than it was experimentally observed.

Atslēgas vārdi
low velocity impact, plate impact, LS-DYNA, composite simulation, glass fibre composite, ultrasonic C-scan

Zīke, S., Kalniņš, K., Dzelzītis, K., Ozoliņš, O., Knite, M. An Experimental and Numerical Study of Low Velocity Impact of Unsaturated Polyester/Glass Fibre Composite. Materials Science = Medžiagotyra, 2011, Vol. 17, No. 4, 384.-390.lpp. ISSN 1392-1320. e-ISSN 2029-7289. Pieejams: doi:10.5755/

Publikācijas valoda
English (en)
RTU Zinātniskā bibliotēka.
E-pasts:; Tālr: +371 28399196