Strain-Rate Sensitivity of a Pultruded E-Glass/Polyester Composite

Asprone, Domenico and Cadoni, Ezio and Prota, Andrea and Manfredi, Gaetano (2009) Strain-Rate Sensitivity of a Pultruded E-Glass/Polyester Composite. ASCE - Journal of Composites for Construction, 13 (6). pp. 558-564.

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Structural analysis of composite structures subjected to dynamic loads requires detailed knowledge of the mechanical behavior of component materials under high strain-rates. This paper presents the results of tests to investigate the tensile dynamic behavior of a pultruded E-glass/polyester composite used in a steel-less blast protection barrier. The described activity is part of the Security of Airport Structures research project, focusing on structural protection of airport infrastructures against disruptive action. Modified Hopkinson bars and hydropneumatic machine devices were used to conduct strain-rate controlled tensile failure tests on glass fiber-reinforced polymer specimens. The results are discussed and then implemented within a viscoplasticity constitutive model and a strain-rate-dependent failure criterion in order to simulate the exhibited mechanical behavior.

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