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Publikācija: An Experimental and Numerical Study of Low Velocity Impact of Unsaturated Polyester/Glass Fibre Composite

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Nosaukums oriģinālvalodā An Experimental and Numerical Study of Low Velocity Impact of Unsaturated Polyester/Glass Fibre Composite
Pētniecības nozare 2. Inženierzinātnes un tehnoloģijas
Pētniecības apakšnozare 2.5. Materiālzinātne
Autori Sanita Zīke
Kaspars Kalniņš
Kārlis Dzelzītis
Olģerts Ozoliņš
Māris Knite
Atslēgas vārdi low velocity impact, plate impact, LS-DYNA, composite simulation, glass fibre composite, ultrasonic C-scan
Anotācija 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.
DOI: 10.5755/j01.ms.17.4.773
Hipersaite: http://internet.ktu.lt/lt/mokslas/zurnalai/medz/pdf/medz0-107/07%20Polymers...%28pp.384-390%29.pdf 
Atsauce 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. Material Science, 2011, Vol.17, Iss.4, 384.-390.lpp. e-ISSN 2029-7289. ISSN 1392-1320. Pieejams: doi:10.5755/j01.ms.17.4.773
ID 8684