Issue 39

M. Romano et alii, Frattura ed Integrità Strutturale, 39 (2016) 226-247; DOI: 10.3221/IGF-ESIS.39.22 242 orientated yarns. This mechanism results in an increase of the thickness of the fabric instead of a decrease of the thickness. Geometric parameters of the ondulation Slope y M ~ in the kin , y  - x  -diagram Amplitude A Length of ondulation L Degree of ondulation O ~ CFRP one-sided elastically supported CFRP two-sided elastically supported 0.05 15.0 0.00333 -0.3180 -0.1588 0.05 12.5 0.00400 -0.4301 -0.2156 0.05 10.0 0.00500 -0.6451 -0.3260 0.10 15.0 0.00667 -0.5985 -0.2714 0.05 7.5 0.00667 -1.0954 -0.5525 0.10 12.5 0.00800 -0.8398 -0.3902 0.15 15.0 0.01000 -0.9322 -0.4124 0.10 10.0 0.01000 -1.2895 -0.6098 0.05 5.0 0.01000 -2.3964 -1.1946 0.15 12.5 0.01200 -1.3223 -0.6001 0.20 15.0 0.01333 -1.3044 -0.5711 0.10 7.5 0.01333 -2.2863 -1.1021 0.15 10.0 0.01500 -2.0499 -0.9564 0.20 12.5 0.01600 -1.8562 -0.8374 0.25 15.0 0.01667 -1.6981 -0.7333 0.25 12.5 0.02000 -2.4066 -1.1001 0.20 10.0 0.02000 -2.8025 -1.3188 0.15 7.5 0.02000 -3.4763 -1.7109 0.10 5.0 0.02000 -4.7204 -2.4144 0.25 10.0 0.02500 -3.4963 -1.6928 0.20 7.5 0.02667 -4.4191 -2.2506 0.15 5.0 0.03000 -6.0830 -3.3707 0.25 7.5 0.03333 -5.0427 -2.6973 0.20 5.0 0.04000 -6.4358 -3.8950 0.25 5.0 0.05000 -6.1304 -4.0234 Table 4 : Slopes in the kin , y  - x  -diagram y M ~ for the selected degrees of ondulation O ~ . -10 -8 -6 -4 -2 0 0,00 0,01 0,02 0,03 0,04 0,05 Leinwand CFK einseitig elastisch gebettet -10 -8 -6 -4 -2 0 0,00 0,01 0,02 0,03 0,04 0,05 Leinwand CFK beidseitig elastisch gebettet ~ ~ . . . . . . Degree of ondulation Õ = A / L . . . . . . Degree of ondulation Õ = A / L Slope M y in the ε y ,kin - ε x -diagram ~ Slope M y in the ε y ,kin - ε x -diagram ~ Plain weave fabric HT-carbon fiber reinf. EP one-sided elastically supported Plain weave fabric HT-carbon fiber reinf. EP one-sided elastically supported Figure 6 : Slopes in the kin , y  - x  -diagram y M ~ plotted over the selected degrees of ondulation O ~ .