Author(s): Ramalho, Armando ; Gaspar, Marcelo ; Correia, Mário ; Vasco, Joel ; Capela, Carlos ; Rubén, Rui
Date: 2025
Persistent ID: http://hdl.handle.net/10400.11/10285
Origin: Repositório Científico do Instituto Politécnico de Castelo Branco
Subject(s): In-plane dynamic elastic properties; Impulse Excitation/Resonant technique; Halpin-Tsay model; GreenPoxy composite; E-glass fibers
In this article, the in-plane dynamic elastic properties of an E-glass randomly oriented fiber-reinforced SR GreenPoxy 56 composite were obtained based on the procedure specified in the ASTM E1876-21 standard. The experimental frequencies and the ones predicted by the simulation of the experimental procedure using a finite element analysis developed in the Patran/Nastran 2021 package were used in an iterative algorithm using sensitivity analysis to improve the first approaches of the dynamic elastic properties obtained by the impulse excitation technique. These experimental results are compared with the ones obtained by the 2D Short Fiber Composite model of the E-glass randomly oriented fiber-reinforced SR GreenPoxy 56 composite, developed in the Patran/Nastran 2021 software.
