PSI - Issue 28

Marco Francesco Funari et al. / Procedia Structural Integrity 28 (2020) 1503–1510 Fun ri et al./ Structural Integ ity Procedia 00 (2019) 000 – 000

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Fig. 4 Divinycell H100 in-plane: strain maps obtained by DIC for different load levels (015, 0.30 and 0.45 MPa).

On the basis of the average strain along the X and Y direction, an elastic modulus equal to 141 MPa was obtained, whereas the Poisson coefficient is obtained as the ratio between the horizontal and the vertical strain. In this case, the data are quite in agreement with those declared by the producer datasheet with a percentage error of almost 5%. Divinycell H100 in-plane direction was analysed for three load level in the elastic range equal to 0.15, 0.30 and 0.45MPa, respectively. It is evident that the PVC foam H100 presents a reduced in-plane stiffness with a value of the elastic modulus and a Poisson coefficient equal to 56 MPa and 0.38, respectively. In this case, the experimental results are not comparable with those of the producer because they are not available. However, the results obtained in the present study are quite in agreement with those available by Wang et al. (2013). .

Fig. 5 Divinycell H130 thorough-the-thickness: Strain Maps obtained by DIC for different load levels (0.25, 0.50 and 0.75 MPa).